{"id":40694,"date":"2016-01-04T16:57:24","date_gmt":"2016-01-04T21:57:24","guid":{"rendered":"https:\/\/www.nasa.gov\/?migration=converted-node-376761"},"modified":"2023-10-27T12:18:19","modified_gmt":"2023-10-27T16:18:19","slug":"transonic-dynamics-tunnel-tdt-facility","status":"publish","type":"topic","link":"https:\/\/www.nasa.gov\/directorates\/armd\/aetc\/transonic-dynamics-tunnel-tdt-facility\/","title":{"rendered":"Transonic Dynamics Tunnel (TDT) Facility"},"content":{"rendered":"<div id=\"\" class=\" hds-module hds-module-full wp-block-nasa-blocks-secondary-navigation\"><div class=\"hds-secondary-navigation-wrapper z-top width-100 padding-0\"><div id=\"\" class=\"hds-secondary-navigation width-full border-bottom-1px text-center hds-color-mode-light hds-module hds-module-full wp-block-nasa-blocks-hdsnav\"><button type=\"button\" class=\"hds-secondary-nav-mobile-button display-flex tablet:display-flex desktop:display-none width-full flex-align-center bg-carbon-90 border-color-carbon-80 color-spacesuit-white\" aria-expanded=\"false\" aria-controls=\"hds-secondary-nav-track\"><span>AETC Portfolio Office<\/span><svg width=\"16\" height=\"16\" alt=\"\" enable-background=\"new 0 0 400 400\" viewBox=\"0 0 400 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m4.2 122.2 195.1 195.1 196.5-196.6-37.9-38-157.8 157.8-156.8-156.8z\" \/><\/svg><\/button><div class=\"hds-secondary-nav-track grid-container grid-container-extrawide padding-0 tablet:padding-x-3 desktop:padding-x-2 hds-secondary-navigation-has-breadcrumbs\"><div class=\"hds-secondary-navigation-breadcrumbs display-none tablet:display-none desktop:display-flex flex-align-center\"><nav class=\"usa-breadcrumb\" aria-label=\"Breadcrumbs\"><ol class=\"usa-breadcrumb__list\"><li class=\"usa-breadcrumb__list-item\"><a href=\"https:\/\/www.nasa.gov\/\" class=\"usa-breadcrumb__link\"><span>Home<\/span><\/a><\/li><li class=\"usa-breadcrumb__list-item\"><a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/aetc\/\" class=\"usa-breadcrumb__link\"><span>Aerosciences Evaluation and...<\/span><\/a><\/li><li class=\"usa-breadcrumb__list-item usa-current\" aria-current=\"page\"><span>Transonic Dynamics Tunnel...<\/span><\/li><\/ol><\/nav><\/div><div class=\"hds-secondary-navigation-menu-items\"><nav><ul class=\"usa-nav__primary usa-accordion flex-justify-center margin-0\"><li class=\"usa-nav__primary-item \"><a class=\"usa-nav__link\" href=\"https:\/\/www.nasa.gov\/nasa-directorates\/armd\/aetc\/\">Aerosciences Evaluation and Test...<\/a><\/li><li class=\"usa-nav__primary-item\"><button type=\"button\" class=\"usa-accordion__button usa-nav__link\" aria-expanded=\"false\" aria-controls=\"basic-nav-section-one\"><span>Ground Facilities<\/span><svg class=\"hds-desktop-submenu-toggle-icon display-none tablet:display-none desktop:display-block\" width=\"16\" height=\"16\" alt=\"\" enable-background=\"new 0 0 400 400\" viewBox=\"0 0 400 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m4.2 122.2 195.1 195.1 196.5-196.6-37.9-38-157.8 157.8-156.8-156.8z\" \/><\/svg><svg class=\"hds-mobile-submenu-toggle-icon display-block tablet:display-block desktop:display-none\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"8\" cy=\"8\" r=\"7.5\" fill=\"#0B3D91\" stroke=\"white\"\/><rect x=\"4\" y=\"7.6001\" width=\"8\" height=\"0.8\" fill=\"white\"\/><rect class=\"hds-mobile-submenu-toggle-icon-line-vertical\" x=\"7.59998\" y=\"12\" width=\"8\" height=\"0.8\" transform=\"rotate(-90 7.59998 12)\" fill=\"white\"\/><\/svg><\/button><ul id=\"basic-nav-section-one\" class=\"usa-nav__submenu\" hidden><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aerosciences-evaluation-and-test-capabilities-aetc-portfolio-subsonic-facilities\/\">Subsonic Facilities<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aetc-transonic-facilities\/\">Transonic Facilities<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aerosciences-evaluation-and-test-capabilities-aetc-portfolio-supersonic-facilities\/\">Supersonic Facilities<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aerosciences-evaluation-and-test-capabilities-aetc-portfolio-hypersonic-facilities\/\">Hypersonic Facilities<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aerosciences-evaluation-and-test-capabilities-aetc-portfolio-propulsion-facility\/\">Propulsion Facilities<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aerosciences-evaluation-and-test-capabilities-aetc-portfolio-test-technology\/\">Test Technology<\/a><\/li><\/ul><\/li><li class=\"usa-nav__primary-item\"><button type=\"button\" class=\"usa-accordion__button usa-nav__link\" aria-expanded=\"false\" aria-controls=\"basic-nav-section-one\"><span>About<\/span><svg class=\"hds-desktop-submenu-toggle-icon display-none tablet:display-none desktop:display-block\" width=\"16\" height=\"16\" alt=\"\" enable-background=\"new 0 0 400 400\" viewBox=\"0 0 400 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m4.2 122.2 195.1 195.1 196.5-196.6-37.9-38-157.8 157.8-156.8-156.8z\" \/><\/svg><svg class=\"hds-mobile-submenu-toggle-icon display-block tablet:display-block desktop:display-none\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"8\" cy=\"8\" r=\"7.5\" fill=\"#0B3D91\" stroke=\"white\"\/><rect x=\"4\" y=\"7.6001\" width=\"8\" height=\"0.8\" fill=\"white\"\/><rect class=\"hds-mobile-submenu-toggle-icon-line-vertical\" x=\"7.59998\" y=\"12\" width=\"8\" height=\"0.8\" transform=\"rotate(-90 7.59998 12)\" fill=\"white\"\/><\/svg><\/button><ul id=\"basic-nav-section-one\" class=\"usa-nav__submenu\" hidden><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/directorates\/armd\/aeronautics-leadership\/\">Leadership and Team<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/contact-nasa\/\">Contact NASA<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div><div class=\"hds-secondary-navigation-menu-spacer\"> <\/div><\/div><\/div><\/div><\/div>\n\n<div id=\"\" class=\"nasa-gb-align-full maxw-full width-full padding-0 hds-module hds-module-full wp-block-nasa-blocks-page-intro\">\n\t<div class=\"padding-0 bg-spacesuit-white wp-block-nasa-blocks-page-intro\">\n\t\t\t\t\t<div class=\"padding-top-0\">\n\t\t\t\t<div class=\"grid-row\">\n\t\t\t\t\t\t\t\t\t<div class=\"grid-col-12 desktop:grid-col-6 padding-3 padding-bottom-0 desktop:padding-3\">\n\t\t\t\t\t\t<div class=\"padding-0 display-flex flex-align-end flex-justify-end \">\n\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper hds-page-intro-image-1\">\n\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"Half of a yellow model of a semi-span fighter model being tested in the Transonic Dynamics Tunnel.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg 4500w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1024,683 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1536,1024 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=2048,1365 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=900,600 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1200,800 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=2000,1333 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" loading=\"eager\" \/><\/figure>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"grid-col-6 desktop:grid-col-3 padding-top-2 padding-bottom-2 padding-left-3 padding-right-1 desktop:padding-3 desktop:padding-left-0\">\n\t\t\t\t\t\t<div class=\"padding-0 display-flex flex-align-end flex-justify-end\">\n\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper hds-page-intro-image-2\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"Researchers recently tested rotors for the Dragonfly spacecraft that will explore Saturn's moon Titan at NASA Langley's Transonic Dynamics Tunnel.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg 3000w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=1024,683 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=1536,1024 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=2048,1365 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=900,600 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=1200,800 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/12\/lrc-2022-b701_p-03161.jpg?resize=2000,1333 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"grid-col-6 desktop:grid-col-3 padding-top-2 padding-bottom-2 padding-left-1 padding-right-3 desktop:padding-3 desktop:padding-left-0\">\n\t\t\t\t\t\t<div class=\"padding-0 display-flex flex-align-end flex-justify-end\">\n\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper hds-page-intro-image-3\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"The aerodynamics team at NASA Langley tests a model of the 70-metric-ton Space Launch System\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls03.jpg?resize=900,675 900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"grid-row grid-container grid-container-block padding-top-0 padding-bottom-8\">\n\t\t\t\t\t\t<h1 class=\"page-heading-md display-block width-full margin-bottom-1\">Transonic Dynamics Tunnel (TDT) Facility<\/h1>\n\t\t\t\t\t<div class=\"grid-col-12 desktop:grid-col-7 padding-right-0 desktop:padding-right-6 padding-bottom-5 desktop:padding-bottom-0\">\n\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t<p class=\"p-lg margin-0 padding-0\">The Transonic Dynamics Tunnel (TDT) is a closed-circuit, continuous flow, variable pressure wind tunnel. The TDT is dedicated to identifying and solving aeroelasticity issues confronting fixed-wing aircraft and helicopter and tiltrotor configurations.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/transonic-dynamics-tunnel-tdt-facility-description\/\" target=\"_self\" class=\"button-primary link-external-true\">\n\t\t\t\t\t\t\t<span class=\"section-heading-md\">\n                                Learn More About the Transonic Dynamics Tunnel  <span class=\"usa-sr-only\">about Transonic Dynamics Tunnel (TDT) Facility<\/span>                            <\/span>\n\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\n<div id=\"\" class=\"hds-card-grid padding-top-7 padding-bottom-3 padding-x-0 hds-module hds-module-full wp-block-nasa-blocks-card-grid\">\t\t\t<div class=\"hds-card-grid-header grid-container grid-container-block\">\n\t\t\t\t<div class=\"grid-row flex-align-start margin-bottom-5\">\n\t\t\t\t\t<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n\t\t\t\t\t\t<div class=\"margin-bottom-1\">\n\t\t\t\t\t\t\t<h2 class=\"section-heading-sm line-height-sm\">Focus Areas and Capabilities<\/h2>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"margin-0 padding-0\">Learn more about the specifications and capabilities of this facility.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"desktop:grid-col display-flex flex-align-center desktop:flex-justify-end\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"grid-row grid-gap-2\"><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"hds-card-grid-cards grid-container grid-container-block\">\n\t\t\t\t<div class=\"hds-cards-included grid-row\">\n\t\t\t\t\t<div class=\"hds-card-custom hds-card color-carbon-black display-flex flex-column margin-bottom-5 mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-4 margin-bottom-6\"><div class=\"hds-card-inner\"><div class=\"hds-card-thumbnail hds-card-hover-zoom-image margin-bottom-2 bg-carbon-black\"><figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"A Space Launch System wind tunnel model undergoes speeds just below supersonic.\" style=\"transform: scale(1); transform-origin: 47% 21%; object-position: 47% 21%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg 3000w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1536,1152 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=2048,1536 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1200,900 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=2000,1500 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><div class=\"padding-right-0\"><div class=\"margin-bottom-1\"><h3 class=\"heading-18\">Characteristics<\/h3><\/div><p class=\"margin-top-0 line-height-lg\">The Transonic Dynamics Tunnel (TDT) is a closed-circuit, continuous-flow, variable-pressure wind tunnel capable of using either air or R-134a as a test medium.<\/p><div class=\"margin-top-2\"><a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/transonic-dynamics-tunnel-tdt-characteristics\/\" target=\"_self\" class=\"button-primary button-primary-md link-external-0\"><span role=\"textbox\" aria-multiline=\"true\" aria-label=\"Write button text here\" class=\"line-height-alt-1\" style=\"white-space: pre-wrap; min-width: 1px;\">Read More on Characteristics<\/span><svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><\/a><\/div><\/div><\/div><\/div><div class=\"hds-card-custom hds-card color-carbon-black display-flex flex-column margin-bottom-5 mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-4 margin-bottom-6\"><div class=\"hds-card-inner\"><div class=\"hds-card-thumbnail hds-card-hover-zoom-image margin-bottom-2 bg-carbon-black\"><figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?w=683\" class=\"attachment-large size-large\" alt=\"SLS Model 'Flies' Through Langley Wind Tunnel Testing\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=200,300 200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=768,1152 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=683,1024 683w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=1024,1536 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=267,400 267w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=400,600 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=600,900 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=800,1200 800w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/><\/figure><\/div><div class=\"padding-right-0\"><div class=\"margin-bottom-1\"><h3 class=\"heading-18\">Quick Facts<\/h3><\/div><p class=\"margin-top-0 line-height-lg\">Rotary-wing tests at the TDT have investigated performance, loads, and stability characteristics, while fixed-wing flutter, buffet, and divergence have been scrutinized as well.<\/p><div class=\"margin-top-2\"><a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/transonic-dynamics-tunnel-tdt-quick-facts\/\" target=\"_self\" class=\"button-primary button-primary-md link-external-0\"><span role=\"textbox\" aria-multiline=\"true\" aria-label=\"Write button text here\" class=\"line-height-alt-1\" style=\"white-space: pre-wrap; min-width: 1px;\">Read More on Quick Facts<\/span><svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><\/a><\/div><\/div><\/div><\/div><div class=\"hds-card-custom hds-card color-carbon-black display-flex flex-column margin-bottom-5 mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-4 margin-bottom-6\"><div class=\"hds-card-inner\"><div class=\"hds-card-thumbnail hds-card-hover-zoom-image margin-bottom-2 bg-carbon-black\"><figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"816\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"Rotocraft model on test stand in the Transonic Dynamics Tunnel.\" style=\"transform: scale(1); transform-origin: 91% 29%; object-position: 91% 29%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=300,239 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=768,612 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=1024,816 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=400,319 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=600,478 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=900,718 900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><div class=\"padding-right-0\"><div class=\"margin-bottom-1\"><h3 class=\"heading-18\">Data Acquisition<\/h3><\/div><p class=\"margin-top-0 line-height-lg\">Particularly useful for flutter tests is a group of four bypass valves that connect the TDT test section area to the opposite leg of the wind tunnel circuit downstream of the fan motor.<\/p><div class=\"margin-top-2\"><a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/transonic-dynamics-tunnel-tdt-data-acquisition\/\" target=\"_self\" class=\"button-primary button-primary-md link-external-0\"><span role=\"textbox\" aria-multiline=\"true\" aria-label=\"Write button text here\" class=\"line-height-alt-1\" style=\"white-space: pre-wrap; min-width: 1px;\">Read More on Data Acquisition<\/span><svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><\/a><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t<\/div>\n\n<div id=\"\" class=\"hds-gallery-preview padding-y-5 desktop:padding-y-7 padding-x-3 bg-spacesuit-white width-full maxw-full hds-gallery-preview-count-10 hds-module hds-module-full wp-block-nasa-blocks-gallery-preview\">\t<div class=\"grid-container grid-container-widescreen padding-x-0\">\n\t\t<div class=\"grid-row width-full\">\n\t\t\t<div class=\"grid-col-12 desktop:grid-col-8\">\n\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t<h2 class=\"heading-22\">Transonic Dynamics Tunnel (TDT) Gallery<\/h2>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"display-flex flex-wrap flex-align-center margin-bottom-1\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"display-flex flex-align-center label hds-gallery-preview-label z-400 color-carbon-60 margin-right-3 margin-bottom-1\">\n\t\t\t\t\t\t<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"20px\" height=\"20px\" viewBox=\"0 0 20 20\" style=\"enable-background:new 0 0 20 20;\" xml:space=\"preserve\"><g><path style=\"fill:#585858;\" d=\"M10,0C4.5,0-0.1,4.5,0,10.1c0.1,5.4,4.5,9.9,10.1,9.9c5.5-0.1,10-4.6,9.9-10.1C19.9,4.4,15.4,0,10,0z M10.3,19 C5.1,19.1,1,15,1,10c0-5,4-9,9-9c4.9,0,8.9,3.9,9,8.9C19.1,14.9,15.1,18.9,10.3,19z\"\/><path style=\"fill:#585858;\" d=\"M14,9c-0.8,1.2-1.5,2.5-2.3,3.7C10.5,10.5,9.2,8.2,8,6c-1.5,2.7-3,5.3-4.5,8c4.5,0,9,0,13.5,0 C16,12.3,15,10.7,14,9z\"\/><path style=\"fill:#585858;\" d=\"M13,8c1.1,0,2-0.9,2-2c0-1.1-0.9-2-2-2c-1.1,0-2,0.9-2,2C11,7,11.8,8,13,8z\"\/><\/g><\/svg>\n\t\t\t\t\t\t<span>10 Images<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<div class=\"desktop:grid-col-4 display-none padding-bottom-2 desktop:display-flex flex-align-start flex-justify-end\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/gallery\/transonic-dynamics-tunnel-tdt-gallery\/\" class=\"button-primary margin-bottom-3\">\n\t\t\t\t\t\t<span class=\"section-heading-md\">Go To Gallery<\/span>\n\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"hds-gallery-preview-images grid-container grid-container-widescreen padding-x-0\">\n\t\t<div class=\"hds-gallery-preview-row hds-gallery-preview-row-lg\">\n\t\t\t<div class=\"hds-gallery-preview-col hds-gallery-preview-flex-two hds-gallery-preview-items hds-gallery-preview-grid\">\n\t\t\t\t<div class=\"hds-gallery-preview-row hds-gallery-preview-row-1-1\">\n\t\t\t\t\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"239\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=300,239 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=768,612 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=1024,816 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=400,319 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=600,478 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-rotorcraft-model.jpg?resize=900,718 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t\t\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=300,240 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=768,614 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=1024,818 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=400,320 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=600,480 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-scale-model-prop-fan.jpg?resize=900,719 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"hds-gallery-preview-row hds-gallery-preview-row-1-2\">\n\t\t\t\t\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"247\" height=\"300\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?w=247\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=247,300 247w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=768,933 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=843,1024 843w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=329,400 329w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=494,600 494w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=741,900 741w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-nasp-in-tdt.jpg?resize=988,1200 988w\" sizes=\"(max-width: 247px) 100vw, 247px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t\t\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"246\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=300,246 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=768,629 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=1024,839 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=400,328 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=600,492 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-cessna-citation-x.jpg?resize=900,737 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"hds-gallery-preview-col hds-gallery-preview-flex-three hds-gallery-preview-items\">\n\t\t\t\t\t<div class=\"hds-gallery-preview-item hds-gallery-preview-item-featured\">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"806\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=300,236 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=768,604 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=1024,806 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=400,315 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=600,472 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=900,708 900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"hds-gallery-preview-row hds-gallery-preview-row-2 hds-gallery-preview-row-sm\">\n\t\t\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg 3000w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1536,1152 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=2048,1536 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=1200,900 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2017\/01\/lrc-2016-h1_p_slstesting-111808.jpg?resize=2000,1500 2000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg 4500w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1024,683 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1536,1024 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=2048,1365 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=900,600 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=1200,800 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/tdt-semi-span-fighter-model.jpg?resize=2000,1333 2000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg 4806w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=1536,1152 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=2048,1536 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=1200,900 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/10\/sls_4_copyjpeg2smaller.jpg?resize=2000,1500 2000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/2014-l-boeing_cst-100_2.jpg?resize=900,675 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"hds-gallery-preview-item \">\n\t\t<div class=\"hds-cover-wrapper width-full height-full\">\n\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"300\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?w=200\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=200,300 200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=768,1152 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=683,1024 683w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=1024,1536 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=267,400 267w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=400,600 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=600,900 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/sls-buffet-model_full.jpg?resize=800,1200 800w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/figure>\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"desktop:grid-col-12 display-block desktop:display-none\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/gallery\/transonic-dynamics-tunnel-tdt-gallery\/\" class=\"button-primary margin-top-3\">\n\t\t\t\t\t<span class=\"section-heading-md\">Go To Gallery<\/span>\n\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<\/div>\n\n\n<h2 class=\"wp-block-heading\">Contact Information<\/h2>\n\n\n\n<p><b><strong>Transonic Dynamics Tunnel<\/strong><\/b><\/p>\n\n\n\n<p>Contact: Tony Olszewski (757) 864-7862<\/p>\n\n\n\n<p><strong><a href=\"\/ames-research-center\/\"><\/a><a href=\"https:\/\/www.nasa.gov\/centers\/ames\/home\/index.html\"><b>NASA Langley Research Center<\/b><\/a><br><\/strong>Hampton, VA 23681<br>(757) 864-1000<\/p>\n\n\n<div id=\"\" class=\"hds-tabbed-section color-mode-light padding-y-6 padding-x-3 hds-module hds-module-full wp-block-nasa-blocks-tabbed-section\"> \n\t<div class=\"grid-container grid-container-block\">\n\t\t<ul class=\"hds-tab-nav usa-list usa-list--unstyled grid-row\" role=\"tablist\">\n\t\t\t\t\t\t<li role=\"presentation\" class=\"hds-tab-nav-item usa-active\" data-tab-id=\"0\">\n\t\t\t\t<button role=\"tab\" type=\"button\" id=\"tab0-fact-sheet\" aria-selected=\"true\" aria-controls=\"panel0-fact-sheet\">\n\t\t\t\t\tFact Sheet\t\t\t\t<\/button>\n\t\t\t<\/li>\n\t\t\t\t\t\t<li role=\"presentation\" class=\"hds-tab-nav-item \" data-tab-id=\"1\">\n\t\t\t\t<button role=\"tab\" type=\"button\" id=\"tab1-aetc-transonic-facilities\" aria-selected=\"false\" aria-controls=\"panel1-aetc-transonic-facilities\">\n\t\t\t\t\tAETC Transonic Facilities\t\t\t\t<\/button>\n\t\t\t<\/li>\n\t\t\t\t\t\t<li role=\"presentation\" class=\"hds-tab-nav-item \" data-tab-id=\"2\">\n\t\t\t\t<button role=\"tab\" type=\"button\" id=\"tab2-aetc-ground-facilities\" aria-selected=\"false\" aria-controls=\"panel2-aetc-ground-facilities\">\n\t\t\t\t\tAETC Ground Facilities\t\t\t\t<\/button>\n\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\t\t\t\t\t<div class=\"hds-tabbed-section-tabs margin-top-6\">\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-tab desktop:display-flex usa-active\" data-tab-id=\"0\" role=\"tabpanel\" id=\"panel0-fact-sheet\" aria-labelledby=\"tab0-fact-sheet\" >\n\t\t\t\t\t\t<div class=\"grid-col desktop:padding-right-5 padding-bottom-4 desktop:padding-bottom-0\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"heading-29\">Fact Sheet<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"heading-16\">The Transonic Dynamics Tunnel (TDT) is a closed-circuit, continuous-flow, variable-pressure wind tunnel capable of using either air or R-134a as a test medium.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"p-md\">The TDT is dedicated to identifying, understanding, and solving aeroelastic issues confronting fixed-wing aircraft, helicopter, and tiltrotor configurations. Rotary-wing tests at the TDT have investigated performance, loads, and stability characteristics, while fixed-wing flutter, buffet, and divergence have been scrutinized as well.<\/p>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2016\/01\/m187008_tdtprint_508.pdf?emrc=122589\" target=\"_self\" class=\"button-primary button-primary-sm link-external-true\">\n\t\t\t<span class=\"line-height-alt-1 \" >\n\t\t\t\tRead the Transonic Dynamics Tunnel Fact Sheet                \t\t\t<\/span>\n\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"grid-col desktop:padding-left-5\">\n\t\t\t\t\t\t\t\t<div class=\"display-block\">\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-image margin-bottom-2 minh-mobile\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"806\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"F\/A-18 E\/F flutter clearance model in the Transonic Dynamics Tunnel.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=300,236 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=768,604 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=1024,806 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=400,315 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=600,472 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/tdt-fa-18-ef.jpg?resize=900,708 900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Rotocraft model on test stand in the Transonic Dynamics Tunnel.<\/div><\/figcaption><\/div>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-tab desktop:display-flex \" data-tab-id=\"1\" role=\"tabpanel\" id=\"panel1-aetc-transonic-facilities\" aria-labelledby=\"tab1-aetc-transonic-facilities\" hidden>\n\t\t\t\t\t\t<div class=\"grid-col desktop:padding-right-5 padding-bottom-4 desktop:padding-bottom-0\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"heading-29\">AETC Transonic Facilities<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"p-md\">NASA operates three Transonic Facilities. The National Transonic Facility, 11-Foot Transonic Unitary Plan Facility and the Transonic Dynamics Tunnel<\/p>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/aetc-transonic-facilities\/\" target=\"_self\" class=\"button-primary button-primary-sm link-external-true\">\n\t\t\t<span class=\"line-height-alt-1 \" >\n\t\t\t\tLearn More About AETC Transonic Facilities                \t\t\t<\/span>\n\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"grid-col desktop:padding-left-5\">\n\t\t\t\t\t\t\t\t<div class=\"display-block\">\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-image margin-bottom-2 minh-mobile\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"Facility Aerodynamics Validation and Operational Research model in wind tunnel\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=300,176 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=768,452 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=1024,602 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=400,235 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=600,353 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/process-improvement-gallery4.jpg?resize=900,529 900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">The Facility Aerodynamics Validation and Operational Research (FAVOR) model, mounted in the Ames Research Center 11- by 11-Foot Unitary Plan Transonic Wind Tunnel.<\/div><div class=\"hds-credits\">NASA<\/div><\/figcaption><\/div>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-tab desktop:display-flex \" data-tab-id=\"2\" role=\"tabpanel\" id=\"panel2-aetc-ground-facilities\" aria-labelledby=\"tab2-aetc-ground-facilities\" hidden>\n\t\t\t\t\t\t<div class=\"grid-col desktop:padding-right-5 padding-bottom-4 desktop:padding-bottom-0\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"heading-29\">AETC Ground Facilities<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"heading-16\">AETC sets the strategic direction for NASA’s versatile and comprehensive portfolio of ground test aeronautics research capabilities.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"p-md\">Among these assets are subsonic, transonic, supersonic, and hypersonic wind tunnels and propulsion test facilities at Ames Research Center, Glenn Research Center, and Langley Research Center.<\/p>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/about-aetc-ground-facilities\/\" target=\"_self\" class=\"button-primary button-primary-sm link-external-true\">\n\t\t\t<span class=\"line-height-alt-1 \" >\n\t\t\t\tLearn More About AETC Ground Facilities                \t\t\t<\/span>\n\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"grid-col desktop:padding-left-5\">\n\t\t\t\t\t\t\t\t<div class=\"display-block\">\n\t\t\t\t\t\t\t\t\t<div class=\"hds-tabbed-section-image margin-bottom-2 minh-mobile\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?w=1024\" class=\"attachment-large size-large\" alt=\"NASA Ames Research Center aerial from the NFAC 80-by-120-foot wind tunnel inlet vanes N221B with Power Substation North N225B, Office Trailers TR35A, TR35, and TR35C in forground looking west across center. The image was taken by Jonas Jonsson and Zachary Roberts, General Engineers with the Ames Aeronautics Projects Office, during a drone flight over the center.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg 4600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=1536,1151 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=2048,1535 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=1200,899 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/05\/acd20-0075-003.jpg?resize=2000,1499 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">NASA Ames Research Center aerial from the NFAC 80-by-120-foot wind tunnel inlet vanes N221B with Power Substation North N225B, Office Trailers TR35A, TR35, and TR35C in forground looking west across center. 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href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/14-by-22-foot-subsonic-tunnel-data-acquisition\/\" class=\"color-carbon-black\">\n\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper cover-hover-zoom bg-carbon-black minh-mobile\">\n\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg 1776w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=1536,1152 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2015\/02\/noise_reduction_model_14x22.jpg?resize=1200,900 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"padding-right-0 desktop:padding-right-10\">\n\t\t\t\t\t\t\t\t<div class=\"subheading margin-bottom-1\">1 min read<\/div>\n\t\t\t\t\t\t\t\t<div class=\"margin-bottom-1\"><h3 class=\"related-article-title\">14- by 22-Foot Subsonic Tunnel Data Acquisition<\/h3><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"display-flex flex-align-center label related-article-label margin-bottom-1 color-carbon-60\">\n\t\t\t\t\t\t\t\t\t<span class=\"display-flex flex-align-center margin-right-2\">\n\t\t\t\t\t\t\t\t\t\t<svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg>\n\t\t\t\t\t\t\t\t\t\t<span>Article<\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"\">\n\t\t\t\t\t\t\t\t\t\t1 year ago\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"grid-col-12 desktop:grid-col-4 margin-bottom-4 desktop:margin-bottom-0 desktop:padding-right-3\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/14-by-22-foot-subsonic-tunnel-quick-facts\/\" class=\"color-carbon-black\">\n\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper cover-hover-zoom bg-carbon-black minh-mobile\">\n\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg 4000w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=300,240 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=768,614 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=1024,819 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=1536,1229 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=2048,1638 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=400,320 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=600,480 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=900,720 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=1200,960 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2019\/04\/madcat_tunnel.jpg?resize=2000,1600 2000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"padding-right-0 desktop:padding-right-10\">\n\t\t\t\t\t\t\t\t<div class=\"subheading margin-bottom-1\">1 min read<\/div>\n\t\t\t\t\t\t\t\t<div class=\"margin-bottom-1\"><h3 class=\"related-article-title\">14- by 22-Foot Subsonic Tunnel Quick Facts<\/h3><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"display-flex flex-align-center label related-article-label margin-bottom-1 color-carbon-60\">\n\t\t\t\t\t\t\t\t\t<span class=\"display-flex flex-align-center margin-right-2\">\n\t\t\t\t\t\t\t\t\t\t<svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg>\n\t\t\t\t\t\t\t\t\t\t<span>Article<\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"\">\n\t\t\t\t\t\t\t\t\t\t1 year ago\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"grid-col-12 desktop:grid-col-4 margin-bottom-4 desktop:margin-bottom-0 desktop:padding-right-3\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/directorates\/armd\/armd-aetc\/14-by-22-foot-subsonic-tunnel-characteristics\/\" class=\"color-carbon-black\">\n\t\t\t\t\t\t\t<div class=\"margin-bottom-2\">\n\t\t\t\t\t\t\t\t<div class=\"hds-cover-wrapper cover-hover-zoom bg-carbon-black minh-mobile\">\n\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/lrc-2017-h1_p_sls-040403_0.jpg?resize=900,675 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"padding-right-0 desktop:padding-right-10\">\n\t\t\t\t\t\t\t\t<div class=\"subheading margin-bottom-1\">1 min read<\/div>\n\t\t\t\t\t\t\t\t<div class=\"margin-bottom-1\"><h3 class=\"related-article-title\">14- by 22-Foot Subsonic Tunnel Characteristics<\/h3><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"display-flex flex-align-center label related-article-label margin-bottom-1 color-carbon-60\">\n\t\t\t\t\t\t\t\t\t<span class=\"display-flex flex-align-center margin-right-2\">\n\t\t\t\t\t\t\t\t\t\t<svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg>\n\t\t\t\t\t\t\t\t\t\t<span>Article<\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"\">\n\t\t\t\t\t\t\t\t\t\t1 year ago\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<\/div>\n\n<div id=\"\" class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full wp-block-nasa-blocks-topic-cards\">\t\t<div class=\"grid-container grid-container-block-lg padding-x-0\">\n\t\t\t<div class=\"grid-row flex-align-center margin-bottom-3\">\n\t\t\t\t<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n\t\t\t\t\t<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n\t\t\t\t\t<h2 class=\"heading-36 line-height-sm\">Discover More Topics From NASA<\/h2>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/nasa-missions\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\">\n\t\t\t\t<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n\t\t\t\t\t<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Missions<\/span>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"864\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?w=1536\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg 3840w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=300,169 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=768,432 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=1024,576 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=1536,864 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=2048,1152 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=400,225 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=600,338 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=900,506 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=1200,675 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2022\/08\/jsc2022e046413_orig.jpg?resize=2000,1125 2000w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/humans-in-space\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\">\n\t\t\t\t<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n\t\t\t\t\t<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Humans In Space<\/span>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"368\" height=\"560\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2021\/03\/topic-humans-in-space.jpg?w=368\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2021\/03\/topic-humans-in-space.jpg 368w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2021\/03\/topic-humans-in-space.jpg?resize=197,300 197w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2021\/03\/topic-humans-in-space.jpg?resize=263,400 263w\" sizes=\"(max-width: 368px) 100vw, 368px\" \/><\/figure>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/solar-system\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\">\n\t\t\t\t<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n\t\t\t\t\t<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Solar System Exploration<\/span>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Why Oceans Matter The story of oceans is the story of life. Life as we know it requires three ingredients:...<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img decoding=\"async\" loading=\"lazy\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/07\/pia06890-our-solar-system-banner-1920x640-1.jpg\" ><\/figure>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t\t\t\t<a href=\"https:\/\/www.nasa.gov\/history\/explore-nasas-history\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\">\n\t\t\t\t<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n\t\t\t\t\t<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Explore NASA’s History<\/span>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"1878\" src=\"https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=1919&h=1878&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=1919&h=1878&fit=crop&crop=faces%2Cfocalpoint 1919w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=300&h=294&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=768&h=752&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=1024&h=1002&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=1536&h=1503&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=50&h=49&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/images-assets.nasa.gov\/image\/as17-134-20476\/as17-134-20476~large.jpg?w=400&h=391&fit=crop&crop=faces%2Cfocalpoint 400w, 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864-1000<\/p>\n","protected":false},"author":48,"featured_media":36271,"parent":203236,"menu_order":0,"template":"","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"48","nasa_hds_core_meta_article_contacts":["47"],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[]},"categories":[10542],"news-tags":[],"internal-terms":[10616,10831],"coauthors":[8594],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"WebPage","headline":"Transonic Dynamics Tunnel (TDT) 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