{"id":604478,"date":"2024-02-06T09:59:14","date_gmt":"2024-02-06T14:59:14","guid":{"rendered":"https:\/\/www.nasa.gov\/?p=604478"},"modified":"2024-03-18T10:07:01","modified_gmt":"2024-03-18T14:07:01","slug":"nasa-tests-new-spacecraft-propellant-gauge-on-lunar-lander","status":"publish","type":"post","link":"https:\/\/www.nasa.gov\/centers-and-facilities\/glenn\/nasa-tests-new-spacecraft-propellant-gauge-on-lunar-lander\/","title":{"rendered":"NASA Tests New Spacecraft Propellant Gauge on Lunar Lander"},"content":{"rendered":"\n<p><\/p>\n\n\n<div id=\"\" class=\"padding-top-5 padding-bottom-3 width-full maxw-full hds-module hds-module-full wp-block-nasa-blocks-article-intro\"><div class=\"width-full maxw-full article-header\"><div class=\"margin-bottom-2 width-full maxw-full\"><p class=\"label carbon-60 margin-0 margin-bottom-3 padding-0\">3 min read<\/p><h1 class=\"display-48 margin-bottom-2\">NASA Tests New Spacecraft Propellant Gauge on Lunar Lander<\/h1><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"2048\" height=\"1365\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?w=2048\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 11% 12%; object-position: 11% 12%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg 3000w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=1024,683 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=1536,1024 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=2048,1365 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=900,600 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=1200,800 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4.jpg?resize=2000,1333 2000w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" loading=\"eager\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">The Intuitive Machines Nova-C lander for the company’s first Commercial Lunar Payload Services delivery is positioned before being encapsulated inside its launch fairing. The Nova-C lander will launch from NASA’s Kennedy Space Center aboard a SpaceX Falcon 9 rocket no earlier than mid-February.<\/div><div class=\"hds-credits\"><strong>Credit: Intuitive Machines<\/strong><\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p><strong>Editor’s note, Feb. 6, 2024: <\/strong><em>This article has been updated to clarify that the Radio Frequency Mass Gauge estimates how much propellant is available in a tank. It does not make an exact measurement.<\/em><\/p>\n\n\n\n<p>It\u2019s easy to measure fuel in tanks on Earth, where gravity pulls the liquid to the bottom. But in space, the game changes. Quantifying fuel that\u2019s floating around inside a spacecraft\u2019s tank isn\u2019t so simple.<\/p>\n\n\n\n<p>\u201cBecause of the very small amount of gravity, fluid doesn\u2019t settle to the bottom of propellant tanks but rather clings to the walls and could be anywhere inside,\u201d said Lauren Ameen, deputy manager for the Cryogenic Fluid Management Portfolio Project Office at NASA\u2019s Glenn Research Center in Cleveland. \u201cThat makes it really challenging to understand how much propellant you have within your tank, which is really important to maximize your mission duration and plan how much you need to launch with.\u201d<\/p>\n\n\n\n<p>A space-age fuel gauge technology meant to solve this problem will be demonstrated on an upcoming journey to the Moon. Developed at NASA Glenn under the agency\u2019s Technology Demonstration Missions program, the Radio Frequency Mass Gauge (RFMG) payload is set to launch as a part of the Intuitive Machines IM-1 delivery to the lunar surface through the <a href=\"https:\/\/www.nasa.gov\/commercial-lunar-payload-services\/\">Commercial Lunar Payload Services (CLPS) initiative<\/a>. With CLPS, NASA is working with American companies to deliver scientific, exploration, and technology payloads to the Moon\u2019s surface and orbit.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"NASA Tests New Spacecraft Propellant Gauge on Lunar Lander\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/OdB_i74H3dc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-left\"><em>Dr. Greg Zimmerli, principal investigator for the Radio Frequency Mass Gauge (RFMG) project at NASA\u2019s Glenn Research Center in Cleveland, explains how RFMG technology will help pave the way for future space missions.<\/em><\/p>\n\n\n\n<p><strong>Credit: NASA\/Denise Eletich<\/strong> <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>RFMG technology uses radio waves and antennae in a tank to measure how much propellant is available. While smaller-scale experiments have been conducted on the International Space Station and during <a href=\"https:\/\/flightopportunities.ndc.nasa.gov\/technologies\/7\/\" rel=\"noopener\">parabolic flights<\/a>, this will be the first long-duration RFMG testing on a standalone spacecraft, the Nova-C lunar lander. The data engineers receive throughout its journey could validate simulations done on the ground and mark the next step in developing this technology.<\/p>\n\n\n\n<p>\u201cIt\u2019s definitely a critical point,\u201d Ameen said. \u201cThis is the first time we\u2019re getting this type of data for RFMG.\u201d<\/p>\n\n\n\n<p>RFMG could be crucial during future long-duration missions that will rely on spacecraft fueled by <a href=\"https:\/\/www.nasa.gov\/centers-and-facilities\/glenn\/brr-its-cold-in-here-nasas-cryo-efforts-beyond-the-atmosphere\/\">cryogenic propellants<\/a>, like liquid hydrogen, liquid oxygen, or liquid methane. These propellants are highly efficient but are tricky to store as they can evaporate quickly, even at low temperatures. Being able to accurately measure spacecraft fuel levels will help scientists maximize resources as NASA moves toward its goal of returning humans to the Moon through <a href=\"https:\/\/www.nasa.gov\/specials\/artemis\/\">Artemis<\/a>.<\/p>\n\n\n<div id=\"\" class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 hds-module hds-module-full wp-block-nasa-blocks-related-articles\">\t\t<section class=\"hds-related-articles padding-x-0 padding-y-3 desktop:padding-top-7 desktop:padding-bottom-9\">\n\t\t\t<div class=\"w-100 grid-row grid-container maxw-widescreen padding-0 text-align-left\">\n\t\t\t\t<div class=\"margin-bottom-4\"><h2 style=\"max-width: 100%;\" class=\"width-full w-full maxw-full\">Explore More<\/h2><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n\t\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\/newsletters\/aerospace-frontiers\/nasa-glenn-visits-duluth-for-air-and-aviation-expo-steam-festival\/\" 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\/2024\/06\/grc-2024-cn-00014.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\/2024\/06\/grc-2024-cn-00014.jpg 4032w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=300,225 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=768,576 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=1024,768 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=1536,1152 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=2048,1536 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=400,300 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=600,450 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=900,675 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=1200,900 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00014.jpg?resize=2000,1500 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\">NASA Glenn Visits Duluth for Air and Aviation Expo, STEAM Festival\u00a0\u00a0<\/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\t4 days 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\/centers-and-facilities\/glenn\/tech-day-at-nasa-attracts-middle-school-students\/\" 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=\"200\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.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\/2024\/06\/grc-2024-c-05199.jpg 4128w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=1024,683 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=1536,1024 1536w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=2048,1365 2048w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=900,600 900w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=1200,800 1200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-c-05199.jpg?resize=2000,1333 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\">TECH Day at NASA Attracts Middle School Students\u00a0<\/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\t4 days 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\/centers-and-facilities\/glenn\/nasa-glenns-yvette-harris-inducted-into-mba-hall-of-fame\/\" 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=\"290\" height=\"300\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?w=290\" 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\/2024\/06\/grc-2024-cn-00017.jpg 990w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?resize=290,300 290w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?resize=768,794 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?resize=387,400 387w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?resize=580,600 580w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/06\/grc-2024-cn-00017.jpg?resize=870,900 870w\" sizes=\"(max-width: 290px) 100vw, 290px\" \/><\/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\">2 min read<\/div>\n\t\t\t\t\t\t\t\t<div class=\"margin-bottom-1\"><h3 class=\"related-article-title\">NASA Glenn\u2019s Yvette Harris Inducted into MBA Hall of Fame\u00a0<\/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\t4 days 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>","protected":false},"excerpt":{"rendered":"<p>Editor’s note, Feb. 6, 2024: This article has been updated to clarify that the Radio Frequency Mass Gauge estimates how much propellant is available in a tank. It does not make an exact measurement. It\u2019s easy to measure fuel in tanks on Earth, where gravity pulls the liquid to the bottom. But in space, the game [...]<\/p>\n","protected":false},"author":481,"featured_media":608406,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"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":[],"footnotes":""},"categories":[2856,10574,12411,3333,2788,3335],"news-tags":[],"internal-terms":[10645,3911,8598],"coauthors":[12786,12636],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"NewsArticle","headline":"NASA Tests New Spacecraft Propellant Gauge on Lunar Lander","url":"https:\/\/www.nasa.gov\/centers-and-facilities\/glenn\/nasa-tests-new-spacecraft-propellant-gauge-on-lunar-lander\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/www.nasa.gov\/centers-and-facilities\/glenn\/nasa-tests-new-spacecraft-propellant-gauge-on-lunar-lander\/"},"thumbnailUrl":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4-1.jpg?w=150&h=150&crop=1","image":{"@type":"ImageObject","url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4-1.jpg"},"articleSection":"NASA Centers & Facilities","author":[{"@type":"Person","name":"Ellen Bausback"},{"@type":"Person","name":"Glenn Communications"}],"creator":["Ellen Bausback","Glenn Communications"],"publisher":{"@type":"Organization","name":"NASA","logo":"https:\/\/www.nasa.gov\/wp-content\/themes\/nasa\/assets\/images\/nasa-logo.svg"},"keywords":["NASA Directorates","Space Technology Mission Directorate","Technology Demonstration Missions Program","Glenn Research Center","Commercial Lunar Payload Services (CLPS)","Cryogenic Fluid Management (CFM)","Flight Opportunities Program","Technology Demonstration"],"dateCreated":"2024-02-06T14:59:14Z","datePublished":"2024-02-06T14:59:14Z","dateModified":"2024-03-18T14:07:01Z"},"rendered":"<meta name=\"parsely-title\" content=\"NASA Tests New Spacecraft Propellant Gauge on Lunar Lander\" \/>\n<meta name=\"parsely-link\" content=\"https:\/\/www.nasa.gov\/centers-and-facilities\/glenn\/nasa-tests-new-spacecraft-propellant-gauge-on-lunar-lander\/\" \/>\n<meta name=\"parsely-type\" content=\"post\" \/>\n<meta name=\"parsely-image-url\" content=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4-1.jpg?w=150&h=150&crop=1\" \/>\n<meta name=\"parsely-pub-date\" content=\"2024-02-06T14:59:14Z\" \/>\n<meta name=\"parsely-section\" content=\"NASA Centers & Facilities\" \/>\n<meta name=\"parsely-tags\" content=\"NASA Directorates,Space Technology Mission Directorate,Technology Demonstration Missions Program,Glenn Research Center,Commercial Lunar Payload Services (CLPS),Cryogenic Fluid Management (CFM),Flight Opportunities Program,Technology Demonstration\" \/>\n<meta name=\"parsely-author\" content=\"Ellen Bausback\" \/>\n<meta name=\"parsely-author\" content=\"Glenn Communications\" \/>","tracker_url":"https:\/\/cdn.parsely.com\/keys\/nasa.gov\/p.js"},"read_time":3,"time_ago":"4 months","featured_image":{"id":608406,"file":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2024\/02\/microsoftteams-image-4-1.jpg","title":"microsoftteams-image-(4)","alt":"","caption":""},"_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/604478"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/481"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/comments?post=604478"}],"version-history":[{"count":33,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/604478\/revisions"}],"predecessor-version":[{"id":633235,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/604478\/revisions\/633235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/608406"}],"wp:attachment":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media?parent=604478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/categories?post=604478"},{"taxonomy":"news-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/news-tags?post=604478"},{"taxonomy":"internal-terms","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/internal-terms?post=604478"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/coauthors?post=604478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}