silkski/ENERAD huggingface dataset:
The author argues that the aeronautics research and technology base has shifted from a discipline focus to a program focus . The program planning is progressing as Level I is complete and Level II plans are under development , while there is significant inter - center planning and coordination taking place . These programs are addressing problems that are important to the nation namely , " the three pillars to success " which are ; access to space , global civil aviation and revolutionary technology leaps .
NASA is developing a new launch vehicle , called the Space Launch System ( SLS ) , which is intended on taking humans out of low earth orbit to destinations including the moon , asteroids , and Mars . The propulsion system for the core stage of this vehicle includes four RS-25 Liquid Hydrogen / Oxygen rocket engines . These engines are upgraded versions of the Space Shuttle Main Engines ( SSME ) ; the upgrades include higher power levels and affordability enhancements . As with any new vehicle , the Main Propulsion System ( MPS ) , which include the feedlines and ancillary hardware connecting the engines to the fuel and oxidizer tanks , had to be redesigned ( figure 1 - export clearance in progress ) , as the previous MPS for the SSME 's was inherently part of the Space Shuttle System , which had a completely different overall configuration .
Balance control and locomotor patterns were altered in Apollo crewmembers on the lunar surface , owing , presumably , to a combination of sensory - motor adaptation during transit and lunar surface operations , decreased environmental affordances associated with the reduced gravity , and restricted joint mobility as well as altered center - of - gravity caused by the EVA pressure suits . Dr. Paloski will discuss these factors , as well as the potential human and mission impacts of falls and malcoordination during planned lunar sortie and outpost missions . Learning objectives : What are the potential impacts of postural instabilities on the lunar surface ? CME question : What factors affect balance control and gait stability on the moon ? Answer : Sensory - motor adaptation to the lunar environment , reduced mechanical and visual affordances , and altered biomechanics caused by the EVA suit .
This work was motivated by the goal to increase the power to weight ratio of rotorcraft drive systems . Experiments were conducted to establish the performance of gears made from an aerospace alloy used in production aircraft . Bending fatigue , pitting , and scuffing test procedures and results are documented . The data establishes a baseline for evaluation of new technologies . Recommendations are made to improve test procedures for future work .
The Numerical Propulsion System Simulation ( NPSS ) is a concerted effort by NASA Glenn Research Center , the aerospace industry , and academia to develop an advanced engineering environment or integrated collection of software programs for the analysis and design of aircraft engines and , eventually , space transportation components . NPSS is now being applied by GE ground power to ground power generation with the view of expanding the capability to nontraditional power plant applications ( example : fuel cells ) and NPSS has an interest in in - space power and will be developing those simulation capabilities .
This viewgraph presentation reviews the issues surrounding the management of knowledge in regards to safety and mission assurance . The JSC workers who were hired in the 1960 's are slated to retire in the next two to three years . The experiences and knowledge of these NASA workers must be identified , and disseminated . This paper reviews some of the strategies that the S&MA is developing to capture that valuable institutional knowledge .
Oshynee 's precision Learning Objective performance factor rubrics with associated behavioral anchors integrates with Thinking Worlds(TradeMark ) , to provide event data recording and dynamic prescriptive feedback . Thinking Worlds(TradeMark ) provides SCORM parametric data for reporting within the game and within overarching curricula or workplace evaluation strategy . - Open - sourced , browser - based digital dashboard reporting tools collect data from TW , LMS , LCMS , HR , and workplace metrics or control systems The games may be delivered across the internet or in a range of networked and stand - alone methods using the delivery model ( s ) required by the host organization .
Simutator operators face a twofold entity management problem during Live - Virtual - Constructive ( LVC ) training events . They first must filter potentially hundreds of thousands of simulation entities in order 10 determine which elements are necessary for optimal trainee comprehension . Secondarily , they must manage the number of entities entering the simulation from those present in the object model in order to limit the computational burden on the simulation system and prevent unnecessary entities from entering the simulation , This paper focuses on the first filtering stage and describes a novel approach to entity filtering undertaken to maximize trainee awareness and learning . The feasibility of this novel approach is demonstrated on a case study and limitations to the proposed approach and future work are discussed .
NASA 's Chandra X - Ray Observatory , designed for three years of operation with a goal of five years is now entering its 15 - th year of operation . Thanks to its superb angular resolution , the Observatory continues to yield new and exciting results , many of which were totally unanticipated prior to launch . We will review some scientific highlights and present " lessons learned " from the experience of operating this great observatory .
The need for a small step semantics and more generally for a thorough documentation and understanding of Coq 's tacticals and PVS 's strategies arise with their growing use and the progressive uncovering of their subtleties . The purpose of the following study is to provide a simple and clear formal framework to describe their detailed semantics , and highlight their differences and similarities .
Spontaneous instabilities can pose a significant challenge to verification of combustion stability , and characterizing its onset is an important avenue of improvement for stability assessments of liquid propellant rocket engines . Recurrence Quantification Analysis ( RQA ) is used here to explore nonlinear combustion dynamics that might give insight into instability . Multiple types of patterns representative of different dynamical states are identified within fluctuating chamber pressure data , and markers for impending instability are found . A class of metrics which describe these patterns is also calculated . RQA metrics are compared with and interpreted against another metric from nonlinear time series analysis , the Hurst exponent , to help better distinguish between stable and unstable operation .
The use of plasmas to process materials has become widespread throughout the semiconductor industry . Plasmas are used to modify the morphology and chemistry of surfaces . We report on initial plasma processing experiments using the Fisk Plasma Source . Metallic and semiconductor thin films deposited on a silicon substrate have been exposed to argon plasmas . Results of microscopy and chemical analyses of processed materials are presented .
This paper describes a telerobotics display system , the Multi - mode Manipulator Display System ( MMDS ) , that has applications for a variety of remotely controlled tasks . Designed primarily to assist astronauts with the control of space robotics systems , the MMDS has applications for ground control of space robotics as well as for toxic waste cleanup , undersea , remotely operated vehicles , and other environments which require remote operations . The MMDS has three modes : ( 1 ) Manipulator Position Display ( MPD ) mode , ( 2 ) Joint Angle Display ( JAD ) mode , and ( 3 ) Sensory Substitution ( SS ) mode . These three modes are discussed in the paper .
This viewgraph presentation provides information on three flight tests in which NASA Langley 's ARIES B-757 research aircraft was intentionally piloted into areas with a high risk for severe atmospheric turbulence . During its encounter with turbulence , instruments aboard the aircraft monitored wind , temperature and acceleration , and onboard Doppler radar detected forward turbulence . Data was collected along a spectrum , from smooth air to severe turbulence .
Satellites deployed from the Gateway in a Near Rectilinear Halo Orbit ( NRHO ) must be safely delivered their desired destinations in cislunar space and beyond . The presence of simultaneously significant gravitational forces from the Moon , the Earth , and the Sun , along with the absence of atmospheric drag , complicates the mission design problem for cubesats deployed from the Gateway . The current investigation defines candidate green zones for safe satellite deployment , allowing a passive departing spacecraft to avoid recontact with the Gateway as it departs the NRHO vicinity .
The use of pultruded carbon - epoxy rods for the reinforcement of composite laminates in some structures results in an efficient structural concept . The results of an analytical and experimental investigation of repair concepts of completely severed carbon - epoxy rods is presented . Three repair concepts are considered : ( a ) bonded repair with outside moldline and inside moldline doublers ; ( b ) bonded repair with fasteners , and ( c ) bonded repair with outside moldline doubler only . The stiffness of the repairs was matched with the stiffness of the baseline specimen . The failure strains for the bonded repair with fasteners and the bonded repair with an outside moldline doubler exceeded a target design strain set for the repair concepts .
This viewgraph presentation gives an overview of NASA earth science updates with information science technology . Details are given on NASA / Earth Science Enterprise ( ESE)/Goddard Space Flight Center strategic plans , ESE missions and flight programs , roles of information science , ESE goals related to the Minority University - Space Interdisciplinary Network , and future plans .
Extending the new field of gravitational wave ( GW ) astronomy into the millihertz band with a space - based GW observatory is a high - priority objective of international astronomy community . This paper summarizes the astrophysical promise and the technological groundwork for such an observatory , concretely focusing on the prospects for the proposed Laser Interferometer Space Antenna ( LISA ) mission concept .
The use of current balloon , control and communication technologies to test multi - junction solar sell in the stratosphere to achieve near AMO conditions have been investigated . The design criteria for the technologies are that they be reliable , low cost and readily available . Progress is reported on a program to design , launch , fly and retrieve payloads dedicated to testing multi - junction solar cells .
The Aerosciences Branch ( EV33 ) at the George C. Marshall Space Flight Center ( MSFC ) has been responsible for a series of wind tunnel tests on the National Aeronautics and Space Administration 's ( NASA ) Space Launch System ( SLS ) vehicles . The primary purpose of these tests was to obtain aerodynamic data during the ascent phase and establish databases that can be used by the Guidance , Navigation , and Mission Analysis Branch ( EV42 ) for trajectory simulations . The paper describes the test particulars regarding models and measurements and the facilities used , as well as database preparations .
The One Year Mission was designed to aid in determining the effect that extending the duration on orbit aboard the International Space Station ( ISS ) would have on a number of biological and physiological systems . Two crewmembers were selected to participate in this endeavor , one U.S. On - Orbit Segment ( USOS ) astronaut and one Russian cosmonaut . The Neuroscience and Cardiovascular and Vision Laboratories at the Johnson Space Center and the Sensory - Motor and Countermeasures Division within the Institute for Biomedical Problems were selected to investigate vestibular , sensorimotor and cardiovascular function with the two long - duration crewmembers using the established methodology developed for the Field Test ( FT ) .
The Marshall Space Flight Center Distributed Active Archive Center in Huntsville , Alabama supports the acquisition , production , archival and dissemination of data relevant to the study of the global hydrologic cycle . This paper describes the Hydrologic Cycle DAAC , surveys its principle data holdings , addresses future growth , and gives information for accessing the data sets .
Target generation systems provide virtual position and state reports of aircraft for air traffic simulations . As the scope and scale of the simulation domains expand , there is a need to develop systems that can generate position reports for thousands of simulated aircraft simultaneously at high update rates that support out - the - window visualization . This paper discusses the motivation and reasoning behind investigating development of a next generation target generator through distributed computing using clustered node processing and the benefits such a target generation system has on future research that utilizes human - in - the - loop simulations .
The classification of meteorites is commonly determined using isotopes , modal mineralogy , and bulk compositions [ 1 ] . Bulk rare earth elements ( REEs ) in meteorites are additionally utilized to understand parent body processes . Numerous authors have shown that chondritic groups exhibit REE patterns that may be attributable to their parent bodies [ e.g. 2 - 4 ] , and variations in abundances and concentrations of REEs may reflect early nebular processes , thermal metamorphism , and aqueous alteration on the parent body [ 5 - 6 ] .
The Goddard Earth Observing System Model ( GEOS - S ) , an earth system model developed in the NASA Global Modeling and Assimilation Office ( GMAO ) , has integrated the non - hydrostatic finite - volume dynamical core on the cubed - sphere grid . The extension to a non - hydrostatic dynamical framework and the quasi - uniform cubed - sphere geometry permits the efficient exploration of global weather and climate modeling at cloud permitting resolutions of 10- to 4 - km on today 's high performance computing platforms . We have explored a series of incremental increases in global resolution with GEOS - S from irs standard 72 - level 27 - km resolution ( approx.5.5 million cells covering the globe from the surface to 0.1 hPa ) down to 3.5 - km ( approx . 3.6 billion cells ) .
At the 42nd PVSC , our team presented recent advances in our space photovoltaic concentrator technology . These advances include more robust Fresnel lenses for optical concentration , more thermally conductive graphene radiators for waste heat rejection , improved color - mixing lens technology to minimize chromatic aberration losses with 4 - junction solar cells , and an articulating photovoltaic receiver enabling single - axis sun - tracking , while maintaining a sharp focal line despite large beta angles of incidence . In the past year , under a NASA Phase II SBIR program , our team has made much additional progress in the development of this new space photovoltaic concentrator technology , as described in this paper .
Mars is one of the most fascinating planets in the solar system , featuring an atmosphere , water , and enormous volcanoes and canyons . The Mars Pathfinder , Global Surveyor , and Odyssey missions mark the first wave of the Planet Earth 's coming invasion of the red planet , changing our views of the past and future of the planet and the possibilities of life . Scientist and science - fiction writer Geoffrey A. Landis will present experiences on the Pathfinder mission , the challenges of using solar power on the surface of Mars , and present future missions to Mars such as the upcoming Mars Twin Rovers , which will launch two highly - capable vehicles in 2003 to explore the surface of Mars .
ISAAC is a highly capable , highly reusable , modular , and integrated FPGA - based common instrument control and computing platform for a wide range of instrument needs as defined in the Earth Science National Research Council ( NRC ) Decadal Survey Report . This paper presents its motivation , technical approach , and the infrastructure elements . It also describes the first prototype , ISAAC I , and its application in the design of SMAP L - band radar digital filter .
As part of the NASA / Navy Abrupt Wing Stall Program , a relatively low - cost , rapid - access wind - tunnel free - to - roll rig was developed . This rig combines the use of conventional models and test apparatuses to evaluate both transonic performance and wing - drop / rock tendencies in a single tunnel entry . A description of the test hardware as well as a description of the experimental procedures is given . The free - to - roll test rig has been used successfully to assess the static and dynamic characteristics of three different configurations -- two configurations that exhibit uncommanded lateral motions , ( pre - production F / A-18E and AV-8B ) , and one that did not ( F / A-18C ) .
New advances in the theoretical treatment of atomic processes in plasmas are described . These enable not only an integrated , unified , and self - consistent treatment of important radiative and collisional processes , but also large - scale computation of atomic data with high accuracy . An extension of the R - matrix work , from excitation and photoionization to electron - ion recombination , includes a unified method that subsumes both the radiative and the di - electronic recombination processes in an ab initio manner . The extensive collisional calculations for iron and iron - peak elements under the Iron Project are also discussed .
This paper outlines a method for the stress analysis of bonded composite corrugated panel facesheet to flange joints . The method relies on the existing HyperSizer Joints software , which analyzes the bonded joint , along with a beam analogy model that provides the necessary boundary loading conditions to the joint analysis . The method is capable of predicting the full multiaxial stress and strain fields within the flange to facesheet joint and thus can determine ply - level margins and evaluate delamination . Results comparing the method to NASTRAN finite element model stress fields are provided illustrating the accuracy of the method .
A conceptual design study titled Deep - Space Optical Terminals was recently completed for an optical communication technology demonstration from Mars in the 2018 time frame . We report on engineering trades for the entire system , and for individual subsystems including the flight terminal , the ground receiver and the ground transmitter . A point design is described to meet the requirement for greater than 0.25 Gb / s downlink from the nearest distance to Mars of 0.42 AU with a maximum mass and power allocation of 40 kg and 110 W. Furthermore , the concept design addresses link closure at the farthest Mars range of 2.7 AU . Maximum uplink data - rate of 0.3 Mb / s and ranging with 30 cm precision are also addressed .
For electric vehicles , technology for monitoring , diagnosis , and prognosis of the electrical power system ( EPS ) becomes essential for safe and efficient operation . To this end , we develop a general system - level integrated diagnosis and prognosis framework , which detects , isolates , and identifies EPS faults , and predicts when the EPS will fail to deliver sufficient power . The approach takes advantage of recent work in structural model decomposition in order to distribute the global diagnosis and prognosis problems into local subproblems that can be solved in parallel , thus enabling implementation on distributed computational platforms . The framework is applied to the EPS of a planetary rover testbed , and is demonstrated using data from field experiments .
Several accumulator designs and gas charge systems are considered in order to suppress POGO within the Ares I vehicle Upper Stage Liquid Ox ygen System . The thermodynamic and flow analysis completed to evaluat e candidate designs are presented and the results are used to evaluat e the ability of each concept to meet the levied suppression requirements . One annular accumulator design meets all suppression requirement s while also providing manufacturability and operability advantages .   Of the two proposed charge systems to provide and maintain gas within   the accumulator , a passive level control design meets the charge req uirements and maximizes reliability .
This paper provides a concept for an evolution of NASA 's optical communications near Earth relay architecture . NASA 's Laser Communications Relay Demonstration ( LCRD ) , a joint project between NASA 's Goddard Space Flight Center ( GSFC ) , the Jet Propulsion Laboratory - California Institute of Technology ( JPL ) , and the Massachusetts Institute of Technology Lincoln Laboratory ( MIT LL ) . LCRD will provide a minimum of two years of high data rate optical communications service experiments in geosynchronous orbit ( GEO ) , following launch in 2019 . This paper will provide an update of the LCRD mission status and planned capabilities and experiments , followed by a discussion of the path from LCRD to operational network capabilities .
Testing was successfully completed in May 2010 on a full - scale UH-60A rotor system in the USAF 's National Full - Scale Aerodynamics Complex ( NFAC ) 40- by 80 - Foot Wind Tunnel.[1 ] The primary objective of this NASA Army sponsored test program was to acquire a comprehensive set of validation - quality measurements ona full - scale pressure - instrumented rotor system at conditions that challenge the most sophisticated modeling andsimulation tools . The test hardware included the same rotor blades used during the UH-60A Airloads flight test.[2 ] Key measurements included rotor performance , blade loads , blade pressures , blade displacements , and rotorwake measurements using large - field Particle Image Velocimetry ( PIV ) and Retro - reflective Background Oriented Schlieren ( RBOS ) .
The Overarching Mission of NASA 's Aeronautics Research Mission Directorate ( ARMD ) is : To advance U.S. technological leadership in aeronautics in partnership with industry , academia , and other government agencies that conduct aeronautics - related research . ARMD supports the Agency 's goal of developing a balanced overall program of science , exploration , and aeronautics , and ARMD 's research plans also directly support the National Aeronautics R&D Policy and accompanying Executive Order 131419 .
This paper proposes mathematical definitions of functions that can be used to detect future collisions between a point and a moving polygon . The intended application is weather avoidance , where the given point represents an aircraft and bounding polygons are chosen to model regions with bad weather . Other applications could possibly include avoiding other moving obstacles . The motivation for the functions presented here is safety , and therefore they have been proved to be mathematically correct . The functions are being developed for inclusion in NASA 's Stratway software tool , which allows low - fidelity air traffic management concepts to be easily prototyped and quickly tested .