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Framework for NASA Space Relay Satellite Services over the Next Decade: "Development and Demonstration of the Commercial Successors to TDRS " 27

Framework for NASA Space Relay Satellite Services over the N...

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27th Ka and Broadband Communications Conference and the 39th International Communications Satellite systems Conference, ICSSC 2022

作者： Haddad, George Kacpura, Thomas Nessel, James Paulsen, Phillip Drexler, Jonathan Hartman, Eric Hayes, Jeffrey Boldosser, Patrick Systems Engineering and Architecture Division NASA Glenn Research Center ClevelandOH United States Space Flight System Directorate CSP Office NASA Glenn Research Center ClevelandOH United States Advanced High Frequency Branch NASA Glenn Research Center ClevelandOH United States System Architecture and Analytical Studies Branch NASA Glenn Research Center ClevelandOH United States Cost and Economic Analysis Office NASA Glenn Research Center ClevelandOH United States Research and Space Operations Branch NASA Glenn Research Center ClevelandOH United States P.E Astrophysics and Heliophysics Divisions NASA Headquarter WashingtonDC United States Advanced Communications Capabilities for Exploration and Science Office NASA Goddard Space Flight Center GreenbeltMD United States

The United States National Space Policy provides guidance and directives for U.S. Government agencies to purchase commercial space services and capabilities to the maximum extent practical. In alignment with this guidance, the Agency has no plans to replenish the Tracking and Data Relay Satellite System (TDRSS) fleet operated by the Space Communication and Navigation Program (SCaN) and will instead pursue commercial services for communications with spacecraft in near-Earth orbit. The Communications Services Project (CSP) at GRC is leading this commercialization effort and in May 2022 it awarded six contracts to commercial SATCOM companies to demonstrate and validate commercial SATCOM capabilities for future NASA and near space user missions. The responses from the vendors indicated a strong interest in providing commercial services to NASA’s missions and included a wide range of proposed architectures and demonstrations concepts. Overall, the responses indicated that a mature and healthy competitive environment exists with traditional satellite operators and constellation developers to provide NASA and future near space users with commercial communication services in the next five years. This paper will present an overview of the proposed capability coverages, risk spread, and US domestic market stimulation, along with common themes and conclusions. The result of these demonstrations will serve as the basis for acquisition and provision of operational SATCOM services for NASA missions. © 2022 FGM Events LLC. All rights reserved.

关键词： NASA

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Development of an 11 kW Lightweight, High Efficiency Motor Controller for NASA X-57 Distributed Electric Propulsion Using SiC MOSFET Switches

Development of an 11 kW Lightweight, High Efficiency Motor C...

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AIAA/IEEE Electric Aircraft Technologies Symposium (EATS)

作者： Michael Garrett David Avanesian Matthew Granger Susanah Kowalewski John Maroli Wesley Miller Ralph Jansen Peter Kascak Diagnostics and Electromagnetics Branch/ Power Division Power Management and Distribution Branch/ Power Division Flight Software Branch/ Systems Engineering and Architecture Division Avionics Branch NASA Glenn Research Center Cleveland Ohio USA

A light weight, high efficiency, 11 kW motor controller, which includes the controlling processor and a three phase power inverter, has been developed at NASA Glenn Research Center for NASA's experimental all-electric manned aircraft, X-57, DEP high lift system. The high efficiency development was enabled through the use of a processor which implements Matlab/Simulink code for rapid performance optimization for specific motors and by the use of wide bandgap low-loss, low parasitic SiC switches in the power inverter. Due to the high efficiency, the controller is integrated into the high lift nacelle with no disturbance to the outer mold line of the nacelle; no drag-producing heatsinks are required. The controller weighs 1 kg and has demonstrated efficiency exceeding 97%.

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Towards a standardization for simulation scenario development in aviation - Panel discussion

Towards a standardization for simulation scenario developmen...

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AIAA Modeling and Simulation Technologies Conference, 2018

作者： Durak, Umut Jafer, Shafagh Beard, Steven D. Reardon, Scott Murphy, James R. Crider, Dennis A. Gerretsen, Arno Lenz, Helge Macchiarella, Nickolas D. Rigby, Kevin T. Torens, Christoph Adolf, Florian-Michael Institute of Flight Systems Braunschweig38108 Germany Embry-Riddle Aeronautical University Daytona BeachFL32114-3900 United States NASA Ames Research Center Moffett Field CA94035 United States National Transportation Safety Board Washington DC20594 United States Amsterdam Netherlands Flight Dynamics and Simulation Department of Electrical Computer Software and Systems Engineering Aerospace Simulation Research and Development Branch Aviation Systems Division Vehicle Simulation Aerospace Operations Operator Performance Training and Simulation Aeronautical Sciences

ISBN: (数字)9781624105289

ISBN: (纸本)9781624105289

Aviation industry is characterized by its broad utilization of modeling and simulation starting from concept demonstration to operator training. Scenario development is an important aspect of any simulation study, however, the community is still lacking of a common understanding and standardized practices. This leads to degraded interoperability and shareability. The American Institute of Aeronautics and Astronautics (AIAA) Modeling and Simulation Technical Committee (MSTC) is recently trying to create a synergy towards development of a standard scenario definition language for aviation by conducting sessions and panel discussions in conferences and launching a working group. This paper presents the recap of the panel discussion that has been carried out as a part of the invited session "Aviation Simulation Scenario Development" in AIAA Modeling and Simulation Technologies Conference of Scitech 2017. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Aviation

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Development and testing of a vehicle management system for autonomous spacecraft habitat operations

Development and testing of a vehicle management system for a...

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AIAA Space and Astronautics Forum and Exposition, 2018

作者： Aaseng, Gordon B. Frank, Jeremy D. Iatauro, Michael Knight, C. Levinson, Richard Ossenfort, John Scott, Michael Sweet, Adam Csank, Jeffrey Soeder, James Carrejo, Daniel Loveless, Andrew T. Ngo, Tam Greenwood, Zachary NASA Ames Research Center Moffett Field Intelligent Systems Division M/S/269 CA94035-1000 United States NASA Ames Research Center Moffett Field Intelligent Systems Division M/S 269-1 CA94035-1000 United States NASA Glenn Research Center Power Management and Distribution M/S 301-5 21000 Brookpark Rd ClevelandOH44135 United States NASA Glenn Research Center Power Division M/S 301-5 21000 Brookpark Rd ClevelandOH44135 United States NASA Johnson Space Center Systems Engineering and Test Branch 2101 E NASA Pkwy HoustonTX77058 United States NASA Johnson Space Center Command and Data Handling Branch 2101 E NASA Pkwy HoustonTX77058 United States NASA Johnson Space Center Spacecraft Software Engineering Branch 2101 E NASA Pkwy HoustonTX77058 United States NASA Marshall Space Flight Center Redstone Arsenal Environmental Control and Life Support Systems Branch ES62 HuntsvilleAL35812 United States

ISBN: (数字)9781624105753

ISBN: (纸本)9781624105753

As the increased distance between Earth-based mission control and the spacecraft results in increasing communication delays, small crews cannot take on all functions performed by ground today, and so vehicles must be more automated to reduce the crew workload for such missions. In addition, both near-term and future missions will feature significant periods when crew is not present, meaning the vehicles will need to operate themselves autonomously. NASA’s Advanced Exploration systems Program pioneers new approaches for rapidly developing prototype systems, demonstrating key capabilities, and validating operational concepts for future human missions beyond low-Earth orbit. Under this program, NASA has developed and demonstrated multiple technologies to enable the autonomous operation of a dormant space habitat. These technologies included a fault-tolerant avionics architecture, novel spacecraft power system and power system controller, and autonomy software to control the habitat. The demonstration involved simulation of the habitat and multiple spacecraft sub-systems (power storage and distribution, avionics, and air-side life-support) during a multi-day test at NASA’s Johnson Space Center. The foundation of the demonstration was ‘quiescent operations’ of a habitat during a 55 minute eclipse period. For this demonstration, the spacecraft power distribution system and air-side life support system were simulated at a high level of fidelity;additional systems were managed, but with lower fidelity operational constraints and system behavior. Operational constraints for real and simulated loads were developed by analyzing on-orbit hardware and evaluating future Exploration capable technology. A total of 13 real and simulated loads were used during the test. Eight scenarios including both nominal and off-nominal conditions were performed. Over the course of the test, every application performed its desired functions successfully during the simulated tests. The results wil

关键词： NASA

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Enhancing scenario-centric air traffic control training

Enhancing scenario-centric air traffic control training

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AIAA Modeling and Simulation Technologies Conference, 2018

作者： Chhaya, Bharvi Jafer, Shafagh Coyne, William B. Thigpen, Neal C. Durak, Umut Embry-Riddle Aeronautical University Daytona BeachFL32114-3900 United States Academy Oklahoma City OK73169 United States Institute of Flight Systems Braunschweig38108 Germany Department of Electrical Computer Software and Systems Engineering Embry-Riddle Aeronautical University - Daytona Beach Campus Lehman 343 600 S Clyde Morris Blvd Daytona BeachFL32114-3900 United States Air Traffic Management Embry-Riddle Aeronautical University Daytona Beach Campus 600 S Clyde Morris Blvd Daytona BeachFL32114-3900 United States Air Traffic Division AMA-511C Staff Office Training Branch Enroute Section Advanced Enroute Operations Unit Mike Monroney Aeronautical Center 6500 South MacArthur Blvd Oklahoma CityOK73169 United States Flight Dynamics and Simulation Lilienthalplatz 7 Braunschweig38108 Germany

ISBN: (数字)9781624105289

ISBN: (纸本)9781624105289

As one of the main focuses of Federal Aviation Administration (FAA) Academy, Air Traffic Control (ATC) training program heavily relies on simulation-based training and is constantly looking into optimizing the use of such technologies. On the other hand, ATC simulation scenarios are not only used for training purposes, but also are key components for conducting human performance experiments. From a recent visit at the FAA Academy, it is well apparent that there is an immediate need for a diverse pool of ATC training scenarios available to trainees off-site. Currently, training scenarios are generated manually from a subject-matter-expert’s (i.e. controllers) oral or written briefing. The effort in extracting and verifying operational scenarios and translating them into a machine-understandable language is rather cumbersome and currently conducted completely manual. To address these challenges, here we propose to develop a scenario exploration technology that provides a platform for FAA Academy trainees and instructors to exercise variety of scenarios in the ATC domain. The proposed technology provides a platform for instructors and trainees to explore various training exercises. By taking a model-driven approach and extending the recently proposed domain-specific Aviation Scenario Definition Language (ASDL), we provide ATC scenario specification and exploration platform to easily create a variety of ATC scenarios. Similar to ASDL approach, we first define an ontology for ATC extension, then specify scenario logic using a formal specification language such as statechart, and finally, include a metamodel to allow for scenario modeling. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Air traffic control

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A NASA approach to safety considerations for electric propulsion aircraft testbeds 53rd

A NASA approach to safety considerations for electric propul...

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53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017

作者： Papathakis, Kurt V. Sessions, Alaric M. Burkhardt, Phillip A. Ehmann, David W. NASA Armstrong Flight Research Center EdwardsCA93523 United States Jacobs Technology EdwardsCA93523 United States HEIST Power Architecture Vehicle Integration and Test Branch P.O. Box 273/MS4800D United States HEIST Hardware/Software Interface Simulations Engineering Branch P.O. Box 273/MS4840D United States HEIST Safety Engineer Safety of Flight Branch P.O. Box 273/MS4800 United States HEIST Power Systems Vehicle Integration and Test Branch P.O. Box 273/MS4800 United States

ISBN: (纸本)9781624105111

Electric, hybrid-electric, and turbo-electric distributed propulsion technologies and concepts are beginning to gain traction in the aircraft design community, as they can provide improvements in operating costs, noise, fuel consumption, and emissions compared to conventional internal combustion or Brayton-cycle powered vehicles. The National Aeronautics and Space Administration (NASA) is building multiple demonstrators and testbeds to buy down airworthiness and flight safety risks for these new technologies, including X-57 Maxwell, Hybrid-Electric Integrated systems Testbed (HEIST), Airvolt, and NASA Electric Aircraft Testbed (NEAT). This paper addresses the safety system design process used at NASA Armstrong flight Research Center, specific hazards associated with these new electric propulsion technologies, including an extensive investigation into the emergency-stop system for a HEIST, and other best practices. In general, the best course of action is to actively design out hazards associated with these systems, but when removing these hazards is either impossible or impractical, other safety protocols including keep-out zones, lock-out/tag-out, and other practices should be implemented.

关键词： NASA

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Toward Intelligent software Defect Detection - Learning software Defects by Example

Toward Intelligent Software Defect Detection - Learning Soft...

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Annual IEEE/ NASA Goddard Workshop on software engineering

作者： Markland J. Benson Ground Software Systems Branch Software Engineering Division NASA Goddard Space Flight Center Greenbelt MD USA

Source code level software defect detection has gone from state of the art to a software engineering best practice. Automated code analysis tools streamline many of the aspects of formal code inspections but have the drawback of being difficult to construct and either prone to false positives or severely limited in the set of defects that can be detected. Machine learning technology provides the promise of learning software defects by example, easing construction of detectors and broadening the range of defects that can be found. Pinpointing software defects with the same level of granularity as prominent source code analysis tools distinguishes this research from past efforts, which focused on analyzing software engineering metrics data with granularity limited to that of a particular function rather than a line of code.

关键词： software Presses Measurement Feature extraction software engineering Machine learning Training

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Inflatable habitat health monitoring: Implementation, lessons learned, and application to lunar or Martian habitat health monitoring

Inflatable habitat health monitoring: Implementation, lesson...

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作者： Rojdev, Kristina Hong, Todd Hafermalz, Scott Hunkins, Robert Valle, Gerard Toups, Larry NASA Johnson Space Center Houston TX 77058 United States NASA-JSC Systems Architecture and Integration Office University of Southern California - Astronautical Engineering MC: EA-341 2101 NASA Parkway Houston TX 77058 United States Project Management Office MC: EV17 2101 NASA Parkway Houston TX 77058 United States NASA-JSC Avionics Systems Division Electromagnetic Systems Branch MC: EV4 2101 NASA Parkway Houston TX 77058 United States ESCG Electronics and Software Systems NASA-JSC MC: JE22 2101 NASA Parkway Houston TX 77058 United States Systems Architecture and Integration Office NASA-JSC MC: EA-3 2101 NASA Parkway Houston TX 77058 United States Constellation Program Lunar Surface Systems Project Office NASA-JSC MC: ZS1 2101 NASA Parkway Houston TX 77058 United States

ISBN: (纸本)9781563479793

NASA's exploration mission is to send humans to the Moon and Mars, in which the purpose is to learn how to live and work safely in those harsh environments. A critical aspect of living in an extreme environment is habitation, and within that habitation element there are key systems which monitor the habitation environment to provide a safe and comfortable living and working space for humans. Expandable habitats are one of the options currently being considered due to their potential mass and volume efficiencies. This paper discusses a joint project between the National Science Foundation (NSF), ILC Dover, and NASA in which an expandable habitat was deployed in the extreme environment of Antarctica to better understand the performance and operations over a one-year period. This project was conducted through the Innovative Partnership Program (IPP) where the NSF provided the location at McMurdo Station in Antarctica and support at the location, ILC Dover provided the inflatable habitat, and NASA provided the instrumentation and data system for monitoring the habitat. The outcome of this project provided lessons learned in the implementation of an inflatable habitat and the systems that support that habitat. These lessons learned will be used to improve current habitation capabilities and systems to meet the objectives of exploration missions to the moon and Mars.

关键词： NASA

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Linking and combining distributed operations facilities using NASA's "GMSEC" system architecture

Linking and combining distributed operations facilities usin...

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SpaceOps 2008 Conference

作者： Smith, Dan Grubb, Thomas Esper, Jaime Software Engineering Division National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt MD 20771 United States Systems Engineering and Advanced Concepts Branch National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt MD 20771 United States

ISBN: (纸本)9781624101670

NASA's Goddard Mission Services Evolution Center (GMSEC) ground system architecture has been in development since late 2001 has successfully supported eight orbiting satellites and is being applied to several of NASA's future missions. GMSEC can be considered an event-driven, service-oriented architecture built around a publish/subscribe message bus middleware. This paper briefly discusses the GMSEC technical approaches which have led to significant cost savings and risk reduction for NASA missions operated at the Goddard Space flight Center (GSFC). The paper then focuses on the development and operational impacts of extending the architecture across multiple mission operations facilities.

关键词： NASA

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Advances in POST2 End-to-End Descent and Landing Simulation for the ALHAT Project

Advances in POST2 End-to-End Descent and Landing Simulation ...

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作者： Davis, Jody L. Striepe, Scott A. Maddock, Robert W. Hines, Glenn D. Paschall II, Stephen Cohanim, Babak E. Fill, Thomas Johnson, Michael C. Bishop, Robert H. DeMars, Kyle J. Sostaric, Ronald R. Johnson, Andrew E. NASA Langley Research Center Hampton VA 23681 United States Charles Stark Draper Laboratory Cambridge MA 02139 United States University of Texas at Austin Austin TX 78712 United States NASA Johnson Space Center Houston TX 77058 United States Jet Propulsion Laboratory Pasadena CA 91109 United States Atmospheric Flight and Entry Systems Branch MS 489 United States Flight Software Systems Branch MS 472 United States GNC Systems-Mission Design United States Space Systems MS 27 555 Technology Square United States GN and C Systems Division MS 70 United States Aerospace G and C 555 Technology Square MS 70 United States Aerospace Engineering and Engineering Mechanics WRW215FA United States Aerospace Engineering and Engineering Mechanics WRW411C United States Flight Mechanics and Trajectory Design Branch Mailcode EG5 United States Optical Navigation Group-GN and C Section MS 301-121 United States

ISBN: (纸本)9781563479458

Program to Optimize Simulated Trajectories II (POST2) is used as a basis for an end-to- end descent and landing trajectory simulation that is essential in determining design and integration capability and system performance of the lunar descent and landing system and environment models for the Autonomous Landing and Hazard Avoidance Technology (ALHAT) project. The POST2 simulation provides a six degree-of-freedom capability necessary to test, design and operate a descent and landing system for successful lunar landing. This paper presents advances in the development and model-implementation of the POST2 simulation, as well as preliminary system performance analysis, used for the testing and evaluation of ALHAT project system models.

关键词： Degrees of freedom (mechanics)

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