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  • 1
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    UAS Operating Environments and Demand (2018)
    In:  CASI
    Details
    Publication Date: 2018-03-10
    Description: No abstract available
    Keywords: Aeronautics (General)
    Type: AFRC-E-DAA-TN53598 , 2018 FAA UAS Symposium; 6-8 Mar. 2018; Baltimore, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Testing of the NASA Exploration Extravehicular Mobility Unit Demonstration (xEMU Demo) Architecture at the Neutral Buoyancy Laboratory (NBL) (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-26
    Description: Following Z-2 space suit testing that occurred from 2016-2017, the Exploration Extravehicular Mobility Unit (xEMU) Project was tasked with building a demonstration unit of the xEMU space suit to test on the International Space Station (ISS) in 2023. This suit is called xEMU Demonstration Suit (xEMU Demo). Based on feedback from astronauts during the Z-2 NBL test series, design changes were made, resulting in a new prototype suit called the Z-2.5 space suit. The design of the Z-2.5 space suit with an exploration Portable Life Support Systems (xPLSS) mock-up represents the architecture of xEMU Demo. The team is testing Z-2.5 in the NBL to evaluate this architecture and validate changes made from Z-2. The results will inform the xEMU Demo design going forward to its Preliminary Design Review (PDR) in the summer of 2019. This Z-2.5 NBL test series focuses on evaluating the microgravity performance of the suit and the ability to complete ISS-related tasks. The series is comprised of 10 manned runs and an unmanned corn-man run. Six test subjects, including four astronauts, will participate. The test objective is to evaluate ability xEMU Demo architecture to perform ISS microgravity tasks. Each crew members will complete both a familiarization run and a nominal EMU EVA timeline run. Qualitative and quantitative data will be collected to aid the assessment of the suit. Preliminary feedback from astronauts who have completed the test series evaluate the xEMU Demo architecture as acceptable to complete a demonstration mission on the ISS.
    Keywords: Man/System Technology and Life Support
    Type: JSC-E-DAA-TN70593 , International Conference on Environmental Systems (ICES) 2019; Jul 07, 2019 - Jul 11, 2019; Boston, MA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Evaluation of Ionic Liquids for Closed Air Revitalization (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-23
    Description: This document is the final report resulting from the work conducted by undergraduate students at the University of South Alabama during the 2018/2019 academic year and was prepared by the undergraduate students. As NASA pushes the boundaries further into space, the current technologies within the various life support systems must be improved upon. One such improvement is needed to the current air revitalization systems, specifically sorbents that can capture CO2 more effectively from enclosed habitats. Ionic liquids (ILs) have been considered as absorbents for flue gas, but little research has been done to test the ability of ILs at ambient pressures and relatively low concentration of CO2. The experiment outlined below utilizes the task-specific ionic liquid, tetramethylammonium taurinate (TMN), in a commercial off the shelf absorption system to capture CO2. The CO2 stream is combined with nitrogen to produce an inlet gas concentration relevant to close air revitalization applications. At an inlet gas flow with a CO2 partial pressure of 3.8 torr the system was capable of removing just under 97% of the inlet CO2. The concentration of CO2 in the outlet stream, partial pressure 0.16 torr, was less than that of atmospheric air. The duty required to separate the absorbed gas from the ionic liquid as well to cool the ionic liquid to be reintroduced to the column were acquired utilizing laboratory cooling/heating baths. These results show that TMN may be an efficient candidate for consideration in closed air revitalization.
    Keywords: Man/System Technology and Life Support
    Type: M19-7479
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    UAS Research - Who's Doing What? (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This presentation includes the UAS-Enabled Market Categories used in Study, as well as the reason for the UAS-NAS NO Chase COA flight. It discusses the transitioning of a UA from different airspaces. UAS Integration is a community wide effort, and the FAA Symposium provides attendees with the opportunity to engage face-to-face with a cross-section of government and industry leaders and innovators about the latest industry developments, regulations, research, and other initiatives to safely integrate UAS into the National Airspace System (NAS).
    Keywords: Aeronautics (General)
    Type: AFRC-E-DAA-TN53416 , 2018 FAA UAS Symposium; Mar 06, 2018 - Mar 08, 2018; Baltimore, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    International Space Station (ISS) Environmental Control and Life Support System (ECLSS) Vent Flow Reflection and Detection by Robotic External Leak Locator (RELL) (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: On-orbit Robotic External Leak Locator (RELL) (i.e., mass spectrometer and ion gauge) measurements on the International Space Station (ISS) are presented to show the detection of recurring Environmental Control and Life Support System (ECLSS) vents at multiple ISS locations and RELL pointing directions. The path of ECLSS effluents to the RELL detectors is not entirely obvious at some locations, but the data indicates that diffuse gas-surface reflection or scattering resulting from plume interaction with vehicle surfaces is responsible. RELL was also able to confirm the ISS ECLSS constituents and distinguish them from the ammonia leak based on the ion mass spectra and known venting times during its operation to locate a leak in the ISS port-side External Active Thermal Control System (EATCS) coolant loop.
    Keywords: Man/System Technology and Life Support
    Type: JSC-E-DAA-TN59670 , SPIE Optical Engineering + Applications; Aug 19, 2018 - Aug 23, 2018; San Diego, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Unmanned Aircraft Systems (UAS) Integration in the National Airspace System (NAS) Project FY16 Annual Review (2016)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: This presentation gives insight into the research activities and efforts being executed in order to integrate unmanned aircraft systems into the national airspace system. This briefing is to inform others of the UAS-NAS FY16 progress and future directions.
    Keywords: Aeronautics (General)
    Type: DFRC-E-DAA-TN38587
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    UAS Integration in the NAS Project UAS Commericalization Industry Conference (2015)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Description and Update of NASA UAS in the NAS Project
    Keywords: Aeronautics (General)
    Type: AFRC-E-DAA-TN24563 , UAS Commericalization Industry Conference; Jun 23, 2015 - Jun 25, 2015; Arlington, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Portable Medical Diagnosis Instrument (2017)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: A system that integrates several technologies into a single, portable medical diagnostic apparatus for analyzing a sample body fluid (liquid and/or gas): (1) a mechanism to capture airborne microdroplets and to separate the body fluid into a first fluid component (primarily gas) and a second fluid component (primarily liquid); (2) a volatilizer to convert a portion of the second fluid component into a third fluid component that is primarily a gas; (3) a functionalized nanostructure (NS) array configured to receive, identify, and estimate concentration of at least one constituent in the first and/or third fluid components; (4) a miniaturized differential mobility spectrometer (DMS) module; and (5) a biomarker sensor, to detect volatile and non-volatile molecules in a sample fluid, which may contain one or more components of blood, breath, perspiration, saliva, and urine.
    Keywords: Man/System Technology and Life Support
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    LTN Inlets and Nozzles Branch Overview; NASA GE - Methods Development Review (2017)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: LTNInlets and Nozzles Branch Overview to be presented to GE during method review meeting. Presentation outlines the capabilities, facilities and tools used by the LTN Branch to conduct its mission of developing design and analysis tools and technologies for inlets and nozzles used on advanced vehicle concepts ranging from subsonic to hypersonic speeds.
    Keywords: Aeronautics (General)
    Type: GRC-E-DAA-TN43195 , NASA/GE- Methods Development Review; Jun 01, 2017; Cleveland, OH; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Blockage Testing in the NASA Glenn 225 Square Centimeter Supersonic Wind Tunnel (2017)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A feasibility study is in progress at NASA Glenn Research Center to implement a magnetic suspension and balance system in the 225 sq cm Supersonic Wind Tunnel for the purpose of testing the dynamic stability of blunt bodies. An important area of investigation in this study was determining the optimum size of the model and the iron spherical core inside of it. In order to minimize the required magnetic field and thus the size of the magnetic suspension system, it was determined that the test model should be as large as possible. Blockage tests were conducted to determine the largest possible model that would allow for tunnel start at Mach 2, 2.5, and 3. Three different forebody model geometries were tested at different Mach numbers, axial locations in the tunnel, and in both a square and axisymmetric test section. Experimental results showed that different model geometries produced more varied results at higher Mach Numbers. It was also shown that testing closer to the nozzle allowed larger models to start compared with testing near the end of the test section. Finally, allowable model blockage was larger in the axisymmetric test section compared with the square test section at the same Mach number. This testing answered key questions posed by the feasibility study and will be used in the future to dictate model size and performance required from the magnetic suspension system.
    Keywords: Aeronautics (General)
    Type: GRC-E-DAA-TN38534 , AIAA SciTech 2017; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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