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  • Other Sources  (15)
  • NASA Technical Reports  (15)
  • 1985-1989  (15)
Collection
  • Other Sources  (15)
Source
  • NASA Technical Reports  (15)
Keywords
Years
Year
  • 1
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    Marshall Amateur Radio Club experiment (MARCE) post flight data analysis (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The Marshall Amateur Radio Club Experiment (MARCE) data system, the data recorded during the flight of STS-61C, the manner in which the data was reduced to engineering units, and the performance of the student experiments determined from the data are briefly described.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA. Goddard Space Flight Center The 1986 Get Away Special Experimenter's Symposium; p 149-156
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Tether Fundamentals (1985)
    In:  CASI
    Details
    Publication Date: 2014-09-17
    Description: Forces on tethered satellites, tether tension as a function of the effective mass, and parameters of candidate tether materials are examined. Illustrations show: stabilization control law; tethered satellite deployment and retrieval; angular momentum; electric motor effect reboost; a very long tether phenomenon; shuttle tethered satellite effects on the orbiter; artificial gravity; tethered satellite rendezvous docking relative velocity; and scaling up from the shuttle/TSS. Limitations of the tethered satellite system and of tether properties as well as cost/benefits trades for future applications are considered.
    Keywords: MECHANICAL ENGINEERING
    Type: Appl. of Tethers in Space, Vol. 1; 15 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Feasibility assessment of the Get-Away Tether Experiment (1986)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: The small free-flying tether system deployable from a Get-Away Special canister is analyzed. The objectives of the GAS experiment which include demonstrating electric power generation and orbital reboost using electrodynamic technology, measuring micrometeoroid hazards to the tethers, conducting a radio propagation experiment, and measuring long wire radar-cross-section are discussed. The physical layout and components of the mother and daughter satellites are described. The command and control system of the tether system is examined. The electrodynamic experiments to be conducted after plasma contact is established and the electrodynamical capabilities of the system are considered.
    Keywords: ASTRONAUTICS (GENERAL)
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Tether Dynamics Simulation Workshop summary (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The Tether Dynamics Simulation Workshop focused on the efforts of the Tether Applications Simulation Working Group (TASWG) to catalog various dynamics simulations, document environmental models, and provide a set of verified simulation results. The workshop consisted of reports on these activities and the presentation of papers on current dynamics topics of general interest. This paper documents the work performed at the Workshop and the results and recommendations for further work.
    Keywords: ASTRODYNAMICS
    Type: AIAA PAPER 88-0531
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Mach 5 inlet CFD and experimental results (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An experimental research program was conducted in the NASA Lewis Research Center 10 ft. by 10 ft. supersonic wind tunnel. The two-dimensional inlet model was designed to study the Mach 3.0 to 5.0 speed range for an 'over-under' turbojet plus ramjet propulsion system. The model was extensively instrumented to provide both analytical code validation data as well as inlet performance information. Support studies for the program include flow field predictions with both three-dimensional parabolized Navier-Stokes (PNS) and three-dimensional full Navier-Stokes (FNS) analytical codes. Analytical predictions and experimental results are compared.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 89-2355
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Mach 5 inlet CFD and experimental results (1989)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An experimental research program was conducted in the NASA Lewis Research Center 10 x 10 ft supersonic wind tunnel. The 2-D inlet model was designed to study the Mach 3.0 to 5.0 speed range for an over-under turbojet plus ramjet propulsion system. The model was extensively instrumented to provide both analytical code validation data as well as inlet performance information. Support studies for the program include flow field predictions with both 3-D parabolized Navier-Stokes (PNS) and 3-D full Navier-Stokes (FNS) analytical codes. Analytical predictions and experimental results are compared.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-TM-102317 , E-5011 , NAS 1.15:102317 , AIAA PAPER 89-2355 , Joint Propulsion Conference; Jul 10, 1989 - Jul 12, 1989; Monterey, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Coding Ropes For Length And Speed Measurements (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Ferromagnetic staples serve as markers. Like crude magnetic-tape-playback head, sensor detects ferromagnetic staples as rope is unwound or wound. Pulses from staples analyzed electronically; numbers of pulses and intervals between them interpreted in terms of velocity of rope and length payed out. Adaptable to laying submarine cables and contstruction of suspension bridges.
    Keywords: MACHINERY
    Type: MFS-28226 , NASA Tech Briefs (ISSN 0145-319X); 12; 7; P. 66
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    A manned Mars artificial gravity vehicle (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Data are presented on an artificial-gravity vehicle that is being designed for a manned Mars mission, using a 'split-mission' concept, in which an unmanned cargo vehicle is sent earlier and stored in a Mars orbit for a rendezvous with a manned vehicle about 1.5 years later. Special attention is given to the vehicle trajectory and configuration, the tether design, and the vehicle weight and launch requirements. It is shown that an artificial-G vehicle for a manned Mars missions is feasible technically and programmatically. Using an artificial-G vehicle instead of a zero-G vehicle for the piloted portion of a split mission provides physiological and human-factor-related benefits, does not eliminate requirements for zero-G countermeasures research (since zero-G is an abort mode), and could possibly reduce some life science activities. Diagrams are included.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Intl. Conference on Space Tethers for Science in the Space Station Era; Oct 04, 1987 - Oct 08, 1987; Venice; Italy
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Small Expendable-tether Deployer System (SEDS) development status (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Plans for proposed flight of the Small Expendable-tether Deployer System (SEDS) on a Delta II launch vehicle are discussed. The SEDS tether concept and mission requirements are outlined. Results are presented from calculations of the tether dynamics and computer modeling to determine tether behavior. The tether's thermal characteristics, electronics system, material, data collection procedure, payload, and orbital trace are described.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AIAA PAPER 89-1550 , International Conference on Tethers in Space - Toward Flight; May 17, 1989 - May 19, 1989; San Francisco, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Space Station tethered waste disposal (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Shuttle Transportation System (STS) launches more payload to the Space Station than can be returned creating an accumulation of waste. Several methods of deorbiting the waste are compared including an OMV, solid rocket motors, and a tether system. The use of tethers is shown to offer the unique potential of having a net savings in STS launch requirement. Tether technology is being developed which can satisfy the deorbit requirements but additional effort is required in waste processing, packaging, and container design. The first step in developing this capability is already underway in the Small Expendable Deployer System program. A developmental flight test of a tether initiated recovery system is seen as the second step in the evolution of this capability.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Intl. Conference on Space Tethers for Science in the Space Station Era; Oct 04, 1987 - Oct 08, 1987; Venice; Italy
    Format: text
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    NASA TECHNICAL REPORTS
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