Item Details

Determination of Pilot and Vehicle Describing Functions From the Gemini-10 Mission

by Frederick G. Edwards
Format
Book; Government Document; Online; EBook
Published
Washington, D.C. : National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service], 1972.
Language
English
Series
NASA Technical Note
Summary
Three types of manual control maneuvers conducted during the Gemini-10 mission have been analyzed in order to measure and document the describing function of the pilot, the vehicle and the pilot-vehicle combination during an actual space mission. Measurements made from the data records of the reentry maneuver (a single axis control task) indicate that the pilot's control behavior changes during critical portions of the reentry. Measurements made of the deorbit maneuver and of a terminal phase initiation maneuver (three axis tasks) show that the pilot assigns priorities to the separate axes and controls them differently. His control technique is also influenced by the magnitude of the thrust disturbance present during the maneuvers. The results for all three types of maneuvers show that the pilot adapts to the nonlinear spacecraft control system in such a way that the combined pilot-vehicle dynamics take the form of the linear crossover model.
Description
vii, 35 p. : ill. ; 27 cm.
Mode of access: Internet.
Notes
  • Prepared at Ames Research Center.
  • Cover title.
  • Bibliography: p. 34-35.
Series Statement
NASA technical note ; NASA TN D-6803
Logo for Copyright Not EvaluatedCopyright Not Evaluated
Technical Details

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    a| Determination of pilot and vehicle describing functions from the Gemini-10 mission c| by Frederick G. Edwards.
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    a| Washington, D.C. : b| National Aeronautics and Space Administration ; a| [Springfield, Va. : b| For sale by the National Technical Information Service], c| 1972.
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    a| vii, 35 p. : b| ill. ; c| 27 cm.
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    a| NASA technical note ; v| NASA TN D-6803
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    a| Prepared at Ames Research Center.
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    a| Cover title.
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    a| Bibliography: p. 34-35.
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    a| Three types of manual control maneuvers conducted during the Gemini-10 mission have been analyzed in order to measure and document the describing function of the pilot, the vehicle and the pilot-vehicle combination during an actual space mission. Measurements made from the data records of the reentry maneuver (a single axis control task) indicate that the pilot's control behavior changes during critical portions of the reentry. Measurements made of the deorbit maneuver and of a terminal phase initiation maneuver (three axis tasks) show that the pilot assigns priorities to the separate axes and controls them differently. His control technique is also influenced by the magnitude of the thrust disturbance present during the maneuvers. The results for all three types of maneuvers show that the pilot adapts to the nonlinear spacecraft control system in such a way that the combined pilot-vehicle dynamics take the form of the linear crossover model.
    538
      
      
    a| Mode of access: Internet.
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    0
    a| Functional analysis.
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    a| Space vehicles x| Piloting x| Mathematical models.
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    a| United States. b| National Aeronautics and Space Administration.
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    a| Ames Research Center.
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    b| UIU c| UIUC d| 20141113 s| google u| uiug.30112106883645 y| 1972 r| pd q| bib

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