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  • Inorganic Chemistry
  • Aircraft Stability and Control
  • GENERAL
  • 2010-2014  (2)
  • 1965-1969
  • 1955-1959
  • 2010  (2)
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  • 2010-2014  (2)
  • 1965-1969
  • 1955-1959
Year
  • 1
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    An Aircraft Separation Algorithm with Feedback and Perturbation (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A separation algorithm is a set of rules that tell aircraft how to maneuver in order to maintain a minimum distance between them. This paper investigates demonstrating that separation algorithms satisfy the FAA requirement for the occurrence of incidents by means of simulation. Any demonstration that a separation algorithm, or any other aspect of flight, satisfies the FAA requirement is a challenge because of the stringent nature of the requirement and the complexity of airspace operations. The paper begins with a probability and statistical analysis of both the FAA requirement and demonstrating meeting it by a Monte Carlo approach. It considers the geometry of maintaining separation when one plane must change its flight path. It then develops a simple feedback control law that guides the planes on their paths. The presence of feedback control permits the introduction of perturbations, and the stochastic nature of the chosen perturbation is examined. The simulation program is described. This paper is an early effort in the realistic demonstration of a stringent requirement. Much remains to be done.
    Keywords: Aircraft Stability and Control
    Type: LF99-9152
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    An Investigation of Large Tilt-Rotor Short-Term Attitude Response Handling Qualities Requirements in Hover (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A piloted simulation investigation was conducted using the NASA Ames Vertical Motion Simulator to study the impact of pitch, roll and yaw attitude bandwidth and phase delay on handling qualities of large tilt-rotor aircraft. Multiple bandwidth and phase delay pairs were investigated for each axis. The simulation also investigated the effect that the pilot offset from the center of gravity has on handling qualities. While pilot offset does not change the dynamics of the vehicle, it does affect the proprioceptive and visual cues and it can have an impact on handling qualities. The experiment concentrated on two primary evaluation tasks: a precision hover task and a simple hover pedal turn. Six pilots flew over 1400 data runs with evaluation comments and objective performance data recorded. The paper will describe the experiment design and methodology, discuss the results of the experiment and summarize the findings.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN862 , ARC-E-DAA-TN1482 , AHS 66th Annual Forum and Technology Display; May 11, 2010 - May 13, 2010; Phoenix, AZ; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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