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  • 1
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    NASA ride quality program at the Flight Research Center (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-26
    Description: A flight test program to determine the effects of low frequency vibrations on passengers in short haul aircraft is discussed. The objective of the program is to accumulate flight test data on aircraft ride quality in terms of vehicle motion and acceleration and human responses. The subjects discussed are: (1) test procedures, (2) data processing, and (3) the program schedule.
    Keywords: AIRCRAFT
    Type: Symp. on Vehicle Ride Quality; p 247-251
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Experience with flight test trajectory guidance (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Previously cited in issue 3, p. 325, Accession no. A82-14379
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: (ISSN 0731-5090)
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Passenger ride quality response to an airborne simulator environment (1975)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The present study was done aboard a special aircraft able to effect translations through the center of gravity with a minimum of pitch and roll. The aircraft was driven through controlled motions by an on-board analog computer. The input signal was selectively filtered Gaussian noise whose power spectra approximated that of natural turbulence. This input, combined with the maneuvering capabilities of this aircraft, resulted in an extremely realistic simulation of turbulent flight. The test flights also included varying bank angles during turns. Subjects were chosen from among NASA Flight Research Center personnel. They were all volunteers, were given physical examinations, and were queried about their attitudes toward flying before final selection. In profile, they were representative of the general flying public. Data from this study include (1) a basis for comparison with previous commercial flights, that is, motion dominated by vertical acceleration, (2) extension to motion dominated by lateral acceleration, and (3) evaluation of various bank angles.
    Keywords: BEHAVIORAL SCIENCES
    Type: The 1975 Ride Quality Symp.; p 373-385
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Ground and flight experience with a strapdown inertial measuring unit and a general purpose airborne digital computer (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Ground and flight tests were conducted to investigate the problems associated with using a strapdown inertial flight data system. The objectives of this investigation were to develop a three axis inertial attitude reference system, to evaluate a self-alignment technique, and to examine the problem of time-sharing a general purpose computer for the several tasks required of it. The performance of the strapdown platform/computer system that was developed was sufficiently accurate for the tasks attempted. For flights on the order of 45 minutes duration, attitude angle errors of + or -.035 radian (+ or -2 deg) in all axes were observed. Laboratory tests of the self-alignment technique gave accuracies of + or -.00075 radian in pitch and roll axes and + or -0.0045 radian in the yaw axis. Self-alignment flight results were inconsistent, since a stable solution was not obtained on windy days because of aircraft rocking motions.
    Keywords: NAVIGATION
    Type: NASA-TM-X-2848 , H-735
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Experience with flight test trajectory guidance (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A system that provides the test pilot with flight test trajectory guidance is presently evolving at the NASA Dryden Flight Research Facility. In use, this system has resulted in discernible improvements in the ease and accuracy with which pilots have approached and maintained the desired flight test conditions or trajectories. This paper describes the use of the guidance system in several past flight programs at Dryden, including the F-111 TACT program, the F-15 airframe/propulsion system interaction program, the F-15 cone transition and boundary layer experiments, and the Space Shuttle tiles flight test program.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AIAA PAPER 81-2504 , Flight Testing Conference; Nov 11, 1981 - Nov 13, 1981; Las Vegas, NV
    Format: text
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