Effects of Simulated Turbulence on Aircraft Handling Qualities
Author: Ira David Jacobson
Publisher:
Published: 1977
Total Pages: 206
ISBN-13:
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Author: Ira David Jacobson
Publisher:
Published: 1977
Total Pages: 206
ISBN-13:
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Publisher:
Published: 1978
Total Pages: 28
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DOWNLOAD EBOOKAuthor: Karl-Heinz Doetsch
Publisher:
Published: 1970
Total Pages: 196
ISBN-13:
DOWNLOAD EBOOKAn investigation to determine the ranges of various lateral directional characteristics required to provide adequate flying qualities for turning maneuvers at low speed was undertaken using an airborne V/STOL aircraft simulator. Five parameters were varied in a systematic manner: the damping ratio, the frequency, and the ratio and the frequency of the numerator of the roll-angle to aileron-control-input transfer function. The pilots performed a low speed, visual maneuvering task and documented their assessment of the characteristics through extensive comments and a numerical rating. The report presents all the data categorized with respect to the test parameters. (Author).
Author: Charles R. Chalk
Publisher:
Published: 1963
Total Pages: 174
ISBN-13:
DOWNLOAD EBOOKThe study is directed toward investigating the effects on pilots rating of large variations (L alpha) in the relative amplitude and phase of the basic airplane responses to elevator control. The effects of L alpha and true speed on longitudinal flying qualities, optimum control gain, and normal acceleration response to turbulence were investigated in a ground simulator. The steady state ratio of normal acceleration to angle of attack was found to be of significance both to the flying qualities of an airplane and to the optimum longitudinal control gain. Normal acceleration response to rough air was demonstrated to be primarily a function of L alpha and the short period frequency and damping ratio.
Author:
Publisher:
Published: 1995
Total Pages: 702
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DOWNLOAD EBOOKAuthor: Kenneth J. Szalai
Publisher:
Published: 1971
Total Pages: 44
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DOWNLOAD EBOOKIn the validation of the general purpose airborne simulator, certain motion and visual cues could not be duplicated because the airborne simulator could not be independently controlled in six degrees of freedom. According to pilot opinion (NASA TN D-6431), however, the XB-70 airplane at two flight conditions had been simulated satisfactorily. Because of the dependence of simulation results on simulator configuration, two areas were investigated after the validation program was completed. The first was the effect of mismatched cues on observed handling qualities. Experiments which varied lateral acceleration at the pilot's location and yaw rate, while keeping constant the lateral-directional dynamics displayed on the pilot's instruments, showed pilot sensitivity to directional motion cues to be different for the simulation of two XB-70 flight conditions. A technique for allowing consecutive evaluations of moving- and fixed-base configurations in flight was used successfully to determine motion cue effects. The second area investigated was the measurement and description of simulation fidelity. In-flight frequency-response measurements of the model-following system were taken to examine model-following fidelity for directly matched variables such as sideslip and roll rate as well as uncontrolled parameters such as lateral acceleration.
Author: C. J. Jansen
Publisher:
Published: 1981
Total Pages: 9
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DOWNLOAD EBOOKAuthor: David Ross Ellis
Publisher:
Published: 1975
Total Pages: 36
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DOWNLOAD EBOOKAuthor: Richard F. Vomaske
Publisher:
Published: 1961
Total Pages: 48
ISBN-13:
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