Ground Simulator Evaluations of Coupled Roll-spiral Mode Effects on Aircraft Handling Qualities PDF Download
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Author: Frederick D. Newell
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 60
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Book Description
A systematic investigation of the lateral handling qualities of fighter aircraft ... made in a fixed-based ground simulator.
Author: Frederick D. Newell
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 58
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Book Description
A systematic investigation of the lateral handling qualities of fighter aircraft ... made in a fixed-based ground simulator.
Author: William D. Grantham
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 52
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Book Description
Simulator study of coupled roll-spiral mode effects on lateral-directional handling qualities.
Author: Robert W. Kempel
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 68
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Book Description
During the 16 glide flights of the M2 -F2 lifting body vehicle, severe lateral pilot-induced oscillations occurred on three occasions in the low - angle of -attack, final-approach, preflare situation. These oscillations were analyzed qualitatively to determine the type and similarity and by a systems analysis to determine the root cause. The analysis was complemented by a piloted simulator study, which verified the results. The systems analysis revealed the presence of a coupled roll-spiral mode which caused the pilots to generate a closed-loop lateral instability in the low-angle -of -attack, preflare flight region. A systems analysis, a piloted simulator study, and flight data showed that the addition of a fixed center fin lessened the pilot-induced-oscillation tendencies in the critical flight region.
Author: William D. Grantham
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 450
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 892
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1014
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Book Description
Author: T. S. Durand
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 98
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Book Description
The systems analysis theory of aircraft handling qualities is applied to the task of closed-loop compensatory roll tracking by ailerons alone, and exploratory experiments in a fixed-based simulator are used to verify and refine the theory. The analysis refines and extends the earlier theory of McRuer and Ashkenas, shows the dominant role of the basic spiral roll mode closure in determining the Dutch roll mode interactions, and describes the implications of these interactions on closed-loop tracking performance, pilot-adopted equalization, and probable handling qualities ratings. The key theoretical parameters evolved are: dominant closed-loop spiral roll mode frequency and damping ratio; average Dutch roll frequency; Dutch roll frequency ratio; uncompensated closed-loop Dutch roll damping ratio; and Dutch roll phase dip. The simulator results corroborated the theory and give specific values for the variation in ratings and performance with these parameters. Certain observations of nonsteady pilot behavior, interaction between input cut-off frequencies and Dutch roll dynamics, effects of other tasks such as step-aileron rolls using ailerons plus rudder, and extrapolation of single-loop results to the multiloop flight situation are discussed.
Author: Systems Technology, Inc
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 234
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Book Description
This report presents the results of analytical studies of a variety of handling quality topics related to advanced manned aircraft.
Author: Roger H. Hoh
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 902
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Book Description
