A Wind-tunnel Test Technique for Measuring the Dynamic Rotary Stability Derivatives Including the Cross Derivatives at High Mach Numbers PDF Download
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Author: Benjamin H. Beam
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 44
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Book Description
A method is described for measuring the dynamic stability derivatives of a model airplane in a wind tunnel. The characteristics features of this system are that single-degree-of-freedom oscillations were used to obtain combinations of rolling, yawing, and pitching motions; that the oscillations were excited and controlled by velocity feedback which permitted operation under conditions unfavorable for more conventional types of oscillatory testing; and that data processing was greatly simplified by using analog computer elements in the strain-gage circuitry.
Author: Benjamin H. Beam
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 44
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Book Description
A method is described for measuring the dynamic stability derivatives of a model airplane in a wind tunnel. The characteristics features of this system are that single-degree-of-freedom oscillations were used to obtain combinations of rolling, yawing, and pitching motions; that the oscillations were excited and controlled by velocity feedback which permitted operation under conditions unfavorable for more conventional types of oscillatory testing; and that data processing was greatly simplified by using analog computer elements in the strain-gage circuitry.
Author: O. B. Tufts
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 126
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Book Description
Author: H. Daughaday
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 66
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Book Description
Author: Kazuaki Takashima
Publisher:
ISBN:
Category :
Languages : ja
Pages :
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Book Description
Author: Clarence John Schueler
Publisher:
ISBN:
Category : Aerodynamic measurements
Languages : en
Pages : 242
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Book Description
Some of the techniques in current use for measuring dynamic stability derivatives in wind tunnels are described, with emphasis given to the important features of balance system design, data reduction methods, instrumentation and typical balance systems. The use of gas bearings for dynamic stability and roll damping balances is treated and a three-degree-of-freedom balance system employing a spherical gas bearing is described. (Author).
Author: B.H. Beam
Publisher: Рипол Классик
ISBN: 5873144745
Category : History
Languages : en
Pages : 103
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Book Description
Wind-tunnel measurements at subsonic speeds of the static and dynamic-rotary stability derivatives of a triangular-wing airplane model having a triangular vertical tail.
Author: Yavuz Nacaklı
Publisher:
ISBN:
Category : Oscillations
Languages : en
Pages : 107
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Book Description
Author: Bedford A. Lampkin
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 48
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Book Description
Author: Henry C. Lessing
Publisher:
ISBN:
Category : Stability of airplanes, Lateral
Languages : en
Pages : 42
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Book Description
The accuracy of the system was first investigated in tests under idealized condtions in which the aerodynamic derivatives were simulated by the action of gyroscopes and magnetic dampers. Later, the system was investigated in a high-speed wind tunnel using a simple model for which aerodynamic derivatives could be estimated.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 391
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Book Description
Contents: Aerodynamic Mathematical Modeling - Basic Concepts; Impact of High-Alpha Aerodynamics on Dynamic Stability Parameters of Aircraft and Missiles; Review of Techniques for Determination of Dynamic Stability Parameters in Wind Tunnels; Direct Forced-Oscillation Techniques for the Determination of Stability Derivatives in Wind-Tunnels; Wind Tunnel Measurement of Aerodynamic Derivatives Using Flexible-Sting Rigs; Rotary and Magnus Balances; Curved-Flow, Rolling Flow and Oscillatory PUre-Yawing Wind-Tunnel Test Methods for Determination of Dynamic Stability Derivatives; Support Interference; Applications of Half-Model Technique in Dynamic Stability Testing; Determination of Aircraft Dynamic Stability and Control Parameters from Flight Testing; Estimation of Dynamic Stability Parameters from Drop Model Flight Tests; Analytical Determination of Dynamic Stability Parameters; Aeroelasticity, Including Dynamic Effects of Separated Flow; Control Derivatives; Sensitivity of Aircraft Motion to Cross-Coupling and Acceleration Derivatives; Some Applications of Aerodynamic Formulations to Problems in Aircraft Dynamics; Applications of Dynamic Stability Parameters to Problems in Aircraft Dynamics; and Application to Missile Dynamics.
