Author: Percy Hugh Francis Miller
Publisher:
ISBN:
Category :
Languages : en
Pages : 82

Get Book Here

Book Description

Author: O. B. Tufts
Publisher:
ISBN:
Category : Stability of airplanes, Longitudinal
Languages : en
Pages : 246

Get Book Here

Book Description

Author: Robert O. Schade
Publisher:
ISBN:
Category : Stability of airplanes, Longitudinal
Languages : en
Pages : 14

Get Book Here

Book Description
An investigation has been conducted to determine the dynamic longitudinal stability as influenced by the static stability measured in wind-tunnel force tests under conditions of constant thrust and constant power. The amount of static stability was varied in flight tests by changing the power applied to a pusher propeller with an offset thrust axis and by shifting the center of gravity of the model.

Author: Benjamin H. Beam
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 44

Get Book Here

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: Irving Abel
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 76

Get Book Here

Book Description
An experimental evaluation of analytical techniques for predicting certain stability and control characteristics of a large flexible aircraft is presented. Analytical methods based on both the model approach and flexibility influence coefficients are developed to predict the aerodynamic characteristics of a flexible airplane. These methods are then applied to a flexibly scaled model of a supersonic transport configuration. Comparisons of wind-tunnel data, calculations based on the model approach, and flexibility influence coefficients are presented over the Mach number range from 0.6 to 2.7. An examination of the results obtained from this study indicates that both analytical techniques predict reasonably well the effect of flexibility on the basic longitudinal characteristics and that both techniques give generally comparable results.

Author: James P. Shivers
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 236

Get Book Here

Book Description
Subsonic wind tunnel investigation of rotary wing configurations for VTOL aircraft in cruise mode.

Author: Ralph P. Bielat
Publisher:
ISBN:
Category :
Languages : en
Pages : 65

Get Book Here

Book Description

Author: William A. Newsom
Publisher:
ISBN:
Category : Downwash (Aerodynamics)
Languages : en
Pages : 110

Get Book Here

Book Description

Author: Edward C. Polhamus
Publisher: BiblioGov
ISBN: 9781289267513
Category :
Languages : en
Pages : 24

Get Book Here

Book Description
An investigation was made in the Langley high-speed 7- by 10-foot tunnel to determine the high-speed lateral and directional stability characteristics of a 0.10-scale model of the Grumman XF9F-2 airplane in the Mach number range from 0.40 to 0.85. The results indicate that static lateral and directional stability is present throughout the Mach number range investigated although in the Mach number range from 0.75 to 0.85 there is an appreciable decrease in rolling moment due to sideslip. Calculations of the dynamic stability indicate that according to current flying-quality requirements the damping of the lateral oscillation, although probably satisfactory for the sea-level condition, may not be satisfactory for the majority of the altitude conditions investigated.

Author:
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 77

Get Book Here

Book Description