A Modified Multhopp Approach for Predicting Lifting Pressures and Camber Shape for Composite Planforms in Subsonic Flow PDF Download
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Author: John E. Lamar
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 86
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Book Description
Author: John E. Lamar
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 86
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 656
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 808
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 200
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Book Description
Author: Francis J. Capone
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 76
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Book Description
Author: Edward C. Polhamus
Publisher:
ISBN:
Category : Delta wing airplanes
Languages : en
Pages : 18
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Book Description
Author: John E. Lamar
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 332
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Book Description
The experimental balance and pressure data obtained from tests of an untwisted variable-sweep wing with an outboard pivot exhibited nonlinearities in both total normalforce-coefficient and pitching-moment-coefficient curves for all sweep angles and fuselage conditions. These total effects have been traced back through the section data and pressure distributions to find the causes. The causes of these nonlinearities were found to be (1) separation of flow on the outer panel and (2) a leading-edge vortex flow on the inner panel. A fuselage added to the wing had little effect on the aerodynamic characteristics. Predictions of wing loadings and performance characteristics were made by using the modified Multhopp method and a comparison with experimental results indicated reasonable agreement. The changes in span loading as a result of leading-edge shed-vortex formation and flow separation at the higher angles of attack caused an increase in the induced-drag parameter.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author: Edward J. Ray
Publisher:
ISBN:
Category : Air warfare
Languages : en
Pages : 276
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Book Description
Author: John E. Lamar
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 92
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Book Description
An evaluation of a modified version of the Multhopp subsonic lifting-surface theory was made by comparing the theoretical values with experimental data. Near zero lift, the theory was found to predict reasonably adequately the lift-curve slope, aerodynamic center, damping in roll, damping in pitch, and lift coefficient due to pitch rate for delta and cropped delta planforms and also the lift-curve slope for double-delta planforms. Based on this theory, a series of design charts has been prepared for cropped double-delta planforms in subsonic compressible flow.
