Author: John E. LamarPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 86
Book Description
A Modified Multhopp Approach for Predicting Lifting Pressures and Camber Shape for Composite Planforms in Subsonic Flow
Author: John E. LamarPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 86
Book Description
NASA Technical Paper
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 656
Book Description
NASA Technical Note
Author: NASA Technical Paper
Author: Lift Induced on a Swept Wing by a Two-dimensional Partial-span Deflected Jet at Mach Numbers from 0.20 to 1.30
Author: Francis J. CaponePublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 76
Book Description
Application of the Leading-edge-suction Analogy of Vortex Lift to the Drag Due to Lift of Sharp-edge Delta Wings
Author: Edward C. PolhamusPublisher:
ISBN:
Category : Delta wing airplanes
Languages : en
Pages : 18
Book Description
Low-speed Static Wind-tunnel Investigation of a Half-span Fuselage and Variable-sweep Pressure Wing Model
Author: John E. LamarPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 332
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.
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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
Buffet and Static Aerodynamic Characteristics of a Systematic Series of Wings Determined from a Subsonic Wind-tunnel Study
Author: Edward J. RayPublisher:
ISBN:
Category : Air warfare
Languages : en
Pages : 276
Book Description
Design Charts of Static and Rotary Stability Derivatives for Cropped Double-delta Wings in Subsonic Compressible Flow
Author: John E. LamarPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 92
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.