Effect Of Aspect Ratio On Undamped Torsional Oscillations Of A Thin Rectangular Wing In Supersonic Flow
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| Author | : Charles E. Watkins |
| Publisher | : |
| Total Pages | : 42 |
| Release | : 1949 |
| Genre | : Aerodynamics, Supersonic |
| ISBN | : |
Download Effect of Aspect Ratio on Undamped Torsional Oscillations of a Thin Rectangular Wing in Supersonic Flow Book in PDF, Epub and Kindle
The velocity potential and aerodynamic-torsional moment coefficients based on the linearized equations of motion for small disturbances are derived for a rectangular wing by means of appropriate distributions of moving sources and doublets. The aerodynamic-torsional-moment coefficent to study the effect of aspect ratio on the undamped torsional oscillations of a finite rectangular wing. Decreasing the aspect ratio of the wing is found to have a highly stabilizing effect on the undamped torsional oscillations. The results of some selected calculations are presented in the figures that illustrate this fact.
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 932 |
| Release | : 1951 |
| Genre | : Aeronautics |
| ISBN | : |
Download Technical Note - National Advisory Committee for Aeronautics Book in PDF, Epub and Kindle
| Author | : Robert T. Jones |
| Publisher | : |
| Total Pages | : 708 |
| Release | : 1950 |
| Genre | : Airplanes |
| ISBN | : |
Download The Spanwise Distribution of Lift for Minimum Induced Drag of Wings Having a Given Lift and a Given Bending Moment Book in PDF, Epub and Kindle
The problem of the minimum induced drag of wings having a given lift and a given span is extended to include cases in which the bending moment to be supported by the wing is also given. Expressions for the spanwise load distribution and the minimum drag in terms of the lateral position of the load centroid are given. The results show a 15-percent reduction of the induced drag with a 15-percent increase in span over that for an elliptic loading having the same total lift and bending moment.
| Author | : Harvard Lomax |
| Publisher | : |
| Total Pages | : 48 |
| Release | : 1950 |
| Genre | : Boundary value problems |
| ISBN | : |
Download Three-dimensional, Unsteady-lift Problems in High-speed Flight Book in PDF, Epub and Kindle
The problem of the build-u of lift on two- and three-dimensional wings flying at high speeds is discussed as a boundary-value problem for the classical wave equation. Kirchhoff's formula is applied so that the analysis is reduced, just as in the steady state, to an investigation of sources and doublets. Some simple applications of this method are considered, including the determination of the starting lift of a three-dimensional wing and the potential functions for some types of unsteady vortex motion.
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 702 |
| Release | : 1949 |
| Genre | : Aeronautics |
| ISBN | : |
Download Report - National Advisory Committee for Aeronautics Book in PDF, Epub and Kindle
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 26 |
| Release | : 1951 |
| Genre | : Aeronautics |
| ISBN | : |
Download Report Book in PDF, Epub and Kindle
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 1200 |
| Release | : 1954 |
| Genre | : Aeronautics |
| ISBN | : |
Download Annual Report of the National Advisory Committee for Aeronautics Book in PDF, Epub and Kindle
Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
| Author | : Lipman Bers |
| Publisher | : |
| Total Pages | : 700 |
| Release | : 1950 |
| Genre | : Aerofoils |
| ISBN | : |
Download Velocity Distribution on Wing Sections of Arbitrary Shape in Compressible Potential Flow Book in PDF, Epub and Kindle
The method of computing velocity and pressure distributions along wing profiles under the assumption of the simplified density-speed relation, outlined in NACA Technical Note 1006, is extended to the case of a nonsymmetrical profile and a flow with circulation. The shape of the profile, the speed of the undisturbed flow, and a parameter determing the angle of attack may be prescribed. The problem is reduced to a nonlinear integral equation which can be solved numerical by an iteration method. A numerical example is given.
| Author | : |
| Publisher | : |
| Total Pages | : 690 |
| Release | : 1949 |
| Genre | : Shock (Mechanics) |
| ISBN | : |
Download The Shock and Vibration Bulletin Book in PDF, Epub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 62 |
| Release | : 1949 |
| Genre | : Science |
| ISBN | : |
Download Bibliography of Technical Reports Book in PDF, Epub and Kindle
