Calculation of Downwash Behind a Swept-back Wing
Author | : Paul G. Johnson |
Publisher | : |
Total Pages | : 41 |
Release | : 1948 |
Genre | : |
ISBN | : |
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Author | : Paul G. Johnson |
Publisher | : |
Total Pages | : 41 |
Release | : 1948 |
Genre | : |
ISBN | : |
Author | : G. Chester Furlong |
Publisher | : |
Total Pages | : 82 |
Release | : 1948 |
Genre | : Aiprlanes |
ISBN | : |
Author | : Maxwell Alfred Heaslet |
Publisher | : |
Total Pages | : 52 |
Release | : 1948 |
Genre | : Aerodynamics, Supersonic |
ISBN | : |
A method is developed, consistent with the assumptions of small perturbation theory, which provides a means of determining for a known load distribution, the downwash behind a wing in supersonic flow. THe analysis is based upon the use of supersonic doublets which are distributed over the plan form and wake of the wing in a manner determined from the wing loading.
Author | : Austin H. Gale |
Publisher | : |
Total Pages | : 62 |
Release | : 1949 |
Genre | : |
ISBN | : |
Author | : H. Schlichting |
Publisher | : |
Total Pages | : 14 |
Release | : 1947 |
Genre | : |
ISBN | : |
Author | : H. Schlichting |
Publisher | : |
Total Pages | : 25 |
Release | : 1947 |
Genre | : |
ISBN | : |
Author | : Seymour J. Deitchman |
Publisher | : |
Total Pages | : 142 |
Release | : 1953 |
Genre | : |
ISBN | : |
Author | : Robert H. Neely |
Publisher | : |
Total Pages | : 100 |
Release | : 1959 |
Genre | : Aeronautics |
ISBN | : |
Air-flow characteristics behind wings and wing-body combinations are described and are related to the downwash at specific tail locations for unseparated and separated flow conditions. The effects of various parameters and control devices on the air-flow characteristics and tail contribution are analyzed and demonstrated. An attempt has been made to summarize certain data in a form useful for design. The experimental data herein were obtained mostly at Reynolds numbers greater than 4 x 105 and at Mach numbers less than 0.25.
Author | : John DeYoung |
Publisher | : |
Total Pages | : 688 |
Release | : 1955 |
Genre | : Airplanes |
ISBN | : |
A rapid method for estimating the downwash behind swept-wing airplanes is presented. The basic assumption is that of a flat horizontal sheet of vortices trailing behind the wing. The integrations for the downwash are handled in a manner similar to both Multhopp's and Weissinger's approximate integrations in their span-loading calculations. The principal effects of rolling-up of the wake are treated as corrections to the flat-sheet wake. A simple approximate correction for the effect of the fuselage is applied. The agreement with available experimental data taken behind airplane models is good. Computing forms are included together with charts of pertinent functions, so as to enable simple direct application.
Author | : Louis A. Girifalco |
Publisher | : |
Total Pages | : 1082 |
Release | : 1959 |
Genre | : Crystals |
ISBN | : |
A general theory of solid-state diffusion in strained systems is developed on a molecular-kinetic basis. The theory predicts that for simple strains the diffusion coefficient is an exponential function of the lattice parameter and that the rate of change of the diffusion coefficient with strain is linearly related to the interatomic forces. It has also been shown that for plastic flow the diffusion coefficient is a linear function of strain rate. All the conclusions are confirmed by the data available in the literature.