Investigation of Engine-exhaust-airframe Interference on a Cruise Vehicle at Mach 6
Investigation of Engine-exhaust-airframe Interference on a Cruise Vehicle at Mach 6

Author: James M. Cubbage

Publisher:

Published: 1971

Total Pages: 76

ISBN-13:

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Results from an investigation of the effects of underexpanded engine exhaust flow on the aerodynamic performance and stability of a cruise airplane at Mach 6 are presented. The influence of wing reflex angle and nozzle geometry on exhaust flow interference effects was investigated on a flat-plate model. The experiments were conducted at a free-stream Reynolds number of 17.05 X 10 (to the 6 power) based on the length of the airplane model over a model angle-of-attack range of 0(degrees) to 10(degrees) and at nozzle static-pressure ratios from 1 to approximately 4.

Loads and Deformations of Buckled Rectangular Plates
Loads and Deformations of Buckled Rectangular Plates

Author: Manuel Stein

Publisher:

Published: 1959

Total Pages: 40

ISBN-13:

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The nonlinear large-deflection equations of von Kármán for plates are converted into a set of linear equations by expanding the displacements into a power series in terms of an arbitrary parameter. The post-buckling behavior of simply supported rectangular plates subjected to longitudinal compression and subject to a uniform temperature rise is investigated in detail by solving the first few of the equations. Experimental data are presented for the compression problem. Comparisons are made for total shortening and local strains and deflections which indicate good agreement between experimental and theoretical results.