ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Hits per page

hit 1 - 1 | 1 hit

Select All Export

Unknown

Generalization of the subsonic kernel function in the s-plane, with applications to flutter analysis (1984)

Cunningham, H. J. ; Desmarais, R. N.

In: CASI

add to mindlist on the mindlist

Details

Publication Date: 2019-06-28

Description: A generalized subsonic unsteady aerodynamic kernel function, valid for both growing and decaying oscillatory motions, is developed and applied in a modified flutter analysis computer program to solve the boundaries of constant damping ratio as well as the flutter boundary. Rates of change of damping ratios with respect to dynamic pressure near flutter are substantially lower from the generalized-kernel-function calculations than from the conventional velocity-damping (V-g) calculation. A rational function approximation for aerodynamic forces used in control theory for s-plane analysis gave rather good agreement with kernel-function results, except for strongly damped motion at combinations of high (subsonic) Mach number and reduced frequency.

Keywords: AERODYNAMICS

Type: NASA-TP-2292 , L-15708 , NAS 1.60:2292

Format: application/pdf

	Location	Call Number	Expected	Availability

Others were also interested in ...

NASA TECHNICAL REPORTS

S·F·X

Overview

hit 1 - 1 | 1 hit