Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author:
Publisher:
Total Pages: 960
Release: 1986
Genre: Aeronautics
ISBN:

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Active Control of Compressible Flows on a Curved Surface

Active Control of Compressible Flows on a Curved Surface
Author: L. Maestrello
Publisher:
Total Pages: 36
Release: 1985
Genre: Boundary layer
ISBN:

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"We consider the effect of localized, time-periodic surface heating and cooling over a curved surface. This is a mechanism for the active control of unstable disturbances by phase cancellation and reinforcement. It is shown that the pressure gradient induced by the curvature significantly enhances the effectiveness of this form of active control. In particular, by appropriate choice of phase, active surface heating can completely stabilize an unstable wave" -- abstract.