Accession Number : ADP000522

Title :   Considerations on Steady- and Nonsteady-Flow Ejectors,

Corporate Author : GEORGE WASHINGTON UNIV WASHINGTON DC

Personal Author(s) : Foa,Joseph V.

Report Date : JUN 1982

Pagination or Media Count : 30

Abstract : A broad examination is made of the flow induction spectrum, from the steady-flow to the pulsating-flow ejector, with special attention to the relationships of dissipation and performance to nonsteadiness, size of migrating eddies, and diffusion. A boundary-value approach is recommended for the comparative evaluation of induction modes. The limits of attainable thrust or lift augmentation are shown to be in some cases a good deal higher than those predicted by initial-value analyses.

Descriptors :   *Ejectors, *Thrust augmentation, *Steady flow, *Unsteady flow, Boundary value problems, Lift, Mixing, Aerospace craft, Vertical takeoff aircraft, Short takeoff aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE