Accession Number : AD0778448

Title :   A Comparison Test of the Hypermixing Nozzle.

Descriptive Note : Interim rept.,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bevilaqua,Paul M. ; Toms,Howard L. , Jr

Report Date : JAN 1974

Pagination or Media Count : 40

Abstract : The performance of a class of low area ratio thrust augmenting ejectors has been investigated to determine the effect of increasing the rate of jet mixing at some cost in primary thrust efficiency. Tests were performed with a single shroud and three interchangeable nozzles. A one dimensional analysis was used to compute ideal levels of augmentation and assess the relative importance of the injection losses. It is seen that hypermixing significantly improves ejector performance by making effective diffusion of the mixed flow possible. (Author)

Descriptors :   *Short takeoff aircraft, *Thrust augmentor nozzles, Diffusers, Jet mixing flow, Ejectors, Nozzle area ratio, Thrust augmentation

Subject Categories : Aerodynamics
      V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE