Accession Number:

AD0772675

Title:

Simplified Lay-Out of Supersonic, Heterogeneous Ejectors.

Descriptive Note:

Rept. for Jun 72-Apr 73,

Corporate Author:

AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1973-11-01

Pagination or Media Count:

50.0

Abstract:

A generalized analysis for supersonic ejectors with heterogeneous operating media and constant area mixing, which leads to a simple diagram for determining approximate values of ejector mass and area ratio, driver-gas Mach-number and temperature, is presented. Simplifications are obtained by considering that conservation of momentum and continuity dominates the ejector process, while conservation of energy, a condition which complicates ejector calculations, is of little influence in case of a supersonic ejector and amenable to an approximate treatment. The ejector layout diagram is also modified to provide information on off-design conditions. In a separate treatment the approximate ejector analysis is used as a first step for a refined layout, which more accurately observes conservation of energy, requiring an iteration process for a solution. Modified author abstract

Subject Categories:

  • Fluid Mechanics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE