Accession Number:

ADA028977

Title:

Variable-Area Ejector Development

Descriptive Note:

Final rept. 1 Jun 1974-31 Aug 1975

Corporate Author:

ARO INC ARNOLD AFS TN

Report Date:

1976-08-01

Pagination or Media Count:

90.0

Abstract:

An experimental investigation was conducted to determine the performance of a variable-area ejector. Test equipment consisted of various fixed-geometry primary driving nozzles and either a constant-area or a conical- converging mixing duct attached to a conical-diverging exit section, which was equipped with a conical centerbody. Axial movement of the conical centerbody varied the minimum area of the ejector. Five primary driving nozzle geometries were used. Both steady-state and transient performance characteristics of the ejector configurations are presented. A constant-area no centerbody ejector having a diameter equivalent to that of the variable-area ejector mixing duct was also evaluated. In general, the performance of the variable-area ejector configuration exceeded that of the constant-area ejector.

Subject Categories:

  • Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE