Accession Number:

ADB004732

Title:

SST Technology Follow-On Program - Phase 2. Noise Suppressor/Nozzle Development. Volume 5. Performance Technology - The Effect of Initial Jet Conditions on the Mixing and Performance of a 2-D Constant Area Ejector

Descriptive Note:

Final rept. on Task III

Corporate Author:

BOEING COMMERCIAL AIRPLANE CO SEATTLE WA

Personal Author(s):

Report Date:

1975-03-01

Pagination or Media Count:

66.0

Abstract:

The effects of initial jet conditions on the performance and mixing in a constant area ejector were investigated. Initial jet conditions varied with velocity profile, base thickness, and primary turbulence level. An effect of each of these quantities on thrust and weight flow augmentation was noted. Profile measurements were affected substantially by ejector wall boundary layer growth and could not be used. Spark shadowgraphs, made through the clear ejector sidewalls, show noticeable effects of initial conditions at high pressure ratios.

Subject Categories:

  • Transport Aircraft
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE