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
Final rept. on Task III
BOEING COMMERCIAL AIRPLANE CO SEATTLE WA
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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.
- Transport Aircraft
- Jet and Gas Turbine Engines