Accession Number : ADP000528

Title :   Ejector Shroud Aerodynamics,

Corporate Author : ROCKWELL INTERNATIONAL COLUMBUS OH NORTH AMERICAN AIRCRAFT DIV

Personal Author(s) : DeHart,J. H. ; Smrdel,S. J.

Report Date : JUN 1982

Pagination or Media Count : 23

Abstract : An experimental and analytical study has been conducted to determine the effect of shroud parameters on ejector thrust augmentation. The ejector shroud is analogous to a wing operating in a non-linear stream and potential flow methods were utilized to predict ideal pressure distributions on the shroud. Scale model tests were conducted to determine actual forces and pressure distributions on shroud components. Experimental data were obtained for symmetrically increased flap lengths (L/W) and asymmetric flap lengths. It is shown that flap length increases produce higher thrust augmentation ratios by delaying stall to higher diffuser area ratios.

Descriptors :   *Ejectors, *Thrust augmentation, *Thrust augmentor nozzles, *Coverings, Scale models, Experimental data, Flaps(Control surfaces), Length, Symmetry, Asymmetry, Mathematical models, Aerodynamics, Workshops

Distribution Statement : APPROVED FOR PUBLIC RELEASE