The thrust augmentation, lift augmentation, and noise reduction characteristics of compact ejectors make them potentially attractive for propulsion lift systems; however, in the past, poor thrust augmentation results have negated the other benefits. A synthesis of an ejector's internal flow phenomena developed in this paper indicates that improved mixing and diffusion can significantly increase thrust augmentation. Experiments with an ejector employing a 'hypermixing' primary nozzle confirm the analytical model's augmentation predictions and show reasonable agreement with other predicted flow characteristics. The two-dimensional primary nozzle has its slot-shaped exit throat divided into alternating segments that impart left and right deflections to the primary flow to accelerate mixing. (Author)
Low-Area Ratio, Thrust-Augmenting Ejectors
1971
7 pages
Report
No indication
English
Low Area Ratio Thrust Augmenting Ejectors
NTIS | 1971
|Low-Area Ratio, Thrust-Augmenting Ejectors
AIAA | 1972
|Low area ratio thrust augmenting ejectors
AIAA | 1971
|mment on ""Low-Area Ratio, Thrust-Augmenting Ejectors""
AIAA | 1973
|NTIS | 1975
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