Advantages of hydrofoil-hydroduct system for propulsion of high speed surface craft led to investigation of axisymmetric air powered hydroduct to evaluate it thrust producing capability; thrust, inlet pressure, and mixing-chamber pressure were determined at speeds between 20 and 60 fps; maximum efficiency was 53% at thrust coefficient of 0.10; theoretical development of underwater ramjet cycle; method for including effect of choking.
Preliminary investigation of underwater ramjet powered by compressed air
NASA -- Tech Notes
1961
36 pages
Report
Englisch
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