A simulation of high-altitude operations for jet nozzle tests on a gas dynamics differential plant

Propulsion and Power Plants


Talalayev A. A.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia


An altitude chamber is applied usually to provide separation-free gas flow during tests of high-altitude supersonic nozzles. The chamber needed for the tests is rather cumbersome and expensive plant. A supersonic diffuser is suggested to use instead of the altitude chamber. The diffuser is intended to isolate gas jet flowing out of the nozzle from environment along some distance. An analysis is carried out to reveal parameters of the diffuser suitable to various tested nozzles.

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