Method of operating a scramjet including integrated inlet and co

Details Method of operating a scramjet including integrated inlet and co Method of operating a scramjet including integrated inlet and co

1991-07-12

1993-10-26

Bertsch, Richard A.

Power plants

Reaction motor

Method of operation

602701, F02K 708, F02K 710

Patent

active

052555135

ABSTRACT:
A scramjet engine is disclosed which is effective for use in a hypersonic aircraft as an aircraft-integrated scramjet engine. The engine includes a first surface having an aft facing step, and a cowl upper surface spaced from the first surface to define an integrated inlet-combustor therebetween. A method of operating the engine includes injecting fuel into the inlet-combustor at the step for mixing fuel with supersonic airflow for generating supersonic combustion gases in the inlet-combustor. In the preferred embodiment of the invention, the fuel is injected to create a fluid boundary defining a subsonic fuel zone and a supersonic fluid zone. The fluid boundary is variable and eliminates start and unstart problems requiring variable inlet geometry in a conventional scramjet engine.

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