Mitsubishi Heavy Industries Limited

Mariko Hirokane

Keisuke Ando

Yoshihiko Ueno

Shojiro Furuya

Masaharu Nakamura

A jet engine has an inletconfigured to introduce air, and a combustorhaving a fuel injection portthat injects a fuel, and configured to combust the fuel injected from the fuel injection portby using the air. The combustorhas a separation sectiondefining the air passage FA through which the air flows, between a rear endof the inlet and the fuel injection port. A plurality of turbulent flow generating sections () are arranged in the separation sectionto makes the air flow turbulent. Each of the plurality of turbulent flow generating sections () contains a member (B) which can restrain the turbulence of the air flow by moving or disappearing. It can be prevented that a high-pressure region reaches the inlet so that the thrust of the jet engine is reduced.

Jet engine, flying object, and operation method of jet engine

A scramjet engine has a first passage forming member and a second passage forming member. A passage is formed between a first surface and a second surface. The passage has an upstream zone, a combustion zone and a downstream zone. A cavity of a concave shape is provided on the first surface in the combustion zone. The first passage forming member has a convex section located in the upstream zone, a first fuel injection section configured to inject fuel into the passage from a first fuel nozzle provided for the convex section, and a second fuel injection section configured to inject fuel to the cavity. The second passage forming member has a third fuel injection section configured to inject fuel to a direction toward the first surface from the second surface in the passage through a second fuel nozzle provided in the downstream zone.

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Tokyo, Japan

Mariko Hirokane