Safran Helicopter Engines

Turbomeca

Nicolas Bulot

Laurent Pierre Tarnowski

Fabrice Marchand

Pascal Lebrusq

Paul-Etienne Jactat

Thierry Vergez

Jérôme Porodo

Jerome Porodo

An air supply plenum for an engine, the plenum being disposed upstream of an air intake of the engine, the air intake being provided in a casing of the engine. The air supply plenum includes a first lateral wall and a second lateral wall which together form a conduit in which an air flow flows as the engine functions. Each lateral wall includes a step which forms a transverse recess relative to the direction of the air flow in the air supply plenum, such that an aerodynamic separation occurs in the step when the engine is operating.

Air supply plenum

A helicopter engine air intake including an anti-icing grid that provides a large bypass flow in event of icing. The air intake includes air intake lips and an anti-icing grid mounted on outer ends of the air intake lips, being interposed in the air flow penetrating into the air intake, at least one air intake lip being formed by a thin metal sheet.

Helicopter engine air intake with increased bypass flow

The invention relates to a vane () of a diffuser () for a radial or mixed-flow compressor () of an engine (), including a leading edge () arranged facing a flow of gas, a trailing edge () being opposite the leading edge (), a side upper surface wall () and a side lower surface wall () which connect the leading edge () to the trailing edge (), and a profile including a curved line () having at least two points of inflection (I, I) between the leading edge () and the trailing edge (). The invention also relates to a corresponding radial diffuser ().

Radial or mixed-flow compressor diffuser having vanes

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Assat, France

Nicolas Bulot