Gas turbine engine for use in aircraft

A gas turbine engine for use in an aircraft,

• the gas turbine engine comprising:
• a core engine including
• a low-pressure rotary structure including a low-pressure compressor and a low-pressure turbine which are coupled to each other,
• a high-pressure rotary structure including a high-pressure compressor and a high-pressure turbine which are coupled to each other, and
• a core casing that covers the low-pressure rotary structure and the high-pressure rotary structure and includes a passage of air flowing through the low-pressure rotary structure and the high-pressure rotary structure;
• a fan located in front of the core engine;
• an inner cowl that serves as an inner peripheral surface of a bypass passage that extends through the fan and bypasses the core engine;
• an accessory gear box that extracts power from the low-pressure rotary structure or the high-pressure rotary structure and supplies the power to various accessories;
• an auxiliary compressor that is attached to the accessory gear box through a continuously variable transmission, is driven by driving power of the accessory gear box, and increases pressure of compressed air extracted from the core engine;
• and
• a compressed air pipe that extends through an inside of a strut connecting the core engine and an airframe and supplies to the airframe the compressed air that has been increased in pressure by the auxiliary compressor, wherein
• the continuously variable transmission changes a rotational speed of the accessory gear box,
• the accessory gear box and the auxiliary compressor are located in an inner space between the core casing and the inner cowl,
• the compressed air pipe extends toward the strut through a route that is shorter in distance to the strut between a route from the auxiliary compressor toward a right side in a circumferential direction along the core casing and a route from the auxiliary compressor toward a left side in the circumferential direction along the core casing;
• and
• the compressed air pipe then extends through the inside of the strut.