US 12,110,828 B2
Gas turbine engine for use in aircraft
Hiroaki Takami, Kobe (JP); Naoya Sekoguchi, Kobe (JP); Katsuhiko Ishida, Kobe (JP); Kenta Umezaki, Kobe (JP); Hiroshi Sakamoto, Kobe (JP); and Tatsuhiko Goi, Kobe (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Appl. No. 18/250,938
Filed by KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
PCT Filed Oct. 28, 2020, PCT No. PCT/JP2020/040542
§ 371(c)(1), (2) Date Apr. 27, 2023,
PCT Pub. No. WO2022/091275, PCT Pub. Date May 5, 2022.
Prior Publication US 2023/0407794 A1, Dec. 21, 2023
Int. Cl. F02C 7/275 (2006.01); B64D 41/00 (2006.01); F02C 7/32 (2006.01)
CPC F02C 7/32 (2013.01) [B64D 41/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. 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.