초록 ▼

A gas turbine engine includes a compressor section, a combustor section and a turbine section, all arranged about a central axis. A turbine rotor drives a driveshaft for rotation on the central axis. The driveshaft in turn drives at least two fan rotors on axes parallel to, but spaced from, the cent

A gas turbine engine includes a compressor section, a combustor section and a turbine section, all arranged about a central axis. A turbine rotor drives a driveshaft for rotation on the central axis. The driveshaft in turn drives at least two fan rotors on axes parallel to, but spaced from, the central axis. The fan rotors each deliver a portion of the air they move into a central inlet for delivering the air to the compressor section. In addition, the majority of the air moved by the plurality of fan rotors passes between a cowl and an outer periphery of a housing for the central core of the engine. This bypass air provides propulsion as is known in the turbojet art.

대표청구항 ▼

What is claimed is: 1. A gas turbine engine comprising:a compressor section for receiving air from a core inlet, said compressor section for compressing the air and delivering it downstream to a combustor section, air being mixed with fuel in the combustor section and combusted, the products of the

What is claimed is: 1. A gas turbine engine comprising:a compressor section for receiving air from a core inlet, said compressor section for compressing the air and delivering it downstream to a combustor section, air being mixed with fuel in the combustor section and combusted, the products of the combustion for being delivered downstream over a turbine rotor, said turbine rotor rotating a central driveshaft about a central axis;said central driveshaft extending forwardly to a gearbox, said gearbox driving a plurality of fans, with said fans rotating on axes parallel to, but spaced from said central axis;each of said plurality of fans delivering a portion of air into said core inlet, a cowl surrounding a core housing, and with a majority of air moved by each of said plurality of fans being delivered into a bypass cross-sectional area between an inner periphery of said cowl and an outer periphery of said core housing;there being two of said fans;said cowl being defined by a figure-eight shaped housing, with each of said bypass cross-sectional areas being defined by one opening in said figure-eight shaped housing;said core inlet formed near a central portion of said figure eight-shaped housing;said gearbox including a plurality of gears driven by said central driveshaft to selectively drive said plurality of fans; anda circumferential extent of rotation of each of said fans is defined about the axes, and a majority of the circumferential extent being associated with said bypass cross-sectional area, with a small portion of the circumferential extent aligned with said core inlet.