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Propulsion system for an aircraft and method used for operating the same

A technology for propulsion systems and aircraft, which is applied in aircraft, turbine/propulsion fuel delivery systems, fuel control of turbine/propulsion devices, etc., and can solve problems such as large cavities

Active Publication Date: 2019-01-18
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this can result in a relatively heavier, larger and more expensive low pressure system, or more specifically, a relatively larger cavity within the turbine of the low pressure system

Method used

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  • Propulsion system for an aircraft and method used for operating the same
  • Propulsion system for an aircraft and method used for operating the same
  • Propulsion system for an aircraft and method used for operating the same

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Embodiment Construction

[0058] Reference will now be made in detail to present embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Numeral and letter designations are used in the detailed description to refer to features in the drawings. The same or similar designations are used in the drawings and descriptions to refer to the same or similar parts of the present invention.

[0059] As used herein, the words "first," "second," and "third" are used interchangeably to distinguish one element from another, and are not intended to denote the position or importance of individual elements.

[0060] The words "forward" and "aft" refer to relative positions within the turbomachine or vehicle, and to the normal operating attitude of the turbomachine or vehicle. For example, with respect to turbomachinery, front refers to a location closer to the engine inlet, and rear refers to a location closer to the engine nozzle or exhaust.

[0061] The words "upstre...

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PUM

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Abstract

A hybrid electric propulsion system includes a turbomachine, an electric machine coupled to the turbomachine, and a propulsor coupled to the turbomachine. A method for operating the hybrid electric propulsion system includes operating the turbomachine to drive the propulsor; receiving data indicative of a failure condition of the hybrid electric propulsion system; reducing a fuel flow to a combustion section of the turbomachine in response to receiving the data indicative of the failure condition; and extracting power from the turbomachine using the electric machine to slow down one or more rotating components of the turbomachine in response to receiving the data indicative of the failure condition.

Description

technical field [0001] The subject matter generally relates to hybrid electric propulsion systems for aircraft, and methods for operating hybrid electric propulsion systems to reduce risk of damage during fault conditions. Background technique [0002] A conventional helicopter generally includes a main rotor assembly and a tail rotor assembly. The turbomachine includes an output shaft configured to drive a main rotor assembly and a tail rotor assembly. A typical turbomachine includes a high pressure system or core in addition to a low pressure system. The low pressure shaft of the low pressure system is mechanically coupled to the output shaft through a gearbox for driving the output shaft, which in turn drives the main and tail rotor assemblies. [0003] The rotational speed of the low pressure system relative to the core may decrease due to drag on the low pressure system from the main and tail rotor assemblies. However, in the event of a load loss failure such as outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D27/02B64C27/12F02C9/46F02C6/20F02C9/28
CPCB64C27/12B64D27/02F02C6/206F02C9/28F02C9/46F05D2220/329B64D27/026H02P3/18H02P9/08F02K5/00F02C6/00F05D2220/76B64C27/14B64D27/10Y02T50/60B64D31/09B64D31/18B64D27/24H02P3/14H02P3/12B64D45/00B64D31/06
Inventor N.A.瓦纳D.E.伯格斯腾D.A.古茨
Owner GENERAL ELECTRIC CO