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Cutoff circuit of aeroengine ignition power supply

A technology of ignition power supply and engine, applied in the field of aviation electrical appliances

Active Publication Date: 2017-05-31
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No published literature on aero-engine ignition power cut-off circuit was retrieved

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  • Cutoff circuit of aeroengine ignition power supply

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Embodiment Construction

[0007] The present invention will be described in further detail below. see figure 1 , an aeroengine ignition power cut-off circuit, comprising an engine electronic controller 1, a first ignition nozzle A and a second ignition nozzle B, the first ignition nozzle power supply output terminal 1c of the engine electronic controller 1 is connected to the first ignition nozzle A , the second ignition nozzle power supply output terminal 1d of the engine electronic controller 1 is connected to the second ignition nozzle B; it is characterized in that it also includes a double-connected single-pole normally open switch, the first relay J1 and the first relay J2; the double-connected single-pole The normally open switch is composed of the first single-pole normally open switch K1 and the second single-pole normally open switch K2; the first relay J1 has a double normally closed switch, which is composed of the first normally closed switch K3 and the second It consists of a normally cl...

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Abstract

The invention belongs to the technical field of airborne electric apparatuses, and relates to a cutoff circuit of an aeroengine ignition power supply. The cutoff circuit comprises an engine electronic controller (1), a first ignition nozzle A, a second ignition nozzle B, a duplex single-pole normally open switch, a first relay J1 and a first relay J2. According to the cutoff circuit of the aeroengine ignition power supply provided by the invention, the requirements of the airworthiness provision 25.1145 are met, and meanwhile, the normal ignition function of an engine is not affected.

Description

technical field [0001] The invention belongs to the technical field of aviation electrical appliances, and relates to a cut-off circuit of an ignition power supply of an aircraft engine. Background technique [0002] Aircraft engine ignition power supply is usually 115V AC power supply or 28V DC power supply, which has high energy. Once the engine compartment catches fire, it will have adverse effects on fire extinguishing. Therefore, Airworthiness Clause 25.1145 requires that the aircraft must have measures to quickly cut off the aeroengine ignition power supply, but it cannot Affect the normal ignition function of the engine. Public documents related to aero-engine ignition power cut-off circuit were not retrieved. Contents of the invention [0003] The purpose of the present invention is to provide a cut-off circuit for the ignition power of an aeroengine so as to meet the requirements of the airworthiness article 25.1145 without affecting the normal ignition function ...

Claims

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Application Information

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IPC IPC(8): H02H7/10H02J9/06
CPCH02H7/10H02J9/062
Inventor 张伟钟剑龙王代军
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA