Unlock instant, AI-driven research and patent intelligence for your innovation.

Helicopter emergency auxiliary folding and unfolding method

A technology of helicopters and machinery, applied in rotorcraft, motor vehicles, transportation and packaging, etc., can solve the problem of stopping the folding and unfolding process

Inactive Publication Date: 2016-06-08
JIANGXI CHANGHE AVIATION IND
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A failure in any part will stop the fold-expand process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Helicopter emergency auxiliary folding and unfolding method
  • Helicopter emergency auxiliary folding and unfolding method
  • Helicopter emergency auxiliary folding and unfolding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] After the failure of the folding control system on the aircraft, disconnect the power supply of the electromagnetic valves such as the main folding valve on the aircraft, the main rotor folding, the main rotor deployment, the rotor brake, the tail rotor folding, and the tail rotor deployment, and connect the control wiring of the folding auxiliary equipment to the corresponding on-board The solenoid valve is connected and the device is powered on.

[0020] According to the folding requirements, put the main propeller in place (manually observe the positioning mark), and then pull the rotor brake handle to meet the emergency folding conditions.

[0021] Reference attached image 3 and 4 The flow chart schematic diagram, the method for helicopter emergency auxiliary folding and unfolding of the present invention, comprises the following steps:

[0022] Folding readiness check, hydraulic system supply pressure, turn the propeller so that the rotor is in the initial foldi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a helicopter emergency auxiliary folding and unfolding method, being characterized by comprising the following steps of examination of the folding preparation state: performing pressure supply by a hydraulic system, arranging propellers to make rotor wings position at the folding initial position and checking whether a rotor wing brake is positioned at the brake position; opening a tail rotor folding electromagnetic valve, starting folding the tail rotor to separate a tail rotor transmission shaft from a main transmission shaft, closing the tail rotor folding electromagnetic valve and stopping folding of the tail rotor; opening a main propeller folding electromagnetic valve, starting folding main propellers to make the main propellers to be folded to the mechanical limit position, closing the main propeller folding electromagnetic valve and stopping folding of the main propellers; starting the tail rotor folding electromagnetic valve, starting folding the tail rotor again to make the tail rotor to be folded to the mechanical limit position, closing the tail rotor folding electromagnetic valve and stopping folding of the tail rotor; completing the folding.

Description

technical field [0001] The invention belongs to the folding auxiliary control technology, and relates to a method for emergency auxiliary folding and unfolding of a helicopter. Background technique [0002] In order to comprehensively protect the shipboard helicopter when the control function of the folding electrical control system fails, it is necessary to manually press the emergency pressure supply buttons of each solenoid valve to realize emergency folding / unfolding control. [0003] The invention is used to realize the power supply to each electromagnetic valve, gradually control the action of the corresponding electromagnetic valve according to the folding and unfolding process, realize the folding / unfolding function, and ensure the smooth progress of the folding / unfolding process of the helicopter. [0004] Under normal circumstances, the rotor folding process can refer to the attached figure 1 , the rotor deployment process can refer to the attached figure 2 . T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/50
Inventor 廖龙华王春明白杰计宇郭世旭
Owner JIANGXI CHANGHE AVIATION IND