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Adjustable helicopter front center-of-gravity counterweight device

A technology for counterweight devices and helicopters, which is applied to rotorcraft, motor vehicles, aircraft parts, etc. It can solve the problems of inconvenient fixation, non-adjustable counterweight weight, and low counterweight effect of the front center of gravity, so as to enhance the counterweight effect and balance The effect of high heavy duty and meeting the requirements of static strength

Inactive Publication Date: 2019-01-18
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] By designing an adjustable front center of gravity counterweight device, the counterweight effect on the front center of gravity of the helicopter is enhanced, the device is easy to fix, does not affect the aerodynamic shape of the helicopter, and can realize flexible adjustment of the counterweight weight, thereby solving the problems existing in the existing technical solutions The counterweight effect of the front center of gravity is low, it is inconvenient to fix, and the weight of the counterweight cannot be adjusted, etc., which meets the requirements of the helicopter's front center of gravity for the flight test project

Method used

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  • Adjustable helicopter front center-of-gravity counterweight device
  • Adjustable helicopter front center-of-gravity counterweight device
  • Adjustable helicopter front center-of-gravity counterweight device

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Experimental program
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Embodiment Construction

[0022] The present invention is applied on the AC312E helicopter.

[0023] When installing, first fix the fixed weight plate 1 on the front panel of the machine head equipment rack with fasteners, then pass the long bolts 2 on the corresponding mounting holes of the fixed weight plate 1, and then place the grooved weight plate in turn. 3. The movable counterweight plate 4 is connected to the long bolt 2 through the installation hole, and finally tightened and prevented from loosening with fasteners. When disassembling, disassemble and disassemble in reverse order of the installation process.

[0024] When adjusting the counterweight, the connection of the fixed counterweight plate 1 remains unchanged, and the small adjustment sleeve 5, the middle adjustment sleeve 6, and the large adjustment sleeve 7 or their combination are used in multiples of the number of long bolts 2. Replace the active counterweight plate 4 and the groove counterweight plate 3 of the same thickness quan...

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Abstract

The invention belongs to the technical field of helicopter structures and relates to an adjustable helicopter front center-of-gravity counterweight device, which comprises a fixed counterweight plate,a long bolt, a groove counterweight plate and a movable counterweight plate; As that helicopter head equipment rack is used as a structural support and is installed inside the helicopter, the helicopter head equipment rack occupies a relatively forward position under the condition that the aerodynamic shape of the helicopter is not affected, and the helicopter head equipment rack has high counterweight effect on the front center of gravity of the helicopter; Adopting machined steel counterweight plate and steel adjusting sleeve as main weight adjusting components, the flexible adjustment of counterweight can be realized by adjusting the number of assembled heavy plate and adjusting sleeve. The components of the device are connected by threads, which is convenient to disassemble and assemble. The design of the device and connection scheme can meet the requirements of static strength under flight load.

Description

technical field [0001] The invention belongs to the technical field of helicopter structural parts, and relates to an adjustable center-of-gravity counterweight device for a helicopter. Background technique [0002] During the helicopter test flight, in order to meet the requirements of the test flight project for the helicopter's center of gravity, it is necessary to install corresponding counterweights at the appropriate positions of the helicopter to achieve the purpose of adjusting the helicopter's center of gravity. Existing helicopter counterweight device mainly is the counterweight block of lead shot bag, fixed weight etc. The lead shot bags are superimposed on demand and are usually fixed with mooring nets; the fixed weight counterweights are mainly installed through bolt connections, and are usually installed at the frame beam of the cockpit structure. The counterweight effect on the front center of gravity is low and inconvenient to fix. Counterweight weight can n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D47/00B64C27/04
CPCB64C27/04B64D47/00
Inventor 张可心宋瑶王昆仑牟晓伟
Owner HARBIN
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