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Torque compensation for a helicopter

A helicopter and torque technology, which is applied in the direction of rotorcraft, motor vehicles, aircraft, etc., can solve the problems of rising manufacturing cost and weight increase, and achieve the effect of reducing noise and improving flow performance

Inactive Publication Date: 2013-04-17
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantage is that due to the addition of the shell, the weight increases and the manufacturing cost increases
Also, the size of this tail rotor is relatively small, but as a result more energy is required to compensate the torque

Method used

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  • Torque compensation for a helicopter
  • Torque compensation for a helicopter

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Experimental program
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Embodiment Construction

[0025] figure 1 A helicopter 100 is shown, which according to the invention is equipped with a cross-flow fan 200 . Helicopter 100 has a main rotor 110 for generating lift and / or traction for aircraft operation. During operation, that is to say during rotation of the main rotor 110 , it rotates about the axis of rotation RH and thus generates a torque as known. This torque, without corresponding compensation, would cause the fuselage 120 of the helicopter 100 to also rotate about the axis of rotation RH.

[0026] According to the invention, the torque compensation is not achieved by means of a tail rotor arranged on the tail boom 130 of the helicopter 100 , but by means of a cross-flow fan 200 . The cross-flow fan, for example, is characterized in that the airflow L generated by the fan is conveyed transversely, in particular perpendicularly, to the axis of rotation RQ of the fan 200 . Accordingly, the thrust caused by the air flow L is oriented transversely to the axis of ...

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PUM

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Abstract

The invention relates to compensation for the torque which is produced by the main rotor (110) of a helicopter (100). The apparatus according to the invention for torque compensation is intended for a helicopter whose main rotor rotates about a rotation axis (RH) during operation and thus produces a torque, which acts on the fuselage (120) of the helicopter and would cause it to rotate. The apparatus comprises a lateral flow fan (200) having a housing (210) and having a rotor (220) which is mounted in the housing, wherein the lateral flow fan is arranged on the tail boom (130) of the helicopter such that it produces a thrust effect (F) during operation which compensates for the torque of the main rotor.

Description

technical field [0001] The invention relates to the compensation of the torque generated by the main rotor of a helicopter. Background technique [0002] In helicopters, in order to compensate the torque, an axial fan in the form of a tail rotor is usually used to compensate the torque produced by the main rotor. Simultaneously, a thrust force is generated horizontally, that is to say at most perpendicular to the vertical axis, by the tail rotor mounted on the tail boom of the helicopter, in order to counteract the rotation of the fuselage about the vertical axis. [0003] Such a tail rotor is usually arranged exposed on the spar and thus constitutes a safety hazard for eg persons on the ground. In order to solve this problem and other shortcomings of the exposed tail rotor, a built-in tail rotor, a so-called ducted tail rotor, is proposed in DE102008015073A1, which can reduce safety risks and Reduces e.g. noise and vibration, as the wingtips are not exposed when they rota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/82
CPCB64C27/82B64C2027/8218B64C2027/8245B64C2027/8254
Inventor 奥利弗·海德
Owner SIEMENS AG