Negative tension protection method of propeller engine

A negative tension, propeller technology, applied in aircraft power plant, aircraft parts, transportation and packaging, etc., to achieve the effect of reducing work intensity and improving stable maneuverability

Active Publication Date: 2016-04-20
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an automatic propeller engine and its negative tension protection device and negative tension protection method for providing protection against the situation that the propeller blade angle does not match the flight attitude and produces negative tension that hinders the aircraft from advancing.

Method used

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  • Negative tension protection method of propeller engine

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] Such as figure 1 As shown, the negative tension protection device of the propeller engine according to the embodiment of the present invention includes a throttle opening detection device, a negative tension detection device and a controller. The throttle opening detecting device is used for detecting the throttle opening of the propeller engine and generating a throttle opening signal. The negative pull detection device is used to detect the negative pull of the propeller and generate a force signal. The controller is electrically connected with the throttle opening detection device and the negative tension detection device to receive the throttle opening signal and the force signal, ...

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Abstract

The invention provides a propeller engine and a negative tension protection device and method thereof. The propeller engine comprises an accelerator opening degree detecting device for detecting accelerator opening degree of the propeller engine and generating an accelerator opening degree signal; a negative tension detecting device for detecting the negative tension of the propeller and generating a force signal; a controller electrically connected with the accelerator opening degree detecting device and the negative tension detecting device to receive the accelerator opening degree signal and the force signal to generate a control signal according to the accelerator opening degree signal and the force signal. The controller is electrically connected with a feathering pump of the propeller engine, the feathering pump is used for controlling the propeller to conduct feathering, and the controller controls the feathering pump according to the control signal. Automation for providing protection under the condition of negative tension which hinders advancing of an air plane and is caused by the fact that propeller blade angles are not matched with flight attitude is achieved.

Description

technical field [0001] The invention relates to the field of propeller engines, and more particularly, to a propeller engine, a negative tension protection device and a negative tension protection method thereof. Background technique [0002] During the flight of an aircraft driven by a propeller engine, when the angle of the propeller blades does not match the flight attitude, a negative pull force will occur that hinders the aircraft from moving forward. When the negative pulling force produced by the propeller exceeds a certain value, the stability of the aircraft will deteriorate, which will bring great difficulties to the crew's control. [0003] At present, the protective measures taken by propeller engines of various types include over-rotation protection shutdown, over-temperature protection shutdown and other limited methods. In the prior art, no protective parking measures have been taken for the situation where the propeller blade angle does not match the flight ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D31/00
Inventor 李琼谢宾李建英方春娇盛柏林
Owner CHINA HANGFA SOUTH IND CO LTD
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