Large aircraft lateral gust moderating method

An aircraft and gust technology, applied in the field of flight control, can solve the problems that the actuator bandwidth is difficult to meet the gust mitigation, and the gust mitigation effect is not obvious.

Active Publication Date: 2014-03-12
中国航空工业集团有限公司
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  • Abstract
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Problems solved by technology

[0005] Its disadvantages are: due to the rapid change of the gust speed and the measurement itself has a certain delay, the usual actuator bandwidth is difficult to meet the demand for gust mitigation, so the gust mitigation effect is not obvious

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Embodiment Construction

[0053] The present invention will be described in further detail below. A method for mitigating lateral gusts of large aircraft. A light radar sensor is installed on the aircraft fuselage. The light radar sensor can measure the gust disturbance 50m in front of the aircraft, provide the aircraft with a response time of 300ms, and place a 10% chord line on the vertical tail of the aircraft. A differential pressure sensor is installed at the position; suppose the measured value of the front gust speed is V1, the unit is m / s. The gust speed on the left side is positive; it is characterized in that the steps for side gust mitigation are as follows:

[0054] 1. Calculate the sideslip angle Δβ caused by the front gust:

[0055] Δβ = tan - 1 V 1 V 2 * 57.3 . . ...

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Abstract

The invention belongs to flight control technology, and relates to improvement on a large aircraft lateral gust mitigating method, which is characterized by comprising the steps of calculating a sideslip angle Delta Beta generated by front gusts, calculating a rudder compensation instruction Rudc_f1, calculating a rudder correction instruction Rudc_f2, calculating a gust advanced restrain rudder instruction Rudc_f, calculating a gust advanced restrain aileron instruction Ailc_f, calculating a differential pressure sideslip angle Beta f, calculating a corrected sideslip angle Beta fc, calculating a high-frequency sideslip angle, calculating a low-frequency sideslip angle, calculating a final sideslip angle Beta c, calculating an optimal control rudder instruction Rudc_p, calculating an optimal control aileron instruction Ailc_p, determining a rudder comprehensive instruction Rudc1, determining a rudder input instruction Rudc, calculating an aileron comprehensive instruction Ailc1 and calculating aileron input instruction Ailc. The improved large aircraft lateral gust moderating method, disclosed by the invention, enhances the effect of gust moderating and improves comfort for passengers.

Description

technical field [0001] The invention belongs to the flight control technology and relates to the improvement of a method for alleviating lateral gusts of large aircraft. Background technique [0002] The so-called lateral gust mitigation of large aircraft is an active control technology, which refers to controlling the deflection of control surfaces such as rudder and ailerons to reduce the aerodynamic load of the lateral gust on the vertical tail when the lateral gust comes, and reduce the aircraft's gust effect. Horizontal disturbance response improves passenger ride comfort. The steps of a current method for mitigating lateral gusts of large aircraft can be found in the US patent "Apparatus and method for reducing aircraft loads resulting from atmospheric turbulence and gusts", (US5,669,582A), the main steps of which are: [0003] (1) Use the pressure difference sensor to feel the vertical tail pressure difference when the gust is acting; [0004] (2) Compensate and cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C13/16G05D1/08
Inventor 孙逊樊战旗王敏文李佳魏文领
Owner 中国航空工业集团有限公司
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