High-lift device optimum design method taking motion locus into account

A technology of increasing the lift device and motion trajectory, which is applied in the field of transport aircraft, and can solve problems such as difficulty in obtaining a satisfactory take-off configuration, increasing the complexity and size of the motion mechanism, and increasing the size of the rectification device of the motion mechanism, etc.
CN104354875AActive Publication Date: 2015-02-18CHINA ACAD OF AEROSPACE AERODYNAMICS
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHINA ACAD OF AEROSPACE AERODYNAMICS
Publication Date
2015-02-18

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Abstract

The invention discloses a high-lift device optimum design method taking a motion locus into account. The method comprises the concrete steps as follows: 1. conducting a two-dimensional high-lift device aerodynamic configuration design on the basis of a two-dimensional airfoil profile; 2. conducting a two-dimensional motion mechanism motion locus design; 3. obtaining the aerodynamic configuration in a take-off state, the aerodynamic configuration in a landing state and the slot parameters of the airfoil profile; 4. computing the two-dimensional aerodynamic force of a high-lift device; 5. optimizing the slot parameters of the high-lift device, repeating Step 2 to Step 4, and optimizing the geometrical parameters of a motion mechanism meeting take-off and landing aerodynamic performance requirements as well as the drift angle of the airfoil profile until the optimal results are obtained. According to the method, the slot parameters of the take-off configuration and the landing configuration are obtained by simulating the whole motion locus curve of the motion mechanism of the high-lift device, and the synchronous optimum design of the take-off configuration and the landing configuration of the high-lift device can be realized on the basis of ensuring locus realization.
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Description

technical field

[0001] The invention relates to an optimal design method of a high-lift device, in particular to an optimal design method of a high-lift device considering a motion trajectory, and belongs to the technical field of transport aircraft. Background technique

[0002] The performance of the high-lift device is one of the important indicators to measure the design level of a civil airliner, which is related to the safety, economy and environmental protection of the aircraft. The design of the high-lift device requires obtaining the required lift in the simplest form possible, the take-off configuration requires the resistance to be as small as possible to meet the requirements of the take-off field, and the landing configuration requires high lift and high resistance.

[0003] The high-lift device needs to be deflected to the take-off and landing configuration under the actuation of the kinematic mechanism. The takeoff configuration and the landing configuration ...

Claims

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