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Bump high lift device based on three-dimensional Coanda effect and design method thereof

A Coanda effect and lift-increasing device technology, which is applied in the field of bulging lift-increasing devices based on the three-dimensional Coanda effect, can solve the problems of high cost, complex wing mechanism, and inconvenient modification, and achieve low cost, excellent performance, Quick and easy modification

Pending Publication Date: 2022-04-26
太仓点石航空动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method changes the shape of the wing, the wing mechanism is complicated, the modification is inconvenient, and the cost is relatively high

Method used

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  • Bump high lift device based on three-dimensional Coanda effect and design method thereof
  • Bump high lift device based on three-dimensional Coanda effect and design method thereof
  • Bump high lift device based on three-dimensional Coanda effect and design method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a kind of bulge increasing device based on the three-dimensional Coanda effect includes a bulge 1 arranged at a certain position on the upper surface of the wing 4 and a high-speed exhaust gas source (not shown in the figure), and the high-speed exhaust gas source Used to generate a high-speed exhaust airflow blown to the upper surface of the wing 4, the profile of the bulge 1 changes the high-speed exhaust airflow into a three-dimensional flow with curved streamlines.

[0037] Taking the turboprop engine and its propeller as an example, the position of the bulge 1 relative to the plane 2 of the paddle disk and the axis 3 of the paddle disk is as follows: figure 1 shown.

[0038] Therefore, the prerequisite for the effective function of the bulge 1 is that the upper surface of the wing 4 must have the high-speed exhaust gas produced by the engine or other devices to flow through. Its high-speed exhaust can be the high-temperature exhaust gas...

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Abstract

The invention discloses a three-dimensional Coanda effect-based bump high-lift device, which comprises a bump arranged at a certain position on the upper surface of a wing and a high-speed exhaust gas source, the high-speed exhaust gas source comes from jet flow of an engine and is blown to the upper surface of the wing, more lift force is increased under the action of the bump, and the high-speed exhaust gas source is used for increasing the lift force of the wing. And the molded surfaces of the bumps change high-speed exhaust gas flow into streamline bent three-dimensional flow. Original uniform flow on the upper surface of the wing is changed into streamline bent three-dimensional flow through the bulges of the bulges, the high-speed action area of engine exhaust on the upper surface of the wing is increased, under the action of ejection, the lift force is obviously increased, and the structure is simple and the weight is light.

Description

technical field [0001] The invention belongs to the technical field of airflow control of aircraft, and in particular relates to a bulge-increasing device based on the three-dimensional Coanda effect and a design method thereof. Background technique [0002] With the development of science and technology and the improvement of actual demand, the requirements for short-distance take-off and landing of future aircraft are getting higher and higher. The short-distance take-off and landing capability endows the aircraft with the ability to take off and land on plateaus, islands, and mountainous areas, and has broad and considerable application prospects. Therefore develop a kind of simple in structure, light in weight, be suitable for existing aircraft refitting, increase the lift device with good lift performance imminently. [0003] At present, the use of flow control to achieve lift is the most common and hottest research direction. Among them, the Coanda effect is one of t...

Claims

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Application Information

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IPC IPC(8): B64C3/58
CPCB64C3/58
Inventor 赵运生丁建国代钰程青青陶冶科
Owner 太仓点石航空动力有限公司
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