High-lift device of air vehicle

a technology of air vehicle and high-lift device, which is applied in the direction of airflow influencers, wing adjustments, drag reduction, etc., can solve the problems of reducing the practical affecting the aerodynamic performance of the aircraft, and reducing the noise of the high-lift device. , to achieve the effect of reducing the aerodynamic noise radiated, increasing the weight of the fuselage, and degrading the practical performan

Active Publication Date: 2017-10-12
THE SOC OF JAPANESE AEROSPACE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Effectively reduces aerodynamic noise from high-lift devices without increasing the weight of the fuselage or degrading practical performance, maintaining aerodynamic characteristics during cruising.

Problems solved by technology

Under the circumstances, a high-lift device is regarded as one of major noise sources, particularly during landing.

Method used

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  • High-lift device of air vehicle
  • High-lift device of air vehicle
  • High-lift device of air vehicle

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

ading Edge Form

[0033]FIG. 3 is a plan view and a side view from the perspective of a tip end, showing the external appearance of the configuration of the flap body 11 of the high-lift device 3 according to Embodiment 1. The flap body 11 of FIG. 3 entirely has a rectangular shape which is elongated in the rightward and leftward direction (wingspan direction) when viewed from above. The tip end portion 11a in the wingspan direction is provided with a gap increasing section 20 formed by shortening its chord length. More specifically, a leading edge portion (hereinafter will be referred to as “tip end leading edge portion”) 21 of the tip end portion 11a of the flap body 11 is located rearward relative to a leading edge portion (hereinafter will be referred to as “body leading edge portion”) 12 of the remaining portion (portion other than the tip end portion 11a). In addition, the tip end portion 11a is smaller in chord direction dimension than a portion in the vicinity of the tip end po...

embodiment 2

Edge Upper Surface

[0053]FIG. 7 is a plan view and a side view from the perspective of a tip end, showing the external appearance of the configuration of the flap body 11 of the high-lift device 3 according to Embodiment 2. As in Embodiment 1, the flap body 11 of FIG. 7 entirely has a rectangular shape which is elongated in the rightward and leftward direction (wingspan direction) when viewed from above. The tip end portion 11a in the wingspan direction is provided with a gap increasing section 30 formed by depressing a portion of its upper portion.

[0054]More specifically, a recess 31 is formed on the upper portion of the leading edge portion (tip end leading edge portion) 21 of the tip end portion 11a of the flap body 11 such that the recess 31 has an upper surface 31a which is depressed relative to the upper surface 12a of the leading edge portion (body leading edge portion) 12 of the remaining portion (portion other than the tip end portion 11a). This recess 31 has a substantially...

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PUM

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Abstract

A high-lift device includes a flap body which is provided at a rear portion of a main wing which generates a lift for the air vehicle such that the flap body is deployed with respect to the main wing and stowed in the main wing and extends along a wingspan direction of the main wing; and a gap increasing section provided at an end portion of the flap body in an extending direction of the flap body, to increase a gap between the rear portion of the main wing and a front portion of the flap body in a state in which the flap body is deployed.

Description

[0001]This application is a divisional application of U.S. patent application Ser. No. 14 / 389,257, filed on Sep. 29, 2014, which is a national stage entry of PCT / JP2013 / 002174 filed on Mar. 29, 2013, which claims priority to JP 2012-077712 filed on Mar. 29, 2012. The disclosures of each of the above are hereby incorporated by reference in their entireties.TECHNICAL FIELD[0002]The present invention relates to a high-lift device which is provided in a trailing edge portion of a main wing of an air vehicle (aircraft) such that the high-lift device can be deployed with respect to and stowed in the main wing.BACKGROUND ART[0003]An air vehicle includes a high-lift device provided in a main wing. The high-lift device is stowed in the main wing during cruising and deployed with respect to the main wing during takeoff and landing. The high-lift device is an aerodynamic device for ensuring a lift (aerodynamic lift) during low-speed flight, and therefore is designed so that an emphasis is put ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B64C9/18B64C21/08B64C9/02B64C3/50
CPCB64C9/18B64C3/50B64C2230/14B64C9/02B64C21/08B64C2009/143Y02T50/10
InventorISOTANI, KAZUHIDEHAYAMA, KENJI
OwnerTHE SOC OF JAPANESE AEROSPACE