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Low-resistance and high-efficiency subsonic speed air inlet channel

A low-resistance, high-efficiency, air-intake technology, which is applied to the combustion and drag reduction of the air intake of the power unit, can solve the problems of aircraft aerodynamic resistance increase, weight increase and structural complexity, etc., and achieve the effect of reducing resistance

Pending Publication Date: 2022-08-05
上海甘石星经智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, since the boundary layer partition increases the windward area of ​​the aircraft, it will increase the aerodynamic drag of the aircraft and increase the weight and structural complexity

Method used

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  • Low-resistance and high-efficiency subsonic speed air inlet channel
  • Low-resistance and high-efficiency subsonic speed air inlet channel
  • Low-resistance and high-efficiency subsonic speed air inlet channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] like Figure 1-Figure 4 A low-resistance and high-efficiency subsonic intake port is shown, the intake port face 1 at the front end of the intake port, the intake port inner channel 2 extending backward from the intake port port face 1, surrounding the intake port port face 1. The intake port lip cover 3 is the fuselage 4 connected with the intake port port face 1 and the intake port lip cover 3 . The shape of the air inlet surface 1 is determined according to the shape of the fuselage 4 , and it is required to achieve the effect of integration and fusion with the fuselage 4 . The inner passage 2 of the air intake duct includes an inner pipe which is bent backward from the inlet surface 1 of the air intake duct and extends toward the interior of the fuselage, and the rear end of the inner passage 2 of the air intake duct is the outlet surface of the air intake duct.

[0019] Among them, the lip cover 3 surrounds the air inlet surface 1 and is smoothly connected with th...

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Abstract

The invention discloses a low-resistance efficient subsonic speed air inlet channel which comprises an air inlet channel opening face located at the front end of the air inlet channel and an air inlet channel inner channel extending backwards from the air inlet channel opening face, an air inlet channel lip cover is arranged outside the air inlet channel opening face in a surrounding mode, and the air inlet channel opening face and the air inlet channel lip cover are connected with a machine body. The air inlet channel structure is different from a conventional subsonic air inlet channel, no boundary layer separation channel and no protruding bulge exist in front of the opening of the air inlet channel, through integrated fusion of the sweepback sharp lip and the fuselage, the windward area of an aircraft can be reduced while the high total pressure recovery coefficient and the low flow field distortion index of the air inlet channel are kept, and the air inlet channel is more compact in structure. Therefore, resistance is reduced.

Description

technical field [0001] The invention relates to the field of aircraft design, in particular to a low-resistance and high-efficiency subsonic air intake. Background technique [0002] The problem of aircraft drag reduction has always been the focus of development in the aerospace field. As the head-end component of the engine, the design and development of the intake port will generally start from the perspective of drag reduction. As the "airway" of the air-breathing propulsion system, the intake port is responsible for capturing, compressing, and rectifying the airflow, so it is one of the components that ensure the normal operation of the engine. Its design features and operating characteristics have a significant impact on the working efficiency of the engine. Subsonic aircraft is the most widely used type of air-breathing aircraft, and the intake ports of its power system generally have pitot intake ports, S-curve intake ports, and buried intake ports. Considering fact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D33/02
CPCB64D33/02B64D2033/0226B64D2033/0253Y02T50/10
Inventor 张洪雷周瑜林景张雅帅张文浩李洋鹏寇倍豪王礼洋
Owner 上海甘石星经智能科技有限公司
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