The invention relates to an S-shaped flow field embedded type aircraft fuel tank air duct which meets the requirement for small-interval installation and use of wing fuel tanks. Comprising an air entraining opening, a convergence resistance reduction channel and an air outlet channel, the air entraining opening comprises a long inclined plate, a diffusion side wall, a lip opening, an outer turning wall and an inner turning wall, the long inclined plate gradually expands from the initial end of air inlet till the two sides are parallel, the two sides of the long inclined plate are connected with the diffusion side wall, and the tail end of the long inclined plate is connected with the inner turning wall; the outer contour of the section of the lip is in an oval arc shape and is connected with the outer turning wall. The starting end of the inner turning wall is flush with the joint of the outer turning wall and the lip, and the tail end of the inner turning wall is flush with the tail end of the outer turning wall; the convergent resistance reduction channel comprises a rectangular circular convergent funnel and a circular transition channel, the cross section of one end of the rectangular circular convergent funnel is rectangular, the other end of the rectangular circular convergent funnel converges to form a circular cross section, the circular transition channel is connected to the circular cross section end of the rectangular circular convergent funnel, and the air outlet channel is L-shaped. The invention has the advantages of simple manufacture and good pneumatic performance, and is suitable for small-spacing multi-occasion installation and use.
本发明涉及一种S型流场埋入式飞机油箱通气道,解决了机翼油箱小间距安装使用要求的问题。包括引气口、收敛减阻通道和出气道,引气口包括长斜板、扩散侧壁、唇口、外拐壁和内拐壁,长斜板从进气的初始端渐变扩张,直到两侧平行,长斜板两侧与扩散侧壁连接,末端与内拐壁连接;唇口截面外轮廓呈椭圆弧线形状,与外拐壁连接;内拐壁起始端同外拐壁与唇口连接处平齐,内拐壁末端与外拐壁末端平齐;收敛减阻通道包括长方圆形收敛漏斗和圆形过度通道,长方圆形收敛漏斗一端横截面呈长方形,另一端收敛形成圆形横截面,圆形过度通道连接在长方圆形收敛漏斗圆形横截面端,出气道呈L型。本发明制作简单、气动性能好,适用于小间距多场合安装使用。
S-shaped flow field embedded type aircraft fuel tank air duct
一种S型流场埋入式飞机油箱通气道
2024-11-12
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
Aircraft fuel tank access cover and an aircraft fuel tank
European Patent Office | 2015
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