Composite air inlet structure
A composite material and air intake technology, which is applied to the combustion of the air intake of the power plant, can solve the problems of difficult to guarantee the process quality of the butt joint, many defects in the butt joint, and difficult process, so as to reduce the difficulty of the process and make the layout quickly. , to ensure the effect of process quality
Inactive Publication Date: 2019-02-26
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
At the butt joints of vertical and horizontal ribs, if the skin and ribs are co-cured, the process is difficult and the workload is large; if the skin and ribs are bonded twice, the process quality of the joint is difficult to guarantee, and there are many defects at the joint
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[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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The invention discloses a composite air inlet structure, and belongs to the field of design of aircraft air inlets. The composite air inlet structure comprises an air inlet, transverse fillets, longitudinal fillets and square fillets; each transverse fillet comprises a first web plate and a first bottom plate and is in a T-shape integrally; each longitudinal fillet comprises a second web plate anda second bottom plate and is in a T-shape integrally; each longitudinal fillet encircles the air inlet through each first bottom plate, the adjacent longitudinal fillets are connected through a plurality of the transverse fillets; and the square fillets are arranged in a grid curved surface defined by the transverse fillets and the longitudinal fillets. Under the same structure strength, the number of the transverse fillets and the longitudinal fillets is reduced, the number of butt joint of the transverse fillets and the longitudinal fillets is reduced, the process difficulty is greatly reduced, the process quality is guaranteed, and meanwhile, the rapid distribution of the transverse fillets is realized by adopting a lap joint mode.
Description
technical field [0001] The invention belongs to the technical field of aircraft air inlet design, and in particular relates to a composite material air inlet structure. Background technique [0002] Early aircraft used propellers to provide propulsion power. The form of the air inlet was relatively simple, and it was difficult to attract our attention. As the aircraft entered the jet age, the structure of the air inlet became more and more complex, and the requirements for structural strength were also higher. become taller; [0003] The air inlet mainly bears the load in the direction of the normal surface of the skin, and the stiffness problem is mainly considered in the design. In order to ensure the rigidity, the structural form of the composite air intake generally adopts the structure of skin + vertical and horizontal ribs. For large cross-sectional air intakes, it faces the problem of too many longitudinal and horizontal ribs. At the butt joints of vertical and hori...
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Login to View More IPC IPC(8): B64D33/02
CPCB64D33/02
Inventor 纪小飞李宁杨成茂
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA