Method for determining positions of wing spars

Abstract

The invention discloses a method for determining the positions of wing spars. The method includes the first step of analyzing and calculating the flying loads of a wing, the second step of designing the flexural and torsional center line position, and the third step of determining the positions of the wing bars. According to the method, the thought that the positions of the wing spars is matched with the flexural and torsional center line and the loads, the flexural and torsional center line position can be rapidly determined according to the characteristic that the wing bears the loads in the initial stage of the design, the determination of the positions of the wing spars can then be completed, the positions of the wing spars of the wing can be matched with the flexural and torsional center line position, the flexural and torsional center line position can be matched with the loads, and therefore the aim of enabling the position of the wing spars, the flexural and torsional center line position and the loads to be matched is achieved; the method provides powerful scientific evidence for the subsequent structural design of the wing; the method for determining the positions of the wing spars is novel, clear in thought, practicable in operation, high in universality and capable of being popularized and applied to the structural design of the double-spar wing with the high span chord ratio.

Description

technical field [0001] The invention belongs to the technical field of aerospace vehicle structure design, and in particular relates to a method for determining the position of a wing spar. Background technique [0002] In the design of aircraft wing structure, the position design of wing spar occupies a very important position. The specific position of the wing spar has a great influence on the stiffness of the structure, which also has an important influence on the force transmission characteristics, vibration characteristics and structural deformation of the wing. If the position of the wing spar is unreasonable, there will be a big difference in the transmission and distribution of the internal force of the wing, and the wing may also have harmful deformation, and even vibration and aeroelasticity problems. [0003] In the previous wing structure design, the structural position and size were first designed according to the design experience, and the analysis and calcula...

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Problems solved by technology

Such a design method will inevitably lead to a long design cycle, high expenditure, many design problems, and ha

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