Design method for vacuumizing pipeline of aircraft fuel test bed

Abstract

The invention discloses a design method for a vacuumizing pipeline of an aircraft fuel test bed. The method comprises a fuel tank mounting platform, a support frame, a pitching rotating shaft, a rolling rotating shaft and a vacuumizing pipeline, wherein the pitching rotating shaft is perpendicular to the rolling rotating shaft, the rolling rotating shaft is located between an upper end of the support frame and the fuel tank mounting platform, and the pitching rotating shaft is located between a lower end of the support frame and a foundation. Layout design of a vacuumizing pipeline is achieved through rotating joints, two rotating joints are connected through a steel pipe, a rotating shaft of one rotating joint is coaxial with a pitching shaft of the test bed, and a rotating shaft of the other rotating joint is coaxial with a transverse rolling shaft of the test bed. The design mode ensures that the vacuum pipeline does not interfere with two free rotations of pitching and rolling of the test bed; and the situation that a rubber pipe type vacuum pipeline is sucked and held down is also avoided.

Description

technical field [0001] The application relates to the design technology of an aircraft fuel test bench, in particular to a design method for a vacuum pipeline of an aircraft fuel test bench. Background technique [0002] The fuel test bench is a test platform for the ground simulation test of the aircraft fuel system. It has two degrees of freedom rotation functions of pitch and roll, and has the compound rotation function of pitch / roll. At the same time, the test piece is required to have the function of being vacuumed. Therefore, the fuel oil test bench should design a vacuum pipeline to realize the vacuum function of the test piece under the premise of not interfering with the pitch and roll rotation of the fuel oil test bench. [0003] In order to simulate the environmental pressure at the flight altitude of the fuel test bench, the test bench must be designed with a vacuum pipeline, which meets the requirements of high environmental simulation. Usually, the vacuum pipe...

AI Technical Summary

Problems solved by technology

Usually, the vacuum pipeline is realized by rubber hose, which can realize the pumping requirements of the system under test without interfering with the rotation of the bench. The main disadvantage of this form is that the rubber hose is easy to be sucked and damaged.

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