Novel water surface aircraft water load testing device

Abstract

The invention discloses a novel water surface aircraft water load testing device. The novel water surface aircraft water load testing device comprises a water surface aircraft water load testing device body, wherein the water surface aircraft water load testing device body comprises a supporting connection beam (3), a front and rear supporting connection assembly, a lifting mechanism, a left and right supporting connection assembly and a group of linear bearing guide mechanisms; the supporting connection beam (3) is arranged in the middle of two box girders of a central testing bridge (1); and the front and rear supporting connection assembly is composed of a front supporting connection rod (30), a front supporting base (4), a front supporting threaded handle (3), a rear supporting connection rod (6) and a rear supporting threaded handle (7). According to the novel water surface aircraft water load testing device, lifting systems are capable of dual lifting, and are simple in installation and disassembly; the novel water surface aircraft water load testing device can realize 6 degree-of-freedom non-interference water touching and sliding, and is capable of more realistic simulation; linear bearings are adopted for vertical guidance, thereby improving the precision of vertical guidance; and the pitching and rolling gestures of a test piece are simple to adjust, and the test piece is easy to operate.

Description

technical field [0001] The invention relates to the field of hydrodynamic tests of amphibious aircraft, seaplanes, etc., in particular to a novel water load test device for amphibious aircraft. Background technique [0002] With the improvement of the range of use of water surface aircraft, the requirements for wave resistance are gradually increased, which puts forward higher requirements for the structural design and strength check of water surface aircraft. In order to obtain a more accurate water load of the water surface vehicle for structural design and strength check, the scaled model test of the water load pool of the water surface vehicle is mainly used at present. [0003] At present, the water load test device used in China has a restrictive effect on the model during the test process, which has a great impact on the test data, mainly in the following aspects: [0004] 1. During the test, the test piece is constrained by 4 directions, which cannot truly simulate ...

AI Technical Summary

Problems solved by technology

[0004] 1. During the test, the test piece is constrained by 4 directions, which cannot truly simulate the actual situation

[0005] The existing water load test device for surface aircraft has heading and lateral constraints on the test piece during the test process. Only the moment when the test piece enters the water is in an unrestrained state, and the data obtained from the test is only valid at the moment of entering the water. Only the data at the moment of entering the water can be used, and there is no simulation for the sliding and wave impact of the test piece after entering the water, which cannot meet the needs of the unpowered model pool test of the water load of the surface aircraft

[0006] 2. Relying on adjustable pulleys for guidance, the vertical movement accuracy is not high

[0007] The existing water load test device for water surface aircraft is guided by a guide mechanism composed of adjustable pulleys. In order to ensure smooth movement, the gap will be large during the adjustment of the pulleys, resulting in low vertical accuracy when the test piece is put into the test. , there will be an influence of horizontal motion on the vertical motion of the test piece

[0008] 3. The adjustment of the attitude angle of the test piece is complicated and will change during the movement

[0009] The existing water load test device for water surface aircraft uses steel wire ropes with adjustable lengths at the front and rear to realize the adjustment of the pitching attitude angle of the model. Since the steel wire ropes are softly connected, affected by air resistance during the operation of the test trailer, the attitude angle of the model It will change and cannot truly reflect the actual water landing process. At the same time, there are no restrictions on the left and right wings of the aircraft, and roll phenomenon will also occur during the movement

[0010] 4. The test device has an impact on the test piece during the test

[0011] The existing water load test device for water surface aircraft needs to limit the forward and backward movement of the test piece after the test piece enters the water. It is inconsistent with the water entry of the actual test piece, which will affect the water entry and subsequent sliding of the test piece

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