Method for testing tower collision load of aerostat

Abstract

The invention discloses an aerostat tower collision load test method, which comprises the following steps of: manufacturing a scaling airbag test piece of a prototype aerostat airbag, and carrying out a tower collision load test experiment in a test environment; in the test, the internal pressure, the balancing weight and the falling height parameter of the shrinkage ratio air bag test piece are adjusted according to the test working condition, and the change rule of the impact load along with time under different initial conditions is measured; according to an energy conservation principle, deducing an equation relation between the impact load and the weight, the maximum deformation displacement and the transient speed before impact of the scaling airbag test piece on the basis of test data, and determining a function relation between the deformation displacement and the impact load of the scaling airbag test piece; and then the initial conditions of the prototype aerostat air bag are substituted, so that the tower collision load of the prototype aerostat air bag in the anchoring state is obtained. According to the method, the tower collision impact process is simulated by considering the energy absorption of the air bag on the basis of the test, and the calculation result of the tower collision load of the aerostat is more accurate by adopting the method.

Description

technical field [0001] The invention relates to the field of airships and tethered balloons, in particular to a method for testing the load of an aerostat hitting a tower. Background technique [0002] The aerostat is more and more favored by people because of its long-time empty and environmental protection features. Due to its huge size, the aerostat has to stay in the field for a long time; during the maintenance period, the aerostat is restrained by ground equipment such as mooring towers and anchor vehicles. Due to the change of the ground wind field and the elasticity of the airbag, it is inevitable There is a phenomenon that the airbag hits the mooring tower at a certain speed. However, the total mass of the aerostat is usually more than several tons, even if it hits the tower at a low speed, it will generate a large impact load. The magnitude of the impact load of the tower collision is directly related to the design of the mooring system, and even affects the moor...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a test method for aerostat collision tower load, which solves the problem that the existing method is too conservative in estimating the aerostat platform collision load; on the basis of satisfying structural safety, the structural weight can be reduced and manufacturing cost effects

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