A small disturbance high-speed ice ejection test device and method with multi-stage transmission

Abstract

The invention belongs to the technical field of ice breaking, and in particular relates to a multi-stage transmission small disturbance high-speed ice ejection test device and method. The present invention adopts a multi-stage transmission mode, firstly uses high-pressure gas to accelerate the impact projectile, and then instantaneously transfers the kinetic energy of the impact projectile to the test projectile through the energy conversion system, so as to realize the spatial difference between the impact projectile acceleration process and the test projectile launch process. Separation can not only effectively avoid the disturbance of the water body and the ice plate caused by the direct accelerated test projectile method such as high-pressure gas and mechanical ejection, but also allow a large expansion space for the length of the acceleration section, which can significantly improve the exit speed of the test projectile. The invention can flexibly control parameters such as the projectile ejection depth, ejection speed, and the shape and size of the projectile and the ice plate during the test process, which is beneficial to carry out the multi-condition test of high-speed projectile impact ice breaking under ice.

Description

technical field [0001] The invention belongs to the technical field of ice breaking, and in particular relates to a multi-stage transmission small disturbance high-speed ice ejection test device and method. Background technique [0002] The Arctic region is the regional center of Asia, Europe and North America, and the distance from the pole to the major countries in the three continents is much shorter than other regions. At the same time, the sea surface in the Arctic region is covered with ice and snow all the year round, and the underwater vehicle is protected by the vast sea ice when navigating in the polar ice region. Therefore, it is of great significance to study the trans-media motion of underwater structures rapidly breaking through the ice layer from under the ice area. [0003] When the underwater vehicle needs to release ice in the polar ice area, it usually floats to break the ice surface first, and then cleans the upper surface of the underwater vehicle and t...

AI Technical Summary

Problems solved by technology

However, the cross-medium process of the high-speed impact of the projectile under the ice to break the ice involves a complex ice-water-structure coupling problem, and the action process is extremely complicated.

At this stage, there is no test device for simulating the high-speed impact of ice-breaking projectiles under ice

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