Rocket engine swing altitude simulation test rotating device

Abstract

The invention discloses a rocket engine swing altitude simulation test rotating device. The rocket engine swing altitude simulation test rotating device is composed of a base (1), a vertical shaft (2), a rotary table (3), rolling wheels (4), rolling wheel supports (5), a horizontal rotating motor (6), a horizontal rotating driving wheel (7), a horizontal rotating motor mounting base (8), pressingwheels (9), pressing wheel mounting bases (10), horizontal shaft bases (11), vertical rotating motor mounting bases (12), vertical rotating motors (13), vertical rotating driving wheels (14), horizontal shafts (15) and an engine mounting frame (16). The device is suitable for making an engine spray pipe aligned to a diffuser in the rocket engine swing altitude simulation test, and the pressure ina vacuum chamber is kept stable.

Description

technical field [0001] The invention relates to a rotating device, in particular to a rotating device applied to a rocket engine swing high-altitude simulation test. Background technique [0002] The working environment (pressure, temperature, air density, etc.) of rocket engines working at high altitudes and in space is different from that on the ground, so many conditions of engine operation, such as ignition, starting characteristics, thrust performance, etc., are also very different from those on the ground. In order to obtain the actual performance of the engine in the high-altitude environment, high-altitude simulation tests are required. The high-altitude simulation test of the engine is to create a high-altitude environment artificially on the ground, and place the engine or assembly in this environment for various tests. [0003] The engine high-altitude simulation test system mainly includes two types: "engine-diffuser system" and "engine-diffuser-extraction syste...

AI Technical Summary

Problems solved by technology

For the "engine-diffuser system" type test system, since the size of the inlet surface of the diffuser is close to the size of the outlet of the engine nozzle, the swing of the engine will prevent the gas flow from being completely collected by the diffuser, so that the vacuum chamber cannot meet the test requirements. A vacuum environment is required; for the "engine-diffuser-extraction system" test system, although a diffuser with a larger inlet size can be used to match the swing engine, the engine swing angle should not be too large (generally within 8 degrees) ), and the backflow caused by the change of the direction of the gas flow during the engine swing, the pressure fluctuation in the vacuum chamber, and the simulation environment parameters are unstable, which cannot meet the high-altitude simulation test requirements of the engine with a large swing angle (above 10 degrees)

[0008] To sum up, due to the limitations of the test conditions, the high-altitude simulation test of the swinging engine working at high altitudes before the flight often conducts the ignition test of the performance and reliability of the engine without swinging and the swinging test of the engine without ignition. not enough

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