China tests coal-fired hypersonic engine

China continues to develop an engine for aircraft that will be able to move on

In one of the experiments, scientists tested the operation of an engine on coal.

What is known

Specialists used coal powder and vaporsethylene to start a series of detonations. Scientists have empirically found that the speed of the shock wave in such an engine is about six times the speed of sound and is 2000 m / s.

The tests were conducted at Nanjing University of Scienceand technologies. Specialists performed tests in a wide temperature range with a lack of oxygen and in conditions of its excess. Successful completion of the tests means that the coal-powder and ethylene detonation hypersonic engine can be used in vehicles to fly at different heights and speeds.

It is assumed that a hypersonic aircraft will be able totake off and land in normal airfield conditions at low speed. In the case of other types of hypersonic engines, this task is practically unrealizable.