Ultrahigh-temperature wind tunnel erosion testing system

An ultrahigh-temperature wind tunnel erosion testing system, comprising a fuel system, an erosion system, an erosion spray gun, a test piece fixture and a testing device, wherein the erosion spray gun is connected with the fuel system and the erosion system respectively;

• the erosion spray gun is arranged on a lifting and rotating mechanism;
• the test piece fixture is arranged on one side of the lifting and rotating mechanism and is opposite to a nozzle of the erosion spray gun;
• the testing device is connected with the test piece fixture;
• the lifting and rotating mechanism comprises a base and a rotary bracket fixed on the base;
• an outer side of the rotary bracket is sleeved with a supporting nut, a supporting spring, a guide sleeve and a transition sleeve in sequence from bottom to top;
• the supporting nut and the transition sleeve are both in threaded connection with the rotary bracket;
• the supporting spring and the guide sleeve are in sliding fit with the rotary bracket;
• a cantilever supporting plate is fixed on the guide sleeve;
• and the erosion spray gun is fixed on the cantilever supporting plate.