Ground simulation device and simulation method for jet disturbance effect of rocket engine

• Main Authors: QIU HUACHENG, YANG YANGUANG, SHI YILEI, LONG ZHENGYI, LI JIE
• Format: Patent
• Language: Chinese; English
• Published: 07.01.2022
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a ground simulation device and simulation method for a jet interference effect of a rocket engine. The ground simulation device comprises a special test model and a jet flow device. The ground simulation method comprises the following steps of: determining wind tunnel flow field parameters; determining a model scale; determining jet flow parameters; determining the mixing ratio of CF4/N2; preparing the ground before the test; filling CF4/N2 mixed gas and heating to a specified temperature; testing a wind tunnel, firstly starting the wind tunnel, opening a quick valve when a flow field is stable, spraying out mixed gas, and collecting balance force measurement data and a flow field display image; stopping the wind tunnel and closing jet flow; and performing data analysis on the jet interference effect of the rocket engine, and ending the test. According to the ground simulation method, a CF4 and N2 mixed gas distribution mode is adopted, thermal jet flow can be simulated, and technical