Research on Ground Simulation Technology of Air Rudder Buffeting Load
An air rudder of solid rocket was subjected to buffeting load during the hanging flight which gave rise to abnormal deflection.It is necessary to identify the cause through ground testing,and investigate the adaptability under buffeting load.Since the fault was not reappeared by traditional ground test method,a new technique of buffeting load ground simulation test was proposed.It can identify the buffeting load of the rudder surface in the hanging flight,and establish the ground simulation test conditions based on the optimization algorithm.The buffeting load was applied by the combined excitation method of multiple exciters.This test technology successfully realized the product fault recurrence in the ground test,and greatly improved the authenticity of the test assessment.It can be extended to other rudder products in the ground test under aerodynamic load.
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