Abstract:

The test mechanism of dynamic stability derivative with high angles of attack and its measuring system are presented together with typical test results of a Standard Dynamic Model(SDM) in 1.2m transonic wind tunnel in high speed institute of CARDC.The test results are closely related to published abroad data, the results of dynamic stability derivative depend nonlinearly on Mach number and angle of attack, and the effect of reduced frequency is less prominent.The repeatability errors of the balance and measuring system are improved.

Key words: standard dynamic model(SDM), dynamic stability derivative, wind tunnel test, wind tunnel test technique