The plane rotor brake and aircraft wheel brake need brake performance test,the moment of inertia in the brake test bench in needed for simulation. Based on their universality, the drum suitable for two types of test was designed,the parts were reasonable combinated, sharing a shaft and the power, through the two drum clutch meet different demand for inertia simulation.It can be used for rotor brake braking performance test,at the same time it can compatible with the dynamic performance test of light aircraft wheel brake device. The device was designed to meet various test conditions.Through the finite element strength analysis and dynamic performance analysis,it meets the design requirements.The test proves that the drum wheel of the test bed is convenient to clutch,reliable and stable in all kinds of tests.