Multi-load unmanned aerial vehicle engine dynamometer

The invention provides a multi-load unmanned aerial vehicle engine dynamometer, which comprises a test bench, a dynamometer, a tension test device and a torsion test device, the dynamometer, the tension test device and the torsion test device are mounted on the test bench, an engine connecting shaft is mounted at the output shaft end of the dynamometer, and the engine connecting shaft is rotatably mounted on a supporting seat on the test bench; the tension testing device comprises a first rigid body assembly, a second rigid body assembly and a tension sensor connected with the second rigid body assembly; the torsion testing device comprises a torsion arm fixed to the first rigid body assembly and a torsion sensor connected with the torsion arm. The test system provided by the invention is suitable for static or dynamic tension and thrust tests of unmanned aerial vehicles and model airplane power systems, a propeller can simultaneously measure data such as tension, power consumption and efficiency, motivator p