Modeling analysis of vibration for subminiature unmanned helicopter

The model analysis of vibration for subminiature unmanned helicopter is discussed. The software named CATIA is used to modeling and analysis for the subminiature unmanned helicopter. A vibration experiment is also engaged to amend the result of the analysis. Compare the result of vibration experiment with the data of CATIA modeling analysis; the values of nature frequency are accordant. From these results, it could be found that amplitudes of vibration on the bottom, main shaft and the upside of the helicopter are larger than other positions. For this reason, the frame of the helicopter has been strengthened, which improved the working condition of the sensors on the helicopter.