For the purpose of safety, test stands are usually needed for testing unmanned aerial vehicles (UAVs), especially in the early test stage. Although a test stand can prevent the tested vehicle from flying away or crashing, it adds extra burden to the vehicle due to the weight of its moving mechanism. This can be a major problem for micro aerial vehicles (MAVs) because of their tiny lifting or payload capability. This paper presents an innovative solution to this problem by designing a passive gravity balanced test stand. The stand is capable of completely compensating its own weight, so that the tested vehicle will not have the extra burden from the weight of the test stand. To verify the feasibility of the design, a simulation study has been conducted, which demonstrated the benefits of the new design.

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