コールドガスジェットを用いた バネ吊下式6自由度スラストスタンドの性能評価

抄録

One-degree-of-freedom (1 DOF) thrust stands, which measure only one direction of thrust, have been mainly used for the evaluation of propulsion systems in microspacecraft. Since actual spacecraft may generate an unintentional thrust vector and a torque vector, there has been previous research on a magnetic levitation thrust stand with 6 DOF. However, there is a limit to the weight that could be levitated. In the 6 DOF thrust stand of this study, the weight limit was relaxed by suspending the spacecraft mounting plate with 3 springs. The simple cold gas jet module was used to evaluate its performance by measuring all forces and torques in 6 directions. As a result of the experiment, the measurement uncertainties of the thrust stand were evaluated as 0.520mN force in the main thrust direction, 0.221mN force in the transverse direction, and 0.289mN・m torque. The main thrust was measured at 43.5mN, which was in good agreement with the theoretical value.