Development and Ground Tests of a 100-Millinewton Hydrogen Peroxide Monopropellant Microthruster

3, with a throat diameter of 0.5-mm packing, with silver flake as the catalyst, and 92% hydrogen peroxide is adopted with a flow rate of 0:18 g=s. Measurements of the ignition delay at different catalyst-bed preheating temperatures are compared to define the operating parameters for practical applications. Test results show that the hydrogen peroxide microthruster gives a good c efficiency and a short ignition delay compared with the performance of large-scale systems. Under atmospheric pressure at sea level, the developed microthruster can produce 182 mN with a specific impulse of 101 s.