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Metal-CO2 Propulsion for Mars Missions: Current Status and Opportunities

“…Available experience in development of engines and reactors using powdered metal fuel [91][92][93][94][95][96][97] can be effectively applied to the metal-CO 2 propulsion system. This experience includes pneumatic feed systems for metal powders based on fluidization techniques.…”

“…IV), the similar difference between Mg and Al in oxide deposition is expected for stoichiometric mixtures with CO 2 , but may not occur for mixtures with higher CO 2 fractions. Figure 2 shows a schematic diagram of a pressurized reactor for Al powder combustion in air, developed by Malinin et al [96]. The metal powder feed system was based on the porous piston concept described previously.…”

“…Fig. 2 Schematic diagram of the experimental reactor: 1) metal powder feed system, 2) prechamber, 3) nozzle combustion chamber, 4-5) sampler for collecting dispersed oxides from two-phase hightemperature flow, 6) piston valve, 7) locking and regulating valve, 8) primary air distributor, 9) igniter, 10) secondary air distributor [96].…”