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Physical design: It collects the lunar regolith by its four suction tubes. When the collection tubes are full the lunar regolith goes back to the ship and converts it in to fuel. Operational design: The space trooper will be able to collect lots of dirt per trip by filling itself to maximum capacity each trip. Dealing with Dust: The space trooper is able to hover over the lunar regolith so as not to disturb it too much. The propellers help the space trooper stay in the air as well as keep the dust from sticking by blowing it away.