Rocket Propulsion Systems 0.0 / 5 ? PhysicsThermal physicsA2/A-levelAQA Created by: lharrisonxCreated on: 27-03-16 12:37 Solid Fuel System Provide large amounts of thrust. Cannot be switched off once ignited. Fuel and oxidiser are combined to generate high temperatures and pressures. Cavity inside the engine increases in volume as the fuel is combusted. Pressure and efficiency fall as the fuel is combusted (due to the increase in volume: pV=nRT) 1 of 3 Cold Gas System Single gas and a nozzle- simplest system. Safest of all chemical propulsion systems. Less efficient than other chemical propellants. The pressure goes down as the gas is used, reducing thrust and efficiency. 2 of 3 Ion Propulsion System Electric propulsion. Small amounts of ionised gas are accelerated by an electrostatic field to produce a high speed exhaust. Uses far less fuel than a chemical system. Inefficient in an atmosphere or during launch. Useful in space- only a small thrust is required over a long distance to produce a high change in velocity. Can be used as a final thruster or for deep space travel. The source of energy for the engine can be either solar or nuclear. 3 of 3
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