1. By Will Parnell

2. * The system creates propulsion using an inert gas such as Nitrogen or Helium as the fuel. * The gas is stored under high pressure, then sent to the thruster which releases the gas.

3. * A cold gas thruster has four main parts: a storage tank, a gas line, a valve, and a thruster.

4. * Cold gas thrusters are commonly used for vernier engines which are used for attitude control on spacecraft. * They are generally used for fine adjustments to the attitude or velocity.

5. * An astronauts Manned Maneuvering Unit is another use.

6. * The gas is kept in a pressurized tank, then released the thruster * The energy required for propulsion is contained in the pressurized gas.

7. * Cold gas systems do not produce as much thrust per kilogram of fuel as solid or liquid fuel. * The thrust relies only on the pressure inside of the containment tank.

8. * http://www.google.com/imghp http://www.google.com/imghp * http://www.lr.tudelft.nl/en/organisation/depa rtments/space-engineering/space-systems- engineering/expertise-areas/space- propulsion/propulsion-options/chemical- rockets/cold-gas/ http://www.lr.tudelft.nl/en/organisation/depa rtments/space-engineering/space-systems- engineering/expertise-areas/space- propulsion/propulsion-options/chemical- rockets/cold-gas/ * http://en.wikipedia.org/wiki/Cold_gas_thruste r http://en.wikipedia.org/wiki/Cold_gas_thruste r * http://en.wikipedia.org/wiki/Vernier_engine http://en.wikipedia.org/wiki/Vernier_engine * http://en.wikipedia.org/wiki/Manned_Maneuv ering_Unit