Dictionary Meaning and Definition on 'Propellant'
adj : tending to or capable of propelling; "propellant fuel for
submarines"; "the faster a jet plane goes the greater
its propulsive efficiency"; "universities...the seats
of propulsive thought" [syn: propellent, propelling,
n : something that propels [syn: propellent]
Wikipedia Meaning and Definition on 'Propellant'
A propellant is a material that is used to move ("propel") an object. The material is usually expelled by gas pressure through a nozzle. The pressure may be from a compressed gas, or a gas produced by a chemical reaction. The exhaust material may be a gas, liquid, plasma, or, before the chemical reaction, a solid, liquid or gelled.
Common chemical propellants consist of a fuel; like gasoline, jet fuel, rocket fuel, and an oxidizer.
In aerosol spray cans, the propellant is simply a pressurized gas in equilibrium with its liquid (at its saturated vapour pressure). As some gas escapes to expel the payload, more liquid evaporates, maintaining an even pressure. (See aerosol spray propellant for more information.)
Technically, the word propellant is the general name for chemicals used to create thrust. For vehicles, the term propellant refers only to chemicals that are stored within the vehicle prior to use, and excludes atmospheric gas or other material that may be collected in operation.[See more about Propellant at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Propellant'
Propellant Sample Sentences in News
- Army rejects EPA's order to clean up Camp Minden
The U.S. Army said it will not comply with the EPA's order that it clean up propellant it shipped to Camp Minden, hedging on the bet that the environmental agency doesn't have the authority to even make the demand. Read more on this news related to 'Propellant'
- Aerojet Rocketdyne Successfully Tests 1 Newton Thruster for Green Propellant Infusion Mission
SACRAMENTO, Calif. -- Aerojet Rocketdyne, a GenCorp company, has successfully completed a hot-fire test on its flight-representative 1 Newton (1N) thruster at our specially designated green propellant ... Read more on this news related to 'Propellant'
- EPA orders Army to clean up Louisiana explosives
Federal environmental officials have rejected an appeal from the U.S. Army and reiterated their order to clean up 15 million pounds of artillery propellant improperly stored at a northwest Louisiana site. In March, the Environmental Protection Agency ordered the Army to take charge of the M6 propellant, which ... Read more on this news related to 'Propellant'