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
- Future lunar missions may be fuelled in space depot
A spacecraft docks at a propellant depot - somewhere between the Earth and the Moon - and picks up extra rocket fuel before making its way to the lunar surface. According to engineers at Massachusetts Institute of Technology (MIT), future lunar missions may be fuelled by gas stations in space. So whatever you can save, there is that much more payload you can take Read more on this news related to 'Propellant'
- NASA Tests New Robotic Refueling Technologies
Process Could Allow Satellites To Be Replenished In Orbit NASA has successfully concluded a remotely controlled test of new technologies that would empower future space robots to transfer hazardous oxidizer – a type of propellant – into the tanks of satellites currently in orbit. Concurrently on the ground, NASA is incorporating results from this test and the Read more on this news related to 'Propellant'
- MIT team proposes storing extra rocket fuel in space for future missions
( Massachusetts Institute of Technology ) Future lunar missions may be fueled by gas stations in space, according to MIT engineers: a spacecraft might dock at a propellant depot, somewhere between the Earth and the moon, and pick up extra rocket fuel before making its way to the lunar surface. Read more on this news related to 'Propellant'