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
- Air Force-Developed Rocket Propellant Could Usher In Next Era of Space Travel
Liquid salt can be used to power spacecraft. Read more on this news related to 'Propellant'
- Transition to Propellant-Free Combivent® Respimat® (ipratropium bromide and albuterol) Inhalation Spray Nears Completion
RIDGEFIELD, Conn., May 17, 2013 /PRNewswire/ -- As part of the company's commitment to chronic obstructive pulmonary disease (COPD) patients, Boehringer Ingelheim Pharmaceuticals, Inc., a leader in respiratory ... Read more on this news related to 'Propellant'
- AFOSR-funded research key to revolutionary 'green' spacecraft propellant
( Air Force Office of Scientific Research ) In 1998, the Air Force Office of Scientific Research began a search for an environmentally friendly spacecraft propellant to replace hydrazine, which was toxic, corrosive, and highly flammable. Success was found in an ionic liquid monopropellant, to be used by NASA in a 2015 space mission. Read more on this news related to 'Propellant'