propellant

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propellant

(prŏ-pĕl′ănt) [L. propellere, to drive forward]
Any agent that forces another to move in a desired direction. Inhaled medications rely on propellants to improve drug delivery to patients. Hydrofluoroalkane propellants are used in metered dose inhalers, i.e., in canisters that deliver drugs such as beta-agonists or anticholinergic agents to patients with asthma or chronic obstructive lung disease.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Figure 1 shows the simplified and scaled first-stage model of a space launch vehicle using liquid propellant. This model is composed of three sections: an oxidizer tank, a center body, and a fuel tank.
According to the report, "Because of the large quantities of liquid propellants involved and the proximity of the nuclear payload, most launch pad accidents result in explosions of a magnitude that are very severe in terms of their effect on the nuclear payload." The report details various accident scenarios, including one called a "tipover" and another a "pushover," and concludes that in either accident, there could be pressures as high as 19,600 pounds per square inch.
The PSLV is a four-stage engine rocket powered by solid (first and third) and liquid propellants (second and fourth) alternatively.
government used his engines and liquid propellants in rockets resulted in a $1 million settlement in 1960 to his wife and the Guggenheim Foundation.
The 49-meter tall rocket, weighing 401 tons, is a three-stage vehicle with the core stage powered by solid propellants, the second stage by liquid propellants and the third being a cryogenic stage using liquid hydrogen and oxygen.
Cryogenic denotes a rocket stage that is much more efficient, providing more thrust for every kg of propellant compared to stages that run on solid and liquid propellants.