What is the correct definition for propellant?

What is the correct definition for propellant?

: something that propels: such as. a : an explosive for propelling projectiles. b : fuel plus oxidizer used by a rocket engine. c : a gas kept under pressure in a bottle or can for expelling the contents when the pressure is released.

What is propellant and example?

Most liquid chemical rockets use two separate propellants: a fuel and an oxidizer. Typical fuels include kerosene, alcohol, hydrazine and its derivatives, and liquid hydrogen. Many others have been tested and used. Oxidizers include nitric acid, nitrogen tetroxide, liquid oxygen, and liquid fluorine.

Which is used as propellant?

propellant, any gas, liquid, or solid the expansion of which can be used to impart motion to another substance or object. In aerosol dispensers, compressed gases such as nitrous oxide, carbon dioxide, and many halogenated hydrocarbons are used as propellants.

What is a sentence for propellant?

Propellant sentence example The motor contains solid fuel propellant and can accelerate the rocket to several hundred miles an hour in some cases. The propellant cordite was an essential component of ammunition during the First World War, and the solvent acetone was used in its manufacture.

What is propellant in chemistry?

A propellant is a material that is used to move an object by applying a motive force. This may or may not involve a chemical reaction. It may be a gas, liquid, plasma, or, before the chemical reaction, a solid. Common chemical propellants consist of a fuel, like gasoline, jet fuel and rocket fuel, and an oxidizer.

What are the types of propellant?

Liquid propellant

• Liquid oxygen and liquid hydrogen.
• Liquid oxygen and kerosene or RP-1.
• Liquid oxygen and ethanol.
• Liquid oxygen and methane.
• Hydrogen peroxide and mentioned above alcohol or RP-1.
• Red fuming nitric acid (RFNA) and kerosene or RP-1.
• RFNA and Unsymmetrical dimethylhydrazine (UDMH)

What are hydrocarbon propellants?

Hydrocarbon propellants are used in topical pharmaceutical aerosols because of their environmental acceptance, low toxicity, and lack of reactivity. They are useful in three-phase (two-layer) aerosol systems because they are immiscible with water and have a density less than 1.

What are propellants in chemistry?

What is hydrocarbon propellant?

3.4 Hydrocarbon Propellants. Hydrocarbon propellants are used in topical pharmaceutical aerosols because of their environmental acceptance, low toxicity, and lack of reactivity. They are useful in three-phase (two-layer) aerosol systems because they are immiscible with water and have a density less than 1.

Is hydrazine an amine?

Being bifunctional, with two amines, hydrazine is a key building block for the preparation of many heterocyclic compounds via condensation with a range of difunctional electrophiles.

What is a propellant grain?

[prə′pel·ənt ‚grān] (materials) An elongated molding or extrusion, often of intricate shape, of solid propellant for a rocket, regardless of size.

What is heterogeneous propellant?

Heterogeneous propellants are mixtures of crystalline oxidizer particles binded within a polymeric fuel matrix. The commonly used oxidizers such as AP and AN produce high oxygen concentrations on thermal decomposition. The fuel used is the hydrocarbon-based polymers such as HTPB, CTPB, and PBAN.

Which is the correct definition of a propellant?

In ballistics and pyrotechnics, a propellant is a generic name for chemicals used for propelling projectiles from guns and other firearms.

Why are there different propellants in metered dose inhalers?

The metered dose inhaler (MDI) was developed in the 1950’s. The propellant used in MDIs used to contain CFCs (Chlorofluorocarbons). The propellant in most of the MDIs now is an HFA (hydrofluoroalkane) propellant. Why is there a different propellant in metered dose inhalers? CFCs were found to deplete the ozone layer high above the earth.

How is an unsourced material used as a propellant?

Unsourced material may be challenged and removed. A propellant or propellent is a chemical substance used in the production of energy or pressurized gas that is subsequently used to create movement of a fluid or to generate propulsion of a vehicle, projectile, or other object.

Which is the most tractable liquid propellant in the world?

Unfortunately, almost any propellant that gives good performance is apt to be a very active chemical; hence, most propellants are corrosive, flammable, or toxic, and are often all three. One of the most tractable liquid propellants is gasoline.