Propellants

AEROSOL SPRAYS

In Aerosol Spray cans, the propellant is simply a pressurized vapour in equilibrium with its liquid. As some gas escapes to expel the payload, more liquid evaporates, maintaining an even pressure. (See Aerosol Spray Propellant for more information.)

SOLID PROPELLANT ROCKETS AND PROJECTILES

In Ballistics and Pyrotechnics , a propellant is a material which burns very rapidly but controllably, to produce Thrust by Gas Pressure and thus Accelerate a Projectile or Rocket . In this sense, common or well known '''propellants''' include, for Firearm s, Artillery and Solid Propellant Rocket s:

Gunpowder s, such as

--- Black Powder

--- Nitrocellulose

--- Cordite

--- Smokeless Powder

Composite Propellant s made from a solid Oxidizer such as Ammonium Perchlorate or Ammonium Nitrate , a rubber such as HTPB or PBAN , and usually a powdered Metal Fuel such as Aluminum .

Some Amateur propelants use Potassium Nitrate , combined with Sugar , Epoxy , or other fuels / binder compounds.

Potassium Perchlorate has been used as an oxidizer, paired with Asphalt , Epoxy , and other binders.

LIQUID PROPELLANT ROCKETS

Common propellants for Liquid Propellant Rocket s include:

RFNA and Kerosene or RP-1

RFNA and UDMH

Dinitrogen Tetroxide and UDMH , MMH and/or Hydrazine

Liquid Oxygen and Kerosene or RP-1

Liquid Oxygen and liquid Hydrogen

Hydrogen Peroxide and Alcohol or RP-1

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Propellants