The propellant material and geometrical configuration of the grain determine the motor performance characteristics. blending with other propellants and solvents.


2.

Today, General Dynamics Ordnance and Tactical Systems continues the legacy as a U.S. leader in propellant technology, offering over 120 types of propellants. The grain is the shaped mass of processed solid propellant inside the rocket motor.

• With its greater solubility, Ethane can produce a better spray pattern than a comparable CO2 product and the higher volume of propellant will give greater protection from propellant exhaustion. Both types are dense, stable at ordinary temperatures, and easily storable.

Types of Solid Propellants . 9-21). LIQUEFIED GAS PROPELLANTS 7 • Liquefied propellants are gases that exist as liquids under pressure. TYPES OF PROPELLANTS (a) Liquefied gases Propellants (b) Compressed gases Propellants 7. • Because the aerosol is under pressure propellant exists mainly as a liquid, but it will also be in the head space as a gas.
It resembles smokeless gunpowder.

This covering confines the burning area and aids . There are two basic types of solid-propellant charges-restricted burning and unrestricted burning. Unlike liquid propellant engines, solid propellant motors cannot be shut down. The propellant grain usually consist of 1 of 2 types of chemical. An attempt is made to compare cast propellant and reinforced propellant in Fig.

Once ignited, they will burn until all the propellant is exhausted. One type is the double-base , which consists largely of nitroglycerine and nitrocellulose . A restricted-burning charge has some of its exposed surfaces covered with a liner or inhibitor (view A in fig. Our quality propellants have been supplied to the armed forces of the United States and its allies since 1914. The propellant grain is a cast, molded, or extruded body and its appearance and feel is similar to that of hard rubber or plastic. There are two families of solids propellants: homogeneous and composite. However, the two materials are obviously so different in physical characteristics that it is necessary to specify how the two types of propellants are to be used in order to develop significant comparisons.


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