What are the characteristics of rocket propellant?
These rocket propellants are basically combustible compounds inclusive of fuels such as kerosene, hydrazine and its derivatives, liquid hydrogen, alcohol and oxidizers such as nitric acid, liquid fluorine, nitrogen tetroxide and liquid oxygen.
What is the difference between single base and double base?
There are two basic types of modern smokeless gunpowder: single and double base. Single-base smokeless powder is made from nitrocellulose. Double-base smokeless powder is a combination of nitrocellulose and nitroglycerin.
What is double base powder?
Definition of double-base powder : an explosive powder or propellant that contains nitrocellulose and nitroglycerin as the essential components — compare single-base powder.
What are the two ways rocket propellants are classified?
Propellants are classified according to their state – liquid, solid, or hybrid. The gauge for rating the efficiency of rocket propellants is specific impulse, stated in seconds.
What are the types of propellants?
Types of propellants commonly used in pharmaceutical aerosols include chlorofluorocarbons, fluorocarbons (trichloromonofluoromethane, dichlorodifluoromethane), hydrocarbons (propane, butane, isobutane), hydrochlorofluorocarbons and hydrofluorocarbons, inert gases (nitrogen, NO2, CO2) and compressed gases (Alston et al. …
What are the different kinds of propellants?
What is the difference between single-base and double base propellant?
In propellants, there are single- and double-base types. Single-base propellant has its energetic component being only nitrocellulose. To get higher energy content into propellant and therefore more performance, nitroglycerin (NG) is added to the nitrocellulose. Propellant that contains NG is called “double base.”
What are the characteristics of a good propellant?
The desirable characteristics for a solid propellant are high specific impulse, predictable and reproducible burning rate and ignition characteristics, high density, ease of manufacturing, low cost, and good aging characteristics.
What does double base powder mean?
Which one is not essential property of good propellant?
Explanation: Injector pattern is not considered for the selection of liquid propellant.
What is the chemical composition of propellant?
The first, the so called double-base propellant, consists of nitrocellulose and nitroglycerine, plus additives in small quantity. There is no separate fuel and oxidizer. The molecules are unstable, and upon ignition break apart and rearrange themselves, liberating large quantities of heat.
What are double base propellants made of?
Double base propellants having a mixture of bismuth and copper salts of hydroxy-substituted benzoic acids added as burning rate (ballistic) modifiers [119]. Chuang Xue, Yin Li, in Comprehensive Biotechnology (Third Edition), 2019
What are the types of solid propellants?
Two general types of solid propellants are in use. The first, the so called double-base propellant, consists of nitrocellulose and nitroglycerine, plus additives in small quantity. There is no separate fuel and oxidizer. The molecules are unstable, and upon ignition break apart and rearrange themselves, liberating large quantities of heat.
What are the two main propellants used in rockets?
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.