Explanation
Specific impulse, or specific impulse, specific impulse is defined as the impulse generated by the amount of unit propellant. If the quantity of propellant is described by weight, the specific impulse has the time dimension, and the international unit is second (s); If the mass is used to describe the quantity of propellant, the specific impulse is expressed in the speed dimension, and the international unit is meters per second (m/s). Since specific impulse can also be written as the thrust produced by consuming unit propellant in unit time, it is also called specific impulse as specific thrust. specific impulse is an important physical parameter used to measure the efficiency of rocket or aircraft engines. Its size is related to the propellant chemical energy, combustion efficiency and nozzle efficiency of the engine. The higher the specific impulse of the engine, the greater the velocity increment that the propellant can produce under the same conditions, and the higher the engine efficiency.
Classification
Energy Materials -> Energetic materials -> Solid propellants
Related Terms
no related words