Technology term
Specific Impulse (Isp)
A measure of rocket-engine propellant efficiency, defined as thrust produced per unit weight flow of propellant and commonly expressed in seconds. A higher specific impulse means more thrust can be obtained from a given amount of propellant, but it does not by itself indicate total thrust or engine power.
English
Specific Impulse
Arabic
النبضة النوعية
First appeared in
NASA Tests a Lithium-Fed Electric Thruster Built for Deep-Space Missions
