System-specific Impulse, Issp is a measure that describes performance of jet propulsion systems. A reference number is introduced, which defines the total impulse, Itot, delivered by the system, divided by the system mass, mPS: Issp=Itot/mPS Because of the resulting dimension, - delivered impulse per kilogram of system mass mPS, this number is called ‘System-specific Impulse’.
System-specific Impulse, Issp is a measure that describes performance of jet propulsion systems. A reference number is introduced, which defines the total impulse, Itot, delivered by the system, divided by the system mass, mPS: Issp=Itot/mPS Because of the resulting dimension, - delivered impulse per kilogram of system mass mPS, this number is called ‘System-specific Impulse’.
Source: Wikipedia "System-specific impulse" · CC BY-SA 4.0
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