The total impulse (also known as impulse or specific impulse) in the context of propulsion refers to the change in momentum of a rocket or propulsion system. It is often denoted by the symbol “I” and can be calculated using the formula:
- I is the total impulse (in Newton-seconds or N·s).
- F is the thrust produced by the propulsion system as a function of time (in Newtons or N).
- t is the time over which the thrust is applied (in seconds or s).