Impulse (or total impulse) is defined as equal to force multiplied by time - it is a measure of how powerful motors are, and can easily give you your change in velocity (Impulse / Mass, assuming no drag or gravity losses. There will always be drag and gravity losses.) Total impulse can be thought of as the area under the thrust curve.
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Impulse (or total impulse) is defined as equal to force multiplied by time - it is a measure of how powerful motors are, and can easily give you your change in velocity, Impulse / Mass, assuming no drag or gravity losses. (There will always be drag and gravity losses.) Total impulse can be thought of as the area under the thrust curve.
[[File:L1_Guide_Thrust_Curve.png|400px|thumb|frame|center|Thrust curves of motors with the same total impulse]]
[[File:L1_Guide_Thrust_Curve.png|400px|thumb|frame|center|Thrust curves of motors with the same total impulse]]