This attribute defines an Impulsive Maneuver.
Astrogator <Satellite Object Path> SetValue <Astrogator Object Path>.MnvrType <Maneuver Type>
The Impulsive Maneuver calculates a state by adding the defined delta-V vector to the velocity of the final state of the previous segment, adds this new state to the ephemeris, and passes it to the next segment.
Astrogator */Satellite/Satellite1 SetValue MainSequence.SegmentList.Maneuver.MnvrType Impulsive
STK Programming Interface 11.0.1