Hello folks,
 
	Is there a way, to somehow force the particles to move like in the picture I drew?
 
	not completely from the beginning of the simulation but after a certain frame?? 
 
	I would really like to re-create a rocket exhaust effect, when the rocket climbs higher into the atmosphere, then the flame goes outwards because of the thiner atmosphere..  
	(for example, the Photo below - my reference picture..)
 
	I already have the expanding animation done.. I just need now to somehow force the particles to move behind my main simulation.. is this somehow possible to do?
 
	I would really appreciate some help!