study the conditionstates on the aircraifts ...
there are certain states for a raptor, like when its landed, it womt have the smok trailers, when it takes off, it gets another coniditonstate for the afterburners, after that another conditionstate for the trailers while flying.
YOu should use this ... its quite simple, just look at it.
Make an animation for your plane, with the boosters turning, save your model as a pure animation and call it using the coditionstates...
Pretty simple
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