The two crossword solutions for the term TYPE OF PLANE ENGINE are Fanjet (6 letters) and Ramjet (6 letters). A fanjet is a type of jet engine that uses a fan to compress air before it enters the combustion chamber. This type of engine is typically used in commercial aircraft. A ramjet is a type of jet engine that uses the forward motion of the aircraft to compress air before it enters the combustion chamber. This type of engine is typically used in military aircraft.