This pack contains large and powerful aerospace parts, such as jet engines, intakes, and nacelles. It was preciously part of the MkIV Spaceplane system but has been split off. 

• Large Multimode Engines: Big (2.5m), powerful RAPIER-like engines for your wildest spaceplane needs.
• Large Jet Engines: Hefty 2.5m engines - turbofans and turbojets for big aircraft.
• Advanced Propeller Engines: Super-efficient low speed propfans and turboprops.
• Lift Fans: Designed specifically for efficient VTOL and available in many sizes, these engines can run on LiquidFuel and air, or be driven electrically for flight in oxygenless atmospheres.
• Nuclear Jet Engines: Massive, rewarding engines that let you fly almost forever!
• Large Nacelles and Intakes: Of course, 2.5m nacelles, engine pods, precoolers and advanced intakes to help out.