Modifications of the wing/nacelle fillets and lengthening the engine nacelles failed to cure these problems. Physically, the GlobalFlyer has twin tail booms mounted outboard of a shorter central fuselage nacelle. The cylinder struck the engine cowling, breaking it off its mountings on the port nacelle. Between the fuselage and inner side of the engine nacelle, the main tanks were located. The inlet is part of the fuselage or part of the nacelle. GE provides the whole nacelle including the thrust reverser. A fuselage bomb-bay was added, along with smaller bays in each engine nacelle. Some turbines place the rotor behind the nacelle (downwind design). Pitch is provided through rotor cyclic or nacelle tilt. The coolant header tank was in the forward nacelle, behind the propeller. All modern turbofan engines have acoustic liners in the nacelle to damp their noise. The engine nacelle was also faired into the flaps. Each engine featured twin General Electric turbochargers, situated at the aft end of the nacelle. It has one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. The spoilers were located outboard of the nacelle in front of the flaps.