achieved by super-plastic forming of the blades and linear friction welding to the blisk hub). Organic matrix composites are used for the interstage vanes. The LiftFan is cleared for flight up to 250 kn This condition appears as a crosswind to the horizontal intake and occurs when the aircraft transitions between forward flight and hover.

The clutch mechanism uses dry plate carbon-carbon technology originally derived from aircraft brakes. Friction is only used to engage the lift fan at low engine