Those aren't new things though, and it's not the crux of what the X wing was. The rigid rotor, the pusher propeller, had all been done already in the 1967 AH-56

Those aren't new things though, and it's not the crux of what the X wing was. The rigid rotor, the pusher propeller, had all been done already in the 1967 AH-56.The X wing has more in common with the F-35B than the S-97 has in common with the X wing. The S-97 is attempting to succeed where the AH-56 failed; it's supposed to do helicopter things with a helicopter frame and fulfill a helicopter role, but maybe have a little more speed and altitude capability. The F-35B is attempting to succeed where the X wing failed; it's supposed to do jet plane things with a jet plane frame and fulfill a jet plane role, but be able to do so in places and environments where a full sized runway doesn't fit. https://en.wikipedia.org/wiki/Lockheed_AH-56_Cheyenne https://en.wikipedia.org/wiki/Lockheed_AH-56_Cheyenne