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Jun 23, 2021 at 11:08 comment added Zeiss Ikon @CalinCeteras I've read that, too, though I think they're barely supersonic, and the bomber itself is firmly subsonic, as compared to the XF-84H which was high-subsonic and intended to fly supersonic, with significantly supersonic tips. And the Bear is pretty danged loud, too...
Jun 23, 2021 at 10:32 comment added Calin Ceteras If I remember correctly, the TU-95 "Bear" patrol bomber of the Russians has supersonic propeller tips.
Jun 14, 2021 at 11:17 comment added Zeiss Ikon @leftaroundabout Lots of X-plane concepts were "what happens if" experiments. Republic was pretty sure they could break Mach 1 on a propeller, and solve the slow throttle response of direct thrust turbines (by being able to almost instantly change pitch). Whole concept out the window before first takeoff...
Jun 14, 2021 at 0:00 comment added leftaroundabout If you're going to count X-planes then this will become a long list...
Jun 13, 2021 at 11:01 history answered Zeiss Ikon CC BY-SA 4.0