Archibald, #48,
You asked if there was documentation for the tip-turbine development of the Vought XF5U follow-on. I learned of it during a discussion with the Vought engineer assigned to the Regulus II program at Point Mugu NAS in 1963. The subject was whether the unmanned aircraft could be zoom-climbed to an altitude record employing the dynamic performance optimization methodology developed by my company, and demonstrated earlier with the F-104. (No, later computer simulations indicated too much drag during the pre-zoom pitchup.) Lots of napkin sketches at the O-Club, also by the Navy project officer and the GE rep who also attended.
Seems to me there was mention of Vought and possibly Ryan in a later "Air Progress" article on the unsuccessful Lockheed and Convair Navy VTOL prototypes.
Dynasoar