Rwessel From United States of America, joined Jan 2007, 2141 posts, RR: 2 Reply 1, posted (6 years 6 months 3 weeks 2 days 23 hours ago) and read 2795 times:
Quoting Blackbird (Thread starter): During the time-period when supersonic fighters like the F-100, F-101, and F-102 began flying, did they have more reliable speed-gauges (IAS)?
For supersonic aircraft, you usually have KEAS (Knot Equivilent Air Speed - basically calibrated airspeed with corrections for compressibility) instead of IAS, since a conventional pitot-type airspeed sensor is impossible much past M1.0. Usually you have an air impact pressure sensor facing the breeze, plus some way of sensing the static pressure (itself a problem for supersonic aircraft), and then some way to integrate the two values.
I don't know about the early Centuries, but this was certainly a non-issue by 1960.