60 years ago, September 17 North American Aviation chief test pilot
Scott Crossfield (the first pilot to fly at twice the speed of sound in 1953) made the first powered flight with the rocket-powered hypersonic research
X-15 aircraft. Between June 1959 and December 1960, Crossfield made 14 free flights with the X-15 space probing aircraft. He was one of only 12 pilots, among whom Neil Armstrong & Joe Engle, to fly the legendary X-15...
Although the X-15 achievements were overshadowed by the Mercury astronauts, both X-15 test pilots and the seven Mercury astronauts were issued Bulova Accutron tuning fork wristwatches as discussed in other topics on this forum...
Here a September 1959 press briefing photo of Scott Crossfield describing the tight fit of his helmet on the Davild Clark pressure suit. Crossfield tweaked the design of the outer layer of the suit to be shiny silver coated in order to appeal to the press (see the cover of January 1958 LIFE magazine). Note he was wearing his personal
Rolex GMT-master pilot watch. In the lower photo he was holding a Topping scale model of the X-15...
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1960s Topping scale models of the X-15 hypersonic research aircraft (MoonwatchUniverse)