X-15A-2 with full scale ablative and external tanks installed parked in front of hangar
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X-15A-2 with full scale ablative and external tanks installed parked in front of hangar. In June 1967, the X-15A-2 rocket-powered research aircraft received a full-scale ablative coating to protect the craft from the high temperatures associated with hypersonic flight (above Mach 5). This pink eraser-like substance, applied to the X-15A-2 aircraft (56-6671), was then covered with a white sealant coat before flight. This coating would help the #2 aircraft reach the record speed of 4,520 mph (Mach 6.7). — NASA AFRC · 1967. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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