BBC Inside Science

How is air travel returning to supersonic speeds?

17 snips
Jan 22, 2026
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ANECDOTE

First Flight From The Runway

  • John Britton recalls seeing Concorde's first flight in April 1969 as a young apprentice standing by the runway.
  • He describes the surprise when the nose wheel lifted and the prototype took off amid cheering.
INSIGHT

Thermal Limits Controlled Speed

  • Concorde's certified top speed was about Mach 2.02 but thermal limits capped structure temperature to 127°C.
  • Engineers used probes to back off speed automatically when skin temperatures reached limits to protect the airframe.
ANECDOTE

Visiting The Le Bourget Crash Site

  • John Britton describes travelling to the 2000 Le Bourget crash site with colleagues to identify parts for investigators.
  • He recalls the terrible smell and the shock of finding body parts marked by road cones.
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