True or False
The Concorde grew several centimeters longer during flight.
True! The legendary supersonic Concorde experienced significant heating of its airframe due to friction at cruise speed (Mach 2). This thermal expansion caused the aircraft to actually stretch up to 30 centimeters (about 12 inches) during flight, then contract again as it cooled after landing. The engineer behind the aircraft could even place his hat in a gap that formed behind the cockpit during flight, demonstrating the effect.
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