Concorde 001 Prototype Flew to Observe 1973 Total Solar Eclipse for 74 Minutes

Record-Setting Eclipse Observation

On June 30, 1973, the Concorde F-WTSS 001 prototype was utilized by a team of eight scientists to observe a total solar eclipse. By flying at speeds exceeding Mach 2, the aircraft was able to keep pace with the Moon's shadow, extending the observation period significantly. This resulted in a new world record of 74 minutes for observing a total solar eclipse.

Context of the Achievement

To provide perspective, the maximum duration of totality for an eclipse observed from the ground is typically around 7.5 minutes in equatorial regions. For the upcoming August 12 solar eclipse, ground observation will offer slightly more than two minutes of totality. The Concorde's ability to sustain supersonic flight allowed for an unprecedented extension of this observation window.

Inspiration and Planning

The idea for this scientific mission originated with Pierre Léna, a scientist with experience in high-altitude astronomical observations. Recognizing that the 1973 eclipse would occur near the equator, where the Moon's shadow moves at a relatively slower, though still supersonic, speed, Léna identified the Concorde as the only aircraft capable of matching this velocity. He approached André Turcat, chief of test flights at Aerospatiale, in 1972, who expressed interest in the project.

Legacy of the Concorde 001

The Concorde F-WTSS 001 prototype, now displayed at the National Air and Space Museum of France, bears a painted map on its nose tracing the path of the 1973 eclipse. This detail serves as a reminder of its unique contribution to scientific research beyond its primary role in aviation development.