Grace Spitfire

 

The world’s only female Spitfire pilot.

http://www.dailymail.co.uk/femail/article-1365433/One-magnificent-woman-Spitfire-love-affair.html

http://www.ml407.co.uk/

 

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Today in Aviation History
December 1, 1949: Cal Tech dedicates a hypersonic wind tunnel which can continually generate airflow speeds greater than 10 time that of sound at sea level. Allen E. Puckett of Ca Tech under contract to the Army Ordnance Department, designed it to accelerate rocket and guided missile research. The previous highest speed tunnel could maintain Mach 7 for only a few seconds. Costs: $2,600,000.