The secret engine technology that made the SR-71 the fastest plane ever

Deepak verma

On December 17, 1903, the Wright brothers flew the first airplane ever at 6.8 mph (10.9 km/h). Only 61 years and five days later, the Lockheed SR-71 Blackbird took off. It’s still the world’s fastest airplane with a speed of 2,193 mph (3,530 km/h.) This fascinating video reveals how its top secre
December 20, 2014 at 06:07PM
http://nblo.gs/12bGQS
By Deepak verma

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