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Mar. 22 Ground Speed, 40 mph (Top): Air Speed, Somewhere over 1, 300 mph. The English Electric P.1B is undoubtedly a very fast, supersonic fighter. Although details of its performance are secret it is claimed for its forerunner the 9.1 that on a number of occasions speeds of over 1, 300 mph have been reached in a climb. Picture Shows:- Chief Test Pilot Jim Heyworth (left) arrives in his vintage Austin 7 (at least pre-World War II: top speed given as about 40 mph) to take up the P.1B at the Flight Development Establishment, Hucknell, England. His passenger in the tiny ancient is Test Pilot Jim Jackson. Framework on the air intake of the P.1B (left) is a debris guard

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Although Claimed Climb Details Establishment Forerunner Framework Intake P.1b Reached Somewhere Speeds Supersonic Tiny Undoubtedly

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