The true ancestor of modern airliners, with all-metal structure, cantilever low wings and retractable landing gear, was the Boeing Model 247, the prototype of which was flown on 8 February 1933. A total of 75 was built. The major production version was the Model 247D, powered by two 550 hp Pratt St Whitney Wasp engines driving controllable-pitch propellers. Cruising speed with ten passengers and 400 lb (181 kg) of mail was 180 mph (304 km/h).

Category Empty

There are no files in this category.

You are viewing page number: 18

To navigate: click on a page number below

Page - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15