Back بوينغ سي-97 سترتوفريتر Arabic Boeing C-97 Stratofreighter Czech Boeing C-97 German Boeing C-97 Stratofreighter Greek Boeing C-97 Stratofreighter Spanish بوئینگ سی-۹۷ استراتوفرایتر Persian Boeing C-97 Stratofreighter French Boeing C-97 Stratofreighter ID Boeing C-97 Stratofreighter Italian C-97 (航空機) Japanese
 | This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages)
|
| C-97 Stratofreighter | |
|---|---|
 | |
| General information | |
| Type | Military transport aircraft |
| Manufacturer | Boeing |
| Primary users | United States Air Force |
| Number built | 77 (total of 888 in all variants) |
| History | |
| Manufactured | 1944–1952 |
| Introduction date | 1947 |
| First flight | 9 November 1944 |
| Retired | 1978 |
| Developed from | Boeing B-29 Superfortress Boeing B-50 Superfortress |
| Variants | Boeing KC-97 Stratofreighter |
| Developed into | Boeing 377 Stratocruiser Aero Spacelines Pregnant Guppy Aero Spacelines Super Guppy Aero Spacelines Mini Guppy |
The Boeing C-97 Stratofreighter is a long-range heavy military cargo aircraft developed from the B-29 and B-50 bombers. Design work began in 1942, the first of three prototype XC-97s flew on 9 November 1944 and the first of six service-test YC-97s flew on 11 March 1947. All nine were based on the 24ST alloy structure and Wright R-3350 engines of the B-29, but with a larger-diameter fuselage upper lobe (making a figure of eight or "double-bubble" section) and they had the B-29 vertical tail with the gunner's position blanked off. The first of three heavily revised YC-97A incorporating the re-engineered wing (higher-strength 75ST alloy), taller vertical tail and larger Pratt & Whitney R-4360 engines of the B-50 bomber, flew on 28 January 1948 and was the basis of the subsequent sole YC-97B, all production C-97s, KC-97s and civilian Stratocruiser aircraft. Between 1944 and 1958, 888 C-97s in several versions were built, 811 being KC-97 tankers.[1][2] C-97s served in the Berlin Airlift, the Korean War, and the Vietnam War. Some aircraft served as flying command posts for the Strategic Air Command, while others were modified for use in Aerospace Rescue and Recovery Squadrons (ARRS).