Boeing KC-135 Stratotanker
The KC-135 Stratotanker is a four-engine jet aerial-refueling tanker built by Boeing, derived from the company's Model 367-80 prototype that also led to the 707 airliner. Its principal mission is air refueling, extending the range and endurance of Air Force, Navy, Marine Corps and allied aircraft using a flying boom, with an attachable drogue for probe-equipped receivers. The first aircraft flew in August 1956 and the initial Stratotanker was delivered to Castle Air Force Base in June 1957; 732 were built through 1965.
Most of the fleet was re-engined with quieter, more efficient CFM56 engines as the KC-135R/T, while reserve aircraft received TF33 engines as the KC-135E. A cargo deck above the fuel system lets it carry passengers and freight as well. Variants have served as airborne command posts and reconnaissance platforms. The KC-135 transformed aerial warfare and remains a mainstay of the U.S. tanker fleet.
Specifications
- Manufacturer
- The Boeing Company
- Type
- Aerial-refueling tanker and transport
- Crew
- 3-4 (pilot, co-pilot, boom operator; navigator on some missions)
- First Flight
- August 31, 1956
- Powerplant
- KC-135R/T: 4 x CFM International F108 (CFM56) turbofans, 21,634 lbf each; KC-135E: 4 x Pratt & Whitney TF33-PW-102
- Max Speed
- 530 mph (853 km/h) at 30,000 ft
- Range
- 1,500 mi (2,419 km) with 150,000 lb transfer fuel; up to 11,015 mi ferry
- Service Ceiling
- 50,000 ft (15,240 m)
- Length
- 136 ft 3 in (41.5 m)
- Wingspan
- 130 ft 10 in (39.9 m)
- Loaded Weight
- Max takeoff 322,500 lb (146,285 kg)