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Wc-135 Constant Phoenix | bgcolor="#87CEEB" colspan="3" align="center" style="border-bottom:3px solid"|WC-135 Constant Phoenix | olspan="3" align="center"|
WC-135 Constant Phoenix | | gcolor="#87CEEB" colspan="3"|Description | | ole | colspan="2"|Atmospheric testing | | rew | colspan="2"| | | irst flight | colspan="2"| | | ntered service | colspan="2"|December 1965 | | anufacturer | colspan="2"|Boeing Aerospace | | gcolor="#87CEEB" colspan="3"|Dimensions | | ength | 139 ft 11 in | 42.6 m | | ingspan | 130 ft 10 in | 39.9 m | | eight | 42 ft | 12.8 m | | ing area | ft² | m² | | gcolor="#87CEEB" colspan="3"|Weights | | mpty | lb | kg | | oaded | lb | kg | | aximum takeoff | 300,500 lb | 136,300 kg | | apacity | colspan="2"| | | gcolor="#87CEEB" colspan="3"|Powerplant | | ngines | colspan="2"|Four Pratt & Whitney TF33-P-5 | | ower | hp | kW | | hrust | lb | kN | | gcolor="#87CEEB" colspan="3"|Performance | | aximum speed | mph | km/h | | ombat range | miles | km | | erry range | miles | km | | ervice ceiling | 40,000 ft | 12,200 m | | ate of climb | ft/min | m/min | | gcolor="#87CEEB" colspan="3"|Avionics | | vionics | colspan="2"| | | gcolor="#87CEEB" colspan="3"|Armament | | olspan="3"| None | WC-135 Constant Phoenix is a special purpose aircraft of the USAF, a version of the C-135. Mission The WC-135W Constant Phoenix atmospheric collection aircraft supports national level consumers by collecting particulate and gaseous effluents and debris from accessible regions of the atmosphere in support of the Limited Nuclear Test Ban Treaty of 1963. Features The aircraft is a modified C-135B. The Constant Phoenix’s modifications are primarily related to its on-board atmospheric collection suite, which allows the mission crew to detect radioactive “clouds” in real time. The aircraft is equipped with external flow-through devices to collect particulates on filter paper and a compressor system for whole air samples collected in holding spheres. The interior seats 33 people, including the cockpit crew and special equipment operators from the Air Force Technical Applications Center. Background General Dwight D. Eisenhower commissioned the Constant Phoenix program on Sept. 16, 1947 when he charged the Army Air Forces with the overall responsibility for detecting atomic explosions anywhere in the world. In September 1949, a WB-29 flying between Alaska and Japan detected nuclear debris from Russia’s first atomic test--an event thought not possible until mid-1950. Beginning in August 1950, WB-50 aircraft were converted for the air-sampling mission over a two-year period. WC-135 aircraft began replacing the WB-50s in December 1965 and became the workhorse of the atmospheric collection program. Air sampling missions were routinely conducted over the Far East, Indian Ocean, Bay of Bengal, Mediterranean Sea, the Polar regions, and off the coasts of South America and Africa. The WC-135W played a major role in tracking radioactive debris from the Soviet Union’s Chernobyl nuclear plant disaster. Currently the air-sampling mission is tasked to support the Limited Nuclear Test Ban Treaty of 1963, which prohibits any nation from testing nuclear weapons above ground. The 45th Reconnaissance Squadron at Offutt AFB, Nebraska, works closely with AFTAC and the Technical Operations Division to verify if any illegal testing of nuclear weapons has occurred. The WC-135W is currently the only aircraft in the inventory conducting air-sampling operations. General characteristics - Primary function: Air sampling and collection operations
- Contractor: Boeing Aerospace
- Power Plant: Four Pratt & Whitney TF33-P-5 turbofans with trust reversers
- Thrust: 16,050 lbf (71 kN) each engine
- Speed: 350 knots (648 km/h) indicated air speed
- Range: 4,000 nautical air miles (7,408)
- Crew: varies with mission
- Date Deployed: December 1965
- Inventory: Active force, 1; ANG, 0; Reserve, 0
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