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Encyclopedia :
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B-5 :
B-52 Stratofortress |
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B-52 Stratofortress
The Boeing B-52 Stratofortress is a long-range strategic bomber flown by the United States Air Force since 1955, replacing the Convair B-36. Although built for the role of Cold War-era nuclear deterrent, its conventional capabilities are these days the more important role in USAF operations, where its long range, heavy weapons load and fearsome reputation prove valuable. MissionAir Combat Command's B-52 is a long-range, heavy bomber that can perform a variety of missions. The bomber is capable of flying at high subsonic speeds at altitudes up to 50,000 feet (15 km). It can carry nuclear or precision guided conventional ordnance with worldwide precision navigation capability. FeaturesIn a conventional conflict, the B-52 can perform strategic attack, air interdiction, offensive counter-air and maritime operations. During Operation Desert Storm, B-52s delivered 40 percent of all the weapons dropped by coalition forces. All B-52s are equipped with an electro-optical viewing system that uses platinum silicide forward-looking infrared and high resolution low-light-level television sensors to augment targeting, battle assessment, and flight safety, thus further improving its combat ability and low-level flight capability. Pilots wear night vision goggles (NVGs) to enhance their vision during night operations. Night vision goggles provide greater safety during night operations by increasing the pilot's ability to visually clear terrain, avoid enemy radar and see other aircraft in a covert/lights-out environment. Starting in 1989, on-going modifications incorporates the Global Positioning System, heavy stores adapter beams for carrying 2,000 pound (900 kg) munitions, and a full array of advanced weapons currently under development. The use of aerial refueling gives the B-52 a range limited only by crew endurance. It has an unrefueled combat range in excess of 8,800 miles (14,000 km). The aircraft's flexibility was evident in Operation Desert Storm and again during Operation Allied Force. B-52s struck wide-area troop concentrations, fixed installations and bunkers, and decimated the morale of Iraq's Republican Guard. The Persian Gulf War involved the longest strike mission in the history of aerial warfare when B-52s took off from Barksdale Air Force Base, launched conventional air launched cruise missiles and returned to Barksdale -- a 35-hour, non-stop combat mission. During Operation Allied Force, B-52s opened the conflict with conventional cruise missile attacks and then transitioned to delivering general purpose bombs and cluster bomb units on Serbian army positions and staging areas. BackgroundFor more than 40 years B-52 Stratofortresses have been the backbone of the manned strategic bomber force for the United States. The B-52 is capable of dropping or launching the widest array of weapons in the U.S. inventory. This includes gravity bombs, cluster bombs, precision guided missiles and Joint Direct Attack Munitions. Updated with modern technology the B-52 will be capable of delivering the full complement of joint developed weapons and will continue into the 21st century as an important element of the U.S.'s military capabilities. Current engineering analyses show the B-52's life span to extend beyond the year 2045. B-52A first flew in August, 1954, and the B model entered service in 1955. A total of 744 B-52s were built with the last, a B-52H, delivered in October 1962. Only the H model is still in the Air Force inventory and is assigned to Air Combat Command and the Air Force Reserves. The oldest B-52 still flying was a B-52B that was built in 1955, though it also has the fewest flight hours of any surviving B-52. It was operated by NASA's Dryden Flight Research Center and was used for drop tests of various research aircraft until its retirement on December 17, 2004. On July 30, 2001, Dryden received a B-52H that is expected to fully replace the older B-model aircraft by the end of 2004. The first of 102 B-52H's was delivered to Strategic Air Command in May 1961. The H model can carry up to 20 air launched cruise missiles. In addition, it can carry the conventional cruise missile that was launched in several contingencies during the 1990s, starting with Operation Desert Storm and culminating with Operation Allied Force. The B-52 contributed to the U.S. success in Afghanistan, providing the ability to loiter high over the battlefield and provide Close Air Support (CAS) through the use of precision guided munitions. The long range and endurance of the B-52 provided a U.S. presence unmatched by any other combat aircraft. B-52's also played a key role in the third Gulf War in 2002-2003 (Operation Iraqi Freedom), where they provided close air support and bombing. The Air Force intends to keep the B-52 in service until around 2050, an unprecedented length of service for an aircraft model. This is especially amazing considering that the last plane was built in 1962; the Air Force fully expects to be flying 80-year-old airframes. Boeing recently suggested re-engining the B-52H fleet with the Rolls-Royce RB211 534E-4. This would involve replacing the eight Pratt & Whitney TF33s (total thrust 604.78kN) with four RB211s (total thrust 715.3kN.) This unsolicited proposal has so far met with little enthusiasm. The RR engines would increase the range/payload of the fleet and reduce fuel consumption, however the cost of the project would be significant. General characteristicsProduction
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