Thursday, May 20, 2010

B-52 Stratofortress

The Boeing B-52 Stratofortress is a long range, subsonic, jet powered strategic bomber operated by the United States since 1955. Its design came from a straight-wing aircraft powered by six turboprop engines. This aircraft first flew on April 15, 1952 with Tex Johnston as pilot.

The 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 (15,166.6 meters). It can carry nuclear or precision guided conventional ordnance with worldwide precision navigation capability. In a conventional conflict, the B-52 can perform strategic attack, close-air support, air interdiction, offensive counter-air and maritime operations. During Desert Storm, B-52s delivered 40 percent of all the weapons dropped by coalition forces. It is highly effective when used for ocean surveillance, and can assist the U.S. Navy in anti-ship and mine-laying operations. Two B-52s, in two hours, can monitor 140,000 square miles (364,000 square kilometers) of ocean surface. All B-52s can be equipped with two electro-optical viewing sensors, a forward-looking infrared and advanced targeting pods to augment targeting, battle assessment, and flight safety, thus further improving its combat ability. Pilots wear night vision goggles, or NVG, 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 lights-out environment.

With a gross weight of 488,000 pounds, the B-52H is even today one of the heaviest offensive military aircraft operated by any nation in the world. Maximum speed of the B-52H is 639 miles per hour at 20,700 feet, or a Mach number of 0.91, and cruising speed is 525 miles per hour. Mission radius is 4,480 miles with a weapons load of 10,000 pounds. Many other combinations of payload and range are, of course, possible. Range is, of course, greatly increased by in-flight refueling. The B-52 was originally designed for high-altitude weapons delivery over the target. Like the B-47, however, the increasing effectiveness of enemy antiaircraft defenses required the development of low-altitude high-speed penetration tactics for the B-52. Again like the B-47, the B-52 has suffered from its share of structural fatigue problems. To cure these problems, many modifications have been made to the aircraft during its long-lived career. 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 all are assigned to Air Combat Command. 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 which was launched from B-52G models during Desert Storm.

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