B-52H - The B-52H had the same crew and structural changes as the B-52G. The most significant upgrade was the switch to TF33-P-3 turbofan engines which, despite the initial reliability problems (corrected by 1964 under the Hot Fan program), offered considerably better performance and fuel economy than the J57 turbojets. The ECM and avionics were updated, a new fire control system was fitted, and the rear defensive armament was changed from machine guns to a 20 mm M61 Vulcan cannon. A provision was made for four AGM-48 Skybolt ballistic missiles. First flight 10 July 1960, entered service 9 May 1961. This is the only variant still operational.

B-52H, 2nd Bomb Wing, Barksdale AFB, LA. (U.S. Air Force Photo)

Back to page 1...