McDonnell F-101 Voodoo - Design and Development

Design and Development

Initial design on what would eventually become the Voodoo began just after World War II in response to a USAAF Penetration Fighter Competition in 1946 for a long-range high performance fighter to escort bombers, much as the P-51 Mustang had done in its time. After being awarded a contract (AC-14582) on 14 February 1947, McDonnell built two prototypes, designated the XF-88 Voodoo. The first prototype (serial number 46-6525), powered by two 3,000 lbf (13.3 kN) Westinghouse XJ34-WE-13 turbojets, flew from Muroc on 20 October 1948. Preliminary testing revealed that while handling and range was adequate, the top speed was a disappointing 641 mph (1,032 km/h) at sea level. After fitting McDonnell-designed afterburners to the second prototype, thrust was increased to 3,600 lbf (16.1 kN) with corresponding performance increases in top speed, initial rate of climb and reduced takeoff distance. Fuel consumption was greatly increased by use of the afterburners, however, reducing the range.

Although the XF-88 won the "fly-off" competition against the competing Lockheed XF-90 and North American YF-93, the detonation of the first nuclear weapon by the Soviet Union resulted in the USAF (created in 1947) reevaluating its fighter needs, with interceptors being more important and bomber escorts being of reduced priority, and it terminated the Penetration Fighter program in 1950. Analysis of Korean war missions, however, revealed that contemporary USAF strategic bombers were vulnerable to fighter interception. In 1951, the USAF issued a new requirement for a bomber escort with all major US manufacturers submitting designs. The McDonnell design was a larger and higher powered version of the XF-88, and won the bid in May 1951. The F-88 was redesignated the F-101 Voodoo in November 1951.