The aircraft will be manufactured in three variants -- a conventional takeoff and landing (CTOL) for the U.S. Air Force, a carrier variant (CV) for the U.S. Navy, and a STOVL for the U.S. Marine Corps and England's Royal air force and navy.
Last F-35B STOVL test jet takes flight
FORT WORTH, Texas, 2 Feb. 2011. The last Lockheed Martin [NYSE: LMT] F-35B Lightning II assigned to developmental flight testing departed Naval Air Station (NAS) Fort Worth Joint Reserve Base for its first flight. Known as BF-5, the short takeoff/vertical landing (STOVL) jet will ferry to NAS Patuxent River, Md., later this year, where it will join four F-35Bs and one F-35C carrier variant aircraft currently undergoing testing.