Lockheed F-35 Testing Exceeded 2010 Goals, Tester Says
By Tony Capaccio - Jan 12, 2011 Lockheed Martin Corp.s F-35 fighter
jet slightly exceeded its flight-test goals last year, according to the Pentagon testing office in a new report.
The three variants of the programs aircraft flew a total of 427 test sorties, or 37 more than planned, says Michael Gilmore, Pentagon director of operational test and evaluation, in his annual report released today.
Cumulatively, the test program also accomplished 4,614 test points, or individual objectives, within those flights, or 210 more than planned, Gilmore wrote.
Goals were met by the Air Force and Navy versions but not the Marine Corps short-takeoff and vertical landing version, said Gilmore. That model flew 216 sorties out of a planned total of 254. Lockheed Martin officials have acknowledged throughout the year that the Marine model was behind schedule.
Purchases through 2016 of the Marine Corps version were cut to 50 from 110, reflecting two years of additional development testing, Defense Secretary Robert Gates said last week. He directed that aircraft be put on a two-year probation.
The Marine model is experiencing significant testing problems that could lead to a redesign of the aircrafts structure and propulsion -- changes that could add yet more weight and more cost to an aircraft that has little capacity to absorb, Gates told reporters on Jan. 6.
Overall, the test report indicated progress over 2009, when all three models flew only about 10 percent of their planned test flights because of delays in delivering aircraft.
Sixteen of 168 planned flights were completed in fiscal 2009, the second year of flight testing.
Last year, through Dec. 10, the Air Force version flew 155 sorties, or 46 more than planned, and the Navy version flew 24, or three more than planned.
Lockheed spokesman John Kent, asked to comment on the report, said, We are pleased with the overall performance of each F-35 variant and the progress weve made with flight testing over the past year.
The type of component-level problems weve identified in the F-35 short-takeoff and vertical landing variant are typical of early test aircraft in a development program, Kent said. This slowed down flight testing for this variant, but we developed and implemented solutions that have allowed us to accelerate the flight tempo of our STOVL jets, and we have made significant progress over the last few months,