Pratt & Whitney's F135 propulsion system has accumulated more than 3,000h of system development and demonstration (SDD) testing.

The team is on track to deliver the first flight test engine for the F-35 Joint Strike Fighter (JSF) by the year's end.

To date, Pratt & Whitney has delivered three conventional take-off and landing/carrier variant (CTOL/CV) configuration and four STOVL configuration F135 engines to test for a total of seven engines in SDD ground testing.

Accelerated mission testing (AMT) has begun for both variants as altitude development testing and sea level testing continue. F135 ground test engines are on track to accumulate approximately 2,000 further SDD hours this year.

"The success of F135 testing reflects the unmatched maturity of this engine," says Bill Gostic, vice-president of F135 programmes for P&W.

"The F135 is constantly benefiting from lessons learned on the proven F119 core which has accumulated an unprecedented amount of ground and fight testing for the F/A-22 Raptor.

Source: Flight Daily News