The painstaking effort to write the complex software for the F-35 may slow development of the fighter jet, the Air Force’s top uniformed officer said.
Air Force Chief of Staff Gen. Norton Schwartz said his service’s version of the tri-service stealth fighter is showing “good software stability,” but also that he was worried that the Joint Strike Fighter program might not be able to finish and test the software on time.
That might cause the software to become “the pacing item in terms of the development schedule,” Schwartz said last week at a conference hosted by Credit Suisse.
JSF program officials don’t dispute that, but say they have added extra time and more software engineers to stave off delays.
“The schedule and resourcing has been adjusted to address the risks that we saw associated with those next steps,” Maj. Gen. C.D. Moore, deputy JSF program manager, said at the same conference.
The F-35 program has been producing software at a world-class rate, but bringing the various bits of software together and integrating it with other onboard systems has historically been problematic, Moore said.
Along with software, Schwartz said, the plane’s production schedule and technical glitches with the helmet-mounted display were his top concerns about the F-35A.
He also said the fighter was structurally sound but has a few aerodynamic “hot spots.” The aircraft continues to perform well in flight tests, exceeding both its planned time aloft and test points.
“From a performance point of view the platform looks solid, but there a couple other aspects that are worrisome,” he said.
Schwartz also questioned whether Lockheed Martin would be able to deliver aircraft as scheduled [emphasis added].
“The more fundamental issue is the ability of the factory floor to produce machines on time and with minimum change work and so forth,” he said. “I’ve been disappointed in the fact that the schedule has continued to slip. We had a plan for nose-to-tail exchange between legacy aircraft and the F-35. That plan has been upset. … It’s a pain in the ass.”
He implored Lockheed Martin to “deliver what they promised.”
The JSF program office said that the program is keeping to its revised schedule...