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F-35 Replan Adds Time, Resources For Testing
Feb 7, 2011
By Graham Warwick, Amy Butler
Washington, Washington
Details of the revamped F-35 Joint Strike Fighter program are
emerging and showing that, despite more than nine years of work,
almost six years of challenging development and testing still lie
ahead for the Lockheed Martin-led project.
Both flight testing and software development have been replanned
using industry-standard productivity rates rather than the
aggressive—and unachievable—assumptions on which the original
program was built. This means many more sorties to refly flight-
sciences test points and for regression testing of mission-system
software changes.
The replan adds 2,000 flights to the program—for a total of 7,800,
just 600 of which have been completed—and extends development
testing to October 2016. In addition to more refly and regression
flights, the new plan adds sorties for test-pilot training and
builds in a 500-flight margin for unexpected flight-sciences and
mission-system issues.
For the mission system, the replan means more software development
engineers, more integration laboratory capacity—and more time. The
final software standard, Block 3C, is scheduled to be released to
flight test in June 2015. Of the 8 million lines of code on the
aircraft, ¡°we have 4 million to do, but we still have four years of
development,¡± says Eric Branyan, deputy general manager of the F-35
program. ÀÌÈÄ ±â»ç »ý·«
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Early Warning on JSF Delays
Posted by Bill Sweetman at 2/7/2011 10:01 AM CST
This morning, Graham Warwick and Amy Butler's story on detailed
changes to the F-35 flight test program goes live on the Check Six
page.
Highlights: Development testing is not now due to be completed
until October 2016, completion being marked by the end of testing on
Block 3 software. The new program will include 7,800 flights,
restoring the 2,000 test sorties that the JSF Program Office cut in
2007. See the full story for more detail.
In total, this represents a five-year delay since the program
started.
To take a more recent benchmark: in September 2008, the schedule
called for Block 3 development testing to be finished in mid-2013,
five years away. Today, that milestone is more than five-and-a-half
years off: in short, the JSF program has gone six to nine months
backwards in just over two years.
According to the Government Accountability Office's testimony of
last March, development costs in then-year dollars had increased
from a baseline of $34.4 billion on 2001 to $49.3 billion by that
time. This was revised upwards to $50.8 billion as part of last
year's Nunn-McCurdy review. The latest extension will cost an
additional $4.6 billion, bringing the total overrun to $21 billion
or 61 percent. ÀÌÇÏ ±â»ç »ý·«
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