Fri, Dec 11, 2009
Engines Performed Well At Numerous Power Settings
Boeing successfully completed the first engine runs for the
747-8 Freighter on Tuesday. The milestone marks another step in the
747 program's steady progress in preparing for flight test.
"We are very pleased with the engines' performance during this
test," said Mo Yahyavi, vice president and general manager of the
747 program. "The engines and all the systems performed as
expected."
Engine runs began slightly before 1000 (PST) Tuesday. During
initial engine runs, the engines are started and operated at
various power settings to ensure all systems perform as expected.
The engine run test began with the auxiliary power system providing
power to start the first of four General Electric GEnx-2B engines.
The remaining three engines were started using the cross-bleed
function.
Basic systems checks continued throughout the test. The
engines were powered down and inspected and will be restarted
following a technical review. The team completed a vibration check
and monitored the shutdown logic to ensure it functioned as
expected.
"This milestone is an exciting one for the GEnx-2B team and we
anticipate the engines will continue the same high performance that
we have experienced in our ground and flight tests," said Tom
Brisken, general manager of the GEnx Program at GE Aviation.
The GEnx-2B engine is optimized for the 747-8. It helps provide
customers with improved fuel efficiency, reductions in emissions
and noise and a lower cost of ownership.
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