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A380 oil leak due to faulty bearing box
Source: Agencies |
November 13, 2010, Saturday
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Print Edition
Print Edition
AN Airbus executive said yesterday that Rolls-Royce has identified a faulty bearing box as the cause of the oil leak problem implicated in the midair disintegration of an engine on one of the world's largest airliners, an Australian newspaper said.
Airbus Chief Operating Officer John Leahy told reporters in Sydney that Rolls-Royce had at some point fixed the bearing box on newer versions of the massive Trent 900 engine, a model designed for the massive A380 superjumbo. He said Rolls was now fixing it on older versions. The Herald Sun reported his comments on its website.
The box in question contains the metal ball bearings that allow movement of the drive shaft that powers jet engines. Investigators have said they suspect that leaking oil caused a fire in the engine of a Qantas A380 that led it to disintegrate over Indonesia last week, sending pieces of metal into the wing and cutting vital safety systems before the jetliner landed safely in Singapore.
They have focused on broken pieces of the engine's heavy turbine disc, a plate that holds the blades moving air through the motor.
"In the future the computer will have software that can identify a problem at the outset and it will shut down an engine before a turbine disc can go out of control and come apart," Leahy told the Herald Sun.
Rolls-Royce Group PLC said in an update to investors yesterday that the disintegration of the engine resulted from a problem in a specific component in the Trent 900.
Leahy said the new models of the Trent 900 had been redesigned to cut excess oil causing turbine fires. He said Rolls-Royce was putting new parts on the older versions.
Airbus Chief Operating Officer John Leahy told reporters in Sydney that Rolls-Royce had at some point fixed the bearing box on newer versions of the massive Trent 900 engine, a model designed for the massive A380 superjumbo. He said Rolls was now fixing it on older versions. The Herald Sun reported his comments on its website.
The box in question contains the metal ball bearings that allow movement of the drive shaft that powers jet engines. Investigators have said they suspect that leaking oil caused a fire in the engine of a Qantas A380 that led it to disintegrate over Indonesia last week, sending pieces of metal into the wing and cutting vital safety systems before the jetliner landed safely in Singapore.
They have focused on broken pieces of the engine's heavy turbine disc, a plate that holds the blades moving air through the motor.
"In the future the computer will have software that can identify a problem at the outset and it will shut down an engine before a turbine disc can go out of control and come apart," Leahy told the Herald Sun.
Rolls-Royce Group PLC said in an update to investors yesterday that the disintegration of the engine resulted from a problem in a specific component in the Trent 900.
Leahy said the new models of the Trent 900 had been redesigned to cut excess oil causing turbine fires. He said Rolls-Royce was putting new parts on the older versions.
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