Posts Tagged ‘Rolls Royce engine failures’

Dreamliner delayed again and Qantas dramatics continue – now with B747 engines

January 19, 2011

Boeing has delayed the Dreamliner again — for the seventh time!

The Telegraph reports:

Boeing told investors on Tuesday that the 787 will now be delivered to launch customer All Nippon Airways in the third quarter of the year, rather than the first, after a fire on one of the test planes in November. All test flights were suspended for six weeks after the fire.

The 787, which seats 210 to 250 passengers and has a list price of $202m, promises to be the company’s greenest and most efficient airliner yet and uses advanced composite materials to achieve these savings. However, technical problems have pushed the aircraft behind schedule and it is now into its third year of delays. Boeing is under pressure to deliver the 787, which has become the company’s fastest-selling airliner.

Shinichiro Ito, the president of All Nippon, said last week the airline is having a “hard time” dealing with the delay. Boeing has secured 847 orders for the 787, which took its maiden flight in December 2009. Boeing insisted the latest setback will not have a “material impact” on its results, something investors appeared to agree with.

Meanwhile Qantas experiences further problems with its Rolls Royce engines . AFP reports on two Boeing 747 Qantas flights with engine problems:

A Qantas passenger jet bound for New York made an unscheduled stop in Fiji after it developed a problem with one of its engines, the Australian airline said Wednesday.

Qantas said flight QF107, a Boeing 747, carrying 375 passengers from Sydney to New York via Los Angeles, touched down in Nadi on Tuesday for repairs to a fuel valve supplying one of its engines…..

…… The hitch comes just days after another Qantas Boeing 747, QF11 to Los Angeles, experienced a contained engine failure on the runway of Sydney airport due to a turbine blade defect.

Media reports on that incident said that passengers heard “a loud bang” and saw black smoke pour from the affected engine, with the captain reportedly telling those on board that the engine had “cooked itself” over the plane’s intercom.

The “contained”  engine failure is the more serious issue. The Boeing 747 long-reach aircraft flown by Qantas uses  Rolls-Royce RB211-524G-T engines. The “T” at the end signifies that it includes some of the Trent modifications. The Trent 900 engines are used on the Airbus A380s while the Trent 1000 is  planned for the Boeing Dreamliner.

A Trent 1000 experienced an uncontained failure on the test-bed last year while the Trent 900 has had an uncontained failure and a number of other difficulties on the A380.

Related:

https://ktwop.wordpress.com/2010/09/28/rolls-royce-trent-1000-fix-is-defined/

https://ktwop.wordpress.com/2010/10/25/in-flight-failure-of-rb-211-524-engine/

https://ktwop.wordpress.com/2010/11/04/qantas-a-380-suffers-in-flight-rr-trent-900-engine-failure/

https://ktwop.wordpress.com/2010/11/05/trent-900-vs-gp7200-competitive-pressures-getting-too-hot/

https://ktwop.wordpress.com/2010/11/07/further-boeing-dreamliner-delays-and-rolls-royce-shares-feeling-the-heat/

Qantas pushes its Trent 900 engines harder than other airlines

November 9, 2010

It would seem that while there may well be a fundamental issue with the Trent 900 as used by Qantas, the manner in which Qantas operates the engines may be a significant contributing factor. Sources indicate that Qantas run their engines “harder” than the other Trent 900 users (Singapore Airlines and Lufthansa) primarily, it seems, for economic reasons. Competitive pressures on airlines as well as those on the engine makers may be coming into play.

Reuters:

 

Qantas cracking the whip too hard? (image:aerospaceweb.org)

 

Qantas Airways  is reviewing the way it operates its A380 planes after last week’s engine blowout, a source said on Tuesday, amid reports that it worked its Rolls-Royce  engines harder than other airlines.

Qantas operates its A380 engines at higher thrust levels, which could result in resonating vibrations that cause oil lines to crack, The Australian newspaper said. The higher maximum thrust setting is used on some Qantas A380 take-offs on long-haul routes between Los Angeles, Sydney and Melbourne than other operators such as Singapore Airlines, the daily said, quoting unnamed engineers. However, the extra thrust setting of 72,000 pounds remained 3,000 pounds below the engine’s design limits and within operating guidelines, it added.

Chief Executive Alan Joyce said on Monday that its engines had a “slightly higher level of power” than those used in Singapore Airlines or Lufthansa planes, but they were certified to operate at those levels. The way Qantas operated the engines was part of a wider review, said an airline source, who was not authorised to talk publicly about the matter. “The operations are one of the things Qantas are reviewing along with the components,” said the source.

Qantas, which declined to comment on the report, said on Friday it suspected a material failure or a design issue may have caused last Thursday’s engine failure over Indonesia which forced the aircraft to make an emergency landing in Singapore.

Qantas grounds all A 380 flights following in flight failure of RR Trent 900

November 4, 2010

Reuters:

Qantas Airways suspended flights of its Airbus A380s on Thursday after one of the aircraft was forced to land in Singapore with engine trouble, one of the most serious incidents for the world’s largest passenger plane in its three years of commercial flight.

Qantas, which operates six A380s, said it was grounding the aircraft pending a full investigation. “We will suspend all A380 takeoffs until we are fully confident we have sufficient information about (flight) QF32,” Qantas Chief Executive Alan Joyce told reporters in Sydney.

 

Main Image

Indonesian police examine fallen debris from a Qantas jet collected from several areas on Batam island, an Indonesian territory near Singapore November 4, 2010. :Credit Reuters/Stringer

 

Singapore Airlines also uses Rolls Royce Trent 900 engines in its A 380s.

Related posts on Rolls Royce engine failures:

https://ktwop.wordpress.com/2010/11/04/qantas-a-380-suffers-in-flight-rr-trent-900-engine-failure/

https://ktwop.wordpress.com/2010/10/25/in-flight-failure-of-rb-211-524-engine/

https://ktwop.wordpress.com/2010/09/28/rolls-royce-trent-1000-fix-is-defined/


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