Rolls Royce Trent 1000 fix is in place

RR Trent 1000 cutaway

On August 2nd a  production standard ‘Package A’ Rolls-Royce Trent 1000 engine suffered an engine failure while on the test stand at the company’s Derby, UK facility. The ‘Package A’ engines do not incorporate upgrades planned for the ‘Package B’ engines, which will bring the specific fuel consumption target within 1% of planned spec. The failure – which has been described as an “uncontained failure” – of the Trent 1000 engine, which powers the Dreamliner, resulted in “limited debris being released into the test facility,”
At the time a Rolls-Royce spokesman rejected speculation that the unavailability of the engine that Boeing required was related to the incident earlier this month at one of its test facilities in Derby, England, saying the events were “unrelated,” though he declined to elaborate.

Aviation Week: Rolls-Royce says it is already testing an upgrade to the Trent 1000 engine to mitigate a component problem that caused a failure of one of the turbofans this month. The engine maker suffered a Trent 1000 engine failure this month on a test stand in Derby, England, with the powerplant in a sea-level testbed configuration at high power. The engine suffered an intermediate pressure turbine-related failure because of what is being called an “inappropriate operating regime.”

Rolls officials note that ground and flight trials have not been affected, nor is the miscue expected to affect the larger 787 schedule. Rolls supplies the Trent 1000 to Boeing 787 lead customer All Nippon Airways.

Although some elements of what transpired are understood, a Rolls-Royce official notes that “we are now investigating in detail and have made good progress in understanding the issue.” The company was aware of the issue, so later model Trent 1000 builds already have a fix in place, which is now also being installed on engines built to the earlier standard.

The grapevine as to what transpired on August 2nd points to an oil fire in the high pressure compressor drum leading to a failure of the intermediate pressure (IP) shaft. One industry source says once the IP shaft failed, the mounted IP turbine disk moved rearward, causing its blades to impact the low pressure (LP) turbine inlet guide vanes. The result was the separation of the IP turbine disk, which subsequently spun out of the casing and into the test stand.  The same source adds that the “non-adherence to test procedures” was the root cause of the failure, saying that the “stand crew ran more cold starts in close succession than allowed without purging of fuel and oil that accumulate within the engine in places these fluids are not supposed to be.”

Bloomberg reports today that Boeing delayed the 787’s first delivery last month for the sixth time, saying Rolls-Royce wasn’t going to be able to supply an engine needed to finish flight testing. A $17 million Trent 1000 blew up during testing on Aug. 2, forcing Rolls-Royce to close the plant for repairs to the Derby, England, site used to test engines for the 787 and the Airbus SAS A350.

Dreamliner with RR Trent 1000 engines

Boeing Co. said Rolls-Royce Group Plc has a remedy for the August blowout of a jet engine for the 787 Dreamliner aircraft and the two companies will discuss it in meetings in Seattle this week.

A Rolls-Royce team will brief Boeing on a plan that supports the latest target for delivering the delayed Dreamliner at the beginning of next year, Boeing Commercial Airplanes President Jim Albaugh said. Boeing parked one of its five Dreamliner test jets earlier this month to replace one of its two Rolls-Royce Trent 1000 engines that had experienced a power surge before takeoff. Albaugh said a fix is already in place to address the issue, which Boeing has said was unrelated to the engine blowout.

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13 Responses to “Rolls Royce Trent 1000 fix is in place”

  1. Lediard Says:

    Bloomberg sem to have it in for RR. I don’t doubt for one moment that RR will hold up the Dreamliner program. RR as a company is ultra-professional, operating (genuinely, without hype) to the highest engineering and ehical standards.

  2. Mauro Says:

    May I use the trent cutaway in my textbook ?

  3. In flight failure of RB 211-524 engine « The k2p blog Says:

    […] The Rolls Royce Trent 1000 engine designed for Boeing’s Dreamliner has had some initial tesing setbacks which seem to be fixed but which has caused some of the delays to the Dreamliner. […]

  4. Qantas A 380 suffers in-flight RR Trent 900 engine failure « The k2p blog Says:

    […] RR Trent 1000 destined for Boeings Dreamliner has had some problems during testing. […]

  5. Breaking: Qantas grounds all A 380 flights following in flight failure of RR Trent 900 « The k2p blog Says:

    […]   […]

  6. Qantas grounds all A 380 flights following in flight failure of RR Trent 900 « The k2p blog Says:

    […] […]

  7. Trent 900 vs. GP7200: Competitive pressures getting too hot? « The k2p blog Says:

    […] this competitive pressure leads to innovation is – I think – beyond doubt. But the Trent 1000 has had an “uncontained” explosion on the test bed. The Trent 900 has had one in […]

  8. Rolls Royce honing in on problem: share price slide halted « The k2p blog Says:

    […] to the Trent 900 engine (and perhaps just the Qantas Trent 900 engines) and unconnected with the earlier test bed incident on a Trent 1000. The share sell-off which continued on Monday morning was halted and the share price had recovered […]

  9. Rolls Royce faces 3 different engine issues as Singapore Airlines changes engines on 3 A 380s « The k2p blog Says:

    […] though Rolls Royce has said that the issues with the Trent 1000 are entirely different and have been fixed, there remains the issue of whether the Trent based improvements when introduced into the RB211-524 […]

  10. Dreamliner delayed again and Qantas dramatics continue – now with B747 engines « The k2p blog Says:

    […] […]

  11. Pratt GTF Says:

    After 787 runway tests in Roswell, New Mexico in September 2010, four Rolls-Royce Trent 1000 engines had to be swapped out from the flight-test airplanes.
    Mechanics discovered cracked compresser blades.

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