The Road to Number TEN.jpg Rolls-Royce

The Road to Number TEN

Rolls-Royce's latest Trent engine entered into service on Nov. 23.

Rolls-Royce’s Trent 1000 TEN has entered revenue service, almost seven years after the engine it is to replace, the Trent 1000 for the Boeing 787, did the same.

Although the manufacturer did not reveal the identity of the launch operator, three airlines – Norwegian, Scoot and Air New Zealand – have received Trent 1000 TEN-powered aircraft in the past week.

In an effort to overcome several performance and reliability issues, Rolls-Royce upgraded the Trent 1000 twice before the releasing the TEN.

The new engine incorporates a scaled version of the Trent XWB-84 compressor used in the Airbus A350, as well as other technologies developed on Rolls’ Advance3 demonstrator. It targets at least a 2% fuel-burn improvement over the current Trent 1000 Package C production configuration, production of which Rolls has transitioned to the TEN through 2017.

It will power the first 787-10, which is scheduled to be delivered to launch customer Singapore Airlines in May 2018, but will also become the standard production engine for all Rolls-powered 787s from 2017 onwards.

Flight tests of the Trent TEN began in December 2016 on a 787-8 test aircraft, and the engine achieved EASA certification in August 2017, also when the first production engines arrived in Seattle. The first 787-10 is scheduled to be delivered to launch customer Singapore Airlines in May 2018.

However, the start of the 787-10 test program came much later than originally planned. Rolls originally hoped to certify the Trent TEN before the end of 2015, and to enter service in late 2016. But design issues — one of which involved revising a weight-saving feature called ‘banded stators’ — pushed back FAA Part 33 engine certification.

To find out more about the TEN’s development, and the problems of the engine it replaces, see Guy Norris’ and Sean Broderick’s detailed investigation in Engine Yearbook 2018.

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