Trent 900 vs. GP7200: Competitive pressures getting too hot?

There are only two engines suitable for the A 380 – Rolls Royce’s  Trent 900 and its rival the GP7200 manufactured by the General Electric/Pratt & Whitney Engine Alliance.

Nov. 2012- Image updated: from http://www.enginealliance.com/engine_features.html

Engine Alliance GP7200: image http://www.enginealliance.com/

It is highly unlikely that the aircraft industry would ever allow a situation to arise where there was only one supplier of engines. A monopoly is something to be avoided at all costs in any purchaser / supplier arrangement. It follows that for the airlines and the airplane manufacturers that the market (in this case the number of A 380s) be split between the two suppliers such that:

  1. neither supplier gains a dominant market position such that it can dictate the engine price,
  2. each supplier has a large enough market share and sufficient earnings such that their continuation in the market is not jeopardised (for the sake of spares, service, development of new engines and, above all, to avoid a monopoly situation arising by the exit of one supplier).

Trent 900 cut away: epower-propulsion.com

If either engine supplier has an uncompetitive product – whether for price or for performance – the monopoly becomes inevitable and immediately jeopardises the continuation of the market itself. So if only one engine supplier was available, the A 380 itself becomes non-viable.

In this restricted market place, it would seem, a win-win situation should not be impossible. Yet the competition between the protagonists is intense and the technology boundaries are under constant pressure as each supplier tries to gain a competitive edge over the other. Each engine manufacturer knows that he will not be permitted to gain a market-dominant position. But the costs of engine development are so high that every little gain in market share is hotly pursued.

For the airline industry, fuel cost is a dominating cost element and even minute gains in fuel efficiency are well worth pursuing. The intense competition between the two engines for the A 380, is centred around fuel efficiency. The GP7200 is generally thought to have a 1% advantage. It also seems to be the strategy for the U.S. engine makers to constantly maintain this performance gap over their competitor as each tries to improve performance. The Trent 900 has a slightly higher thrust(about 3%) and prices are, of course, a closely guarded secret.

For fuel efficiency therefore it seems that Rolls Royce is playing catch-up. To get a decisive advantage each new improvement must be sufficient to go past the competitor – who in turn will introduce improvements to regain his advantage. But fuel efficiency is not easily gained.

  • Higher temperatures can give improved efficiency but lead to the need for new materials to handle the higher stresses at the higher temperatures,
  • reduced clearances can reduce leakage losses and increase efficiency but require increased manufacturing accuracy and can increase the possibilities of wear
  • more complex designs are devised where component positions can be changed during operation to optimise efficiency at different operating conditions but which increase the possibility of unwanted contacts within the engine.

That 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 flight.

The question that comes to mind is whether the competitive pressure and the quest for fuel efficiency has led to “too much – too quickly” for the Trent ?

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9 Responses to “Trent 900 vs. GP7200: Competitive pressures getting too hot?”

  1. Battle lines are being drawn: EADS + Airlines versus Rolls Royce « The k2p blog Says:

    […] The k2p blog knowledge to people Just another WordPress.com weblog « Trent 900 vs. GP7200: Competitive pressures getting too hot? […]

  2. eddie Says:

    Great article! More please.

  3. Qantas pushes its Trent 900 engines harder than other airlines « The k2p blog Says:

    […] Qantas pushes its Trent 900 engines harder than other airlines By ktwop 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. […]

  4. Trent 900: EASA relaxed its inspection directive which reduced inspection frequency « The k2p blog Says:

    […] I cannot help thinking also that when the number of players is limited (as with aircraft suppliers or engine manufacturers) that there is a point beyond which competitive pressure can become counter-productive. […]

  5. Trent 900: EASA relaxed its directive which reduced inspection frequency « The k2p blog Says:

    […] I cannot help thinking also that when the number of players is limited (as with aircraft suppliers or engine manufacturers) that there is a point beyond which competitive pressure can become counter-productive. […]

  6. What did Rolls Royce know and when? « The k2p blog Says:

    […] Investors are wary that the incident could cost Rolls customers. It is understood there are 22 A380s – bought by Qatar Airways, Kingfisher, Etihad and Air Austral – which are yet to decide whether to use the Trent 900 or a rival made by GE and Pratt & Whitney. […]

  7. antonio Says:

    In the end of the day performance retention may be a more valuable asset across the life of the engine. Three shaft designs tend to be more rigid and have better retention.

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

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

  9. Dennis Payne Says:

    Interesting comment about single supplier monopoly, this is the case for Mr Boeing one engine supplier for the B737 all current variants and also for the B777 so they are happy to take this gamble.

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