NWA DC9 - C Series article

[Superpilot92]

http://www.flightglobal.com/article...hwest-easyjet-praise-pws-geared-turbofan.html


Northwest, easyJet praise P&W's geared turbofan
By Megan Kuhn


More airlines have expressed interest in Pratt & Whitney’s Geared Turbofan (GTF) engine, the engine selected to power the Bombardier CSeries and the Mitsubishi Regional Jet.

UK budget carrier EasyJet and US major Northwest Airlines made their remarks in a P&W statement released following the engine maker’s next generation technology symposium in West Palm Beach, Florida.

Northwest was previously identified as a potential CSeries customer to replace the carrier’s fleet of aging McDonnell Douglas DC-9s

“The environmental benefits of the geared turbofan engine are significant and timely in the current world of exorbitant fuel prices and environmental sensitivity,” Northwest director of powerplant and component engineering Bob Pekarek.
He added: “I was impressed at how quiet the geared turbofan engine was at idle and full take-off power, requiring only minimal hearing protection and allowing the ability to hold a conversation while the engine was running at those high speeds. Typically, being that close to an engine at take off power requires maximum hearing protection and there is no chance of holding a conversation. The dramatically reduced fuel burn, noise and emissions of the geared turbofan engine are significant advantages.”
However, the SkyTeam alliance member and EasyJet stopped short of signing orders for a GTF-powered aircraft.
“It is truly impressive to see the amount of time, resource and money Pratt & Whitney is devoting to the geared turbofan engine program,” EasyJet strategic planning manager Hal Calamvokis says. “Considering the cost and environmental challenges facing this industry what we need is action-not talk-and I commend Pratt & Whitney for putting their money where their mouth is.”
P&W is completing Phase II ground testing on the GTF to determine engine performance and acoustic characteristics with a flight-capable nacelle system prior to mid-year flight testing. The demonstrator engine has logged about 200 hours since ground testing started.
As previously reported, US lessor International Lease Finance (ILFC) has indicated interest in becoming a launch customer for the CSeries and Lufthansa says it is “considering” the aircraft.
Source: Air Transport Intelligence News

C-Series

http://www.bombardier.com/index.jsp?id=3_0&lang=en&file=/en/3_0/3_8/3_8_1.jsp

 

[Pocono Pilot]

Thanks for the most boring post in the history of the internet.

And thanks for formatting it so nicely for us too. LOL

 

[Superpilot92]

Thanks for the most boring post in the history of the internet.

Thanks for your continued contributions to the forum

 

[~~~^~~~]

Geared Turbofans and their high speed, high power, planetary gear sets have always been tricky to engineer. What makes the C Series (and MRJ application) interesting is that it is a much lower power specification than what was contimplated by P&W.

Pratt thought that the engine would be used to power the next, next, generation 737 and A320 sized jets. So, they based their GTF on the 6000 core and 30,000+ lbs of thrust. However, neither Boeing or Airbus have any short term intention of building a replacement for these popular aircraft.

The GTF as it will actually fly is a 4/5th's scale down of the GTF that has been tested. Usually scaled down turbine engines are less efficient than their larger cousins. But, hopefully the gearbox and lubrication systems that are so tough to make reliable scale down easily.

Mitsubishi says their airplane & this engine will be 30% more efficient than the GE CF34-X engines flying on the E170. Bombardier has not make such large claims.

None the less, this engine and the C Series could be a real game changer. Delta's opinion is the one we need to hear since they will be acquiring these jets. Thus far, it seems like Delta is waiting for Boeing.

 

[Superpilot92]

Geared Turbofans and their high speed, high power, planetary gear sets have always been tricky to engineer. What makes the C Series (and MRJ application) interesting is that it is a much lower power specification than what was contimplated by P&W.

Pratt thought that the engine would be used to power the next, next, generation 737 and A320 sized jets. So, they based their GTF on the 6000 core and 30,000+ lbs of thrust. However, neither Boeing or Airbus have any short term intention of building a replacement for these popular aircraft.

The GTF as it will actually fly is a 4/5th's scale down of the GTF that has been tested. Usually scaled down turbine engines are less efficient than their larger cousins. But, hopefully the gearbox and lubrication systems that are so tough to make reliable scale down easily.

Mitsubishi says their airplane & this engine will be 30% more efficient than the GE CF34-X engines flying on the E170. Bombardier has not make such large claims.

None the less, this engine and the C Series could be a real game changer. Delta's opinion is the one we need to hear since they will be acquiring these jets. Thus far, it seems like Delta is waiting for Boeing.

The problem is Boeing has no real intention on building something like this in the near future. I know they talked about a New, New Generation 737 but built with 787 technology but it has yet to be seen. We shall see.

 

[Noserider76]

Looks like a nice product and we need that size airplane at mainline but I'd hate to see another fleet added to the mess we'll already end up with. Maybe the sheer bulk of the combined NW/DL can get BA to make this market a priority.

 

[Jiminmem]

The problem with waiting for Boeing is that they've stated that a 777 replacement is next followed by the 737. They claim the cost savings of the 787 would not translate as well in to a smaller airframe.

In the end they may lose the narrow body field to the former RJ makers.

 

[eightdriver]

Thanks for the most boring post in the history of the internet.

And thanks for formatting it so nicely for us too. LOL

Commuter puke just doesn't get it... sad.

 

[atpcliff]

Hi!

Bombardier claims that the Geared Turbofan will have 40% less emissions, make 40% less noise, and burn 40% less fuel than the most efficient engines in use today.

Not a moment too soon.

cliff
YIP

 

[Superpilot92]

Hi!

Bombardier claims that the Geared Turbofan will have 40% less emissions, make 40% less noise, and burn 40% less fuel than the most efficient engines in use today.

Not a moment too soon.

cliff
YIP

They just need to hurry up and produce the plane. They will have this market pegged and the majors would be ordering LOTS of them.