0
Este tópico está trancado. =/
PICTURES: Airbus prepares A340-600 testbed for GTF ground runs
By Max Kingsley-Jones
Airbus has completed the installation of Pratt & Whitney's PW1000G geared turbofan demonstrator engine on its A340-600 flying testbed in Toulouse.
Initial ground test runs are due to begin early next week, with a first flight expected later in the week. The A340 is due to fly a two-month, 75h flight-test programme with the GTF engine replacing the Rolls-Royce Trent 500 engine in the No 2 position.
Airbus says it is working with "all the major engine manufacturers and plans to conduct similar tests with them in the coming years". It adds that such tests will enable it "to validate the fuel burn and emissions that could be achieved with each new engine technology".
Fonte: Flight International
Veja fotos no link a seguir: http://www.flightglobal.com/articles/2008/...round-runs.html
Aproveitando, segue a notícia também da Flight International sobre a fase de testes imediatamente anterior à mencionada acima, realizada pela própria P&W e com algumas informações sobre o motor em questão que é o PW1000G:
First phase of GTF flight testing complete
By Jon Ostrower
Pratt & Whitney has completed the first phase of flight testing for its Geared Turbofan-PW1000G demonstrator as it prepares for test flights with Airbus in September.
The "PurePower" PW1000G GTF amassed 43.5 hours over 12 flights that demonstrated the handling characteristics and overall performance of the engine up to 40,000 feet and .85 mach, exploring the full flight regime up to redline at 30,000 lbs of thrust.
The test programme, which began 11 July, included a robust package of accelerations and decelerations, high angle of attack takeoffs and other manoeuvres, including wind up turns, as well as the starter assist and windmill relight capability of the engine.
Phase one focused on short range aircraft performance in preparation for applying the lessons learned to the Mitusbishi Regional Jet and Bombardier CSeries, both expected to enter service in 2013.
The engine "met our prediction of what the ground to altitude relationship would be" and P&W has an improved understanding of the "geared components in terms of optimizing the engine for fuel [burn]," P&W VP of next generation product family Bob Saia tells Flight premium affiliate ATI.
P&W achieved "near double-digit" improvements in fuel burn on the demonstrator and validates the 12-15% improvement the manufacturer hopes to deliver in service. In addition, Saia adds that P&W is "on the path to hit the maintenance cost values we've committed to for ANA and Lufthansa," launch customers for the MRJ and CSeries.
P&W identifies three objectives for the two-month, 75-hour flight test programme with Airbus, which is set to kick-off in the second half of September on a A340-600 test bed.
First, validate the data from the 747 test bed by repeating phase one conditions. Second, explore the acoustic characteristics, not done in phase one because of the older and significantly louder P&W JT9Ds on the 747. Finally, "work closely with Airbus" to determine the ideal design for mounting engine components on the pylon to improve the aerodynamic characteristics.
The engine is scheduled for handover to Airbus during the 3rd week of August.
Airbus has distanced itself from any suggestion that its role in GTF flight testing implies future usage on a commercial platform, though Airbus EVP for Programmes Tom Williams said recently it would take 24 to 30 months to develop a GTF-powered A320 if the airframer decides to do so.
P&W says it is "on track" for the new PurePower engine family and expects detailed design work to begin when the demonstrator flight testing is complete.
The non-geared PW810 engine core will begin ground testing in mid-2009, followed in December by testing for the MRJ's PW1217G and 1st quarter 2010 for the CSeries PW1524G. For the PW1000Gs, twin 40-50 hour flight test programmes are planned for the mid 3rd quarter of 2010 and "a few months later" on the PW1217G and PW1524G respectively.
By Max Kingsley-Jones
Airbus has completed the installation of Pratt & Whitney's PW1000G geared turbofan demonstrator engine on its A340-600 flying testbed in Toulouse.
Initial ground test runs are due to begin early next week, with a first flight expected later in the week. The A340 is due to fly a two-month, 75h flight-test programme with the GTF engine replacing the Rolls-Royce Trent 500 engine in the No 2 position.
Airbus says it is working with "all the major engine manufacturers and plans to conduct similar tests with them in the coming years". It adds that such tests will enable it "to validate the fuel burn and emissions that could be achieved with each new engine technology".
Fonte: Flight International
Veja fotos no link a seguir: http://www.flightglobal.com/articles/2008/...round-runs.html
.....................................................................................................................
Aproveitando, segue a notícia também da Flight International sobre a fase de testes imediatamente anterior à mencionada acima, realizada pela própria P&W e com algumas informações sobre o motor em questão que é o PW1000G:
First phase of GTF flight testing complete
By Jon Ostrower
Pratt & Whitney has completed the first phase of flight testing for its Geared Turbofan-PW1000G demonstrator as it prepares for test flights with Airbus in September.
The "PurePower" PW1000G GTF amassed 43.5 hours over 12 flights that demonstrated the handling characteristics and overall performance of the engine up to 40,000 feet and .85 mach, exploring the full flight regime up to redline at 30,000 lbs of thrust.
The test programme, which began 11 July, included a robust package of accelerations and decelerations, high angle of attack takeoffs and other manoeuvres, including wind up turns, as well as the starter assist and windmill relight capability of the engine.
Phase one focused on short range aircraft performance in preparation for applying the lessons learned to the Mitusbishi Regional Jet and Bombardier CSeries, both expected to enter service in 2013.
The engine "met our prediction of what the ground to altitude relationship would be" and P&W has an improved understanding of the "geared components in terms of optimizing the engine for fuel [burn]," P&W VP of next generation product family Bob Saia tells Flight premium affiliate ATI.
P&W achieved "near double-digit" improvements in fuel burn on the demonstrator and validates the 12-15% improvement the manufacturer hopes to deliver in service. In addition, Saia adds that P&W is "on the path to hit the maintenance cost values we've committed to for ANA and Lufthansa," launch customers for the MRJ and CSeries.
P&W identifies three objectives for the two-month, 75-hour flight test programme with Airbus, which is set to kick-off in the second half of September on a A340-600 test bed.
First, validate the data from the 747 test bed by repeating phase one conditions. Second, explore the acoustic characteristics, not done in phase one because of the older and significantly louder P&W JT9Ds on the 747. Finally, "work closely with Airbus" to determine the ideal design for mounting engine components on the pylon to improve the aerodynamic characteristics.
The engine is scheduled for handover to Airbus during the 3rd week of August.
Airbus has distanced itself from any suggestion that its role in GTF flight testing implies future usage on a commercial platform, though Airbus EVP for Programmes Tom Williams said recently it would take 24 to 30 months to develop a GTF-powered A320 if the airframer decides to do so.
P&W says it is "on track" for the new PurePower engine family and expects detailed design work to begin when the demonstrator flight testing is complete.
The non-geared PW810 engine core will begin ground testing in mid-2009, followed in December by testing for the MRJ's PW1217G and 1st quarter 2010 for the CSeries PW1524G. For the PW1000Gs, twin 40-50 hour flight test programmes are planned for the mid 3rd quarter of 2010 and "a few months later" on the PW1217G and PW1524G respectively.
