Pratt & Whitney's Geared Turbofan Demonstrator Engine Completes Phase I Ground Tests Ahead of Schedule

(East Hartford, Conn., February 14, 2008) -- Pratt & Whitney has successfully completed Phase I sea-level performance and acoustic testing on the full-scale Geared Turbofan(tm) demonstrator engine ahead of schedule. The engine will now be configured with the flight nacelle system for Phase II ground testing beginning in April in preparation for flight testing on Pratt & Whitney's 747SP flying test bed in mid-2008.

"The Geared Turbofan engine's performance has been outstanding and all initial test results have validated the game-changing benefits of this new product," said Bob Saia, vice president, Pratt & Whitney Next Generation Product Family. "The initial results surpassed our pre-test predictions, demonstrating the fuel burn, noise and emissions characteristics of this new architecture. We look forward to fully analyzing all of the data from these initial tests and entering into the next phase of the development program."

The Geared Turbofan demonstrator engine has logged a total of 130 hours since ground testing began in November 2007. Running from idle to full power, Phase I testing validated the design of the fan, low pressure compressor, fan drive gear system and thermal management system to demonstrate the Geared Turbofan engine's operational efficiency.

"Testing conducted to validate the thermal management system showed engine operating temperatures cooler than predicted," added Saia. "These test results will enable our design engineers to optimize the thermal management system to further reduce weight and simplify placement of external accessories on the engine."

Phase II of the Geared Turbofan engine's ground test program will continue in West Palm Beach, Fla., through May before being installed on Pratt & Whitney's 747SP flying test bed for flight testing.

Source : Pratt & Whitney

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