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Wind Tunnel Tests Validate CFD Performance Predictions
Posted Tue November 15, 2011 @05:20PM
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News Bombardier Aerospace confirmed that final results of a three-phase wind tunnel test program provided further validation of the CSeries aircraft’s aerodynamic design.

They also support design predictions that the CSeries aircraft, optimized specifically for the growing 100- to 149-seat market, will deliver a step-change in fuel efficiency.


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Validation of the CSeries aircraft’s aerodynamic design included extensive use of state-of-the-art Computational Fluid Dynamics (CFD), made possible through the use of contemporary super-computers that are significantly more capable - and 100,000 times faster - than computers available when the aircraft currently serving the 100- to 149-seat market were designed. These tools permitted the minimization of interference drag and also facilitated the design of the engine nacelle and thrust reverser.

To simulate actual flying conditions, the wind tunnel tests were conducted with over 20 sophisticated scale models over more than 4,500 testing hours at facilities in Canada, France, Germany, the Netherlands, the United Kingdom and the United States.

“Simulated conditions during the wind tunnel tests closely correlate to real world flying conditions and the resulting data were used to improve and validate final CSeries aircraft design and systems,” said David Tidd, Vice President, CSeries Integrated Product Development, Bombardier Commercial Aircraft. “This latest achievement for the CSeries aircraft represents the most extensive and complex wind tunnel testing that Bombardier has ever conducted; it marks another key advance in the jetliner’s development.”

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