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NASA is using Exa's software to simulate full-scale aircraft acoustics. Image shows the radiated sound field from a business jet with flaps and main landing gear deployed.
  
From:
Application: NASA Pushes the Boundaries of CFD With PowerFLOW
Posted Mon February 09, 2015 @10:20PM
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Application Exa® Corporation, a global innovator of fluids simulation (CAE/CFD) solutions for product engineering, today announced that NASA is expanding its usage of Exa's PowerFLOW® software for the simulation of concepts to reduce aircraft noise within NASA's Environmentally Responsible Aviation (ERA) project.

PowerFLOW predictions were successfully validated against high-fidelity wind-tunnel tests in 2013, and now, after the cancellation of a planned flight test due to budget constraints, NASA is using PowerFLOW simulations of a full-scale aircraft with flap and landing gear noise treatments to reach the original airframe noise objectives of the project.

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