According to this NASA Tech Brief,
Boeing has incorporated an array of NASA-developed software to analyze designs of its new Sonic Cruiser commercial jet. NASA Overset CFD Software, Chimera Grid Tools, and Pegasus 5 software all are being used
to perform computational fluid dynamics (CFD) analysis of the aircraft design, reducing the amount of wind tunnel testing that will be needed.
NASA Overset CFD Software has been used by Boeing over the past year to run hundreds of CFD calculations. Chimera Grid Tools contains a variety of tools for the Chimera overset grid approach for solving CFD problems. It also contains a program known as OVERGRID, which serves as a graphical user
interface to most of the package tools. PEGASUS 5 is a series of mesh interpolation codes for flow analysis problems.
Boeing's Sonic Cruiser is a long-range (6,000 to 9,000 nautical miles) commercial jet that will carry between 200 and 250 passengers, and fly at the mid-40,000-foot level or higher at speeds between Mach 0.95 and
Mach 0.98. It will have lower nitrogen oxide emissions than today's commercial airliners, and will be quieter than upcoming noise standards and current airport requirements.
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