Computational Fluid Dynamics
CFD, or Computational Fluid Dynamics, is a type of computer modeling researchers use to show where air molecules are pushed out of the way by a moving aircraft and generate noise.
These models can help engineers pinpoint the best places to alter an aircraft’s design in order to reduce noise. In the image to the right, the color red shows where the most sound is produced by an aircraft.
Watch a video on Computational Fluid Dynamics
Schlieren Photography
Schlieren photography was invented by the German physicist August Toepler in 1864 to study supersonic motion.
NASA Scientists use it to “see” the pressure waves caused by a flying aircraft pushing air molecules out of the way.
See More Schlieren Imagery
Wind Tunnels
Scientists use wind tunnels to test how models of aircraft will perform in flight.
Engineers built and tested several models of the X-59 before choosing its final design.
Watch a Video to learn more about wind tunnel testing for the X-59
What is a Sonic Boom?
When an airplane flies at or above the speed of sound, air molecules cannot move out of the way of the airplane fast enough, so the pressure waves combine to generate a large shockwave, which people on the ground hear as a sonic boom.
Watch to learn more about sonic boomsQuesst: The Science News
Stay up-to-date with the latest content related to the science from the Quesst mission.

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