As air traffic continues to surge in the U.S., neighbors who live near airports are complaining about the escalating noise. All the while, the demand for faster aircraft that travel at supersonic speeds is accelerating.

To address the expected noise levels of future aircraft, NASA's Commercial Supersonic Technology project is already developing technologies focused on reducing the noise produced by an aircraft's engine exhaust.

Acoustics experts at NASA's Glenn Research Center in Cleveland recently used the center's Aero-Acoustic Propulsion Laboratory (AAPL) to complete an evaluation on a small-scale model of a Learjet engine exhaust, or nozzle, system.

The blue, curved array at the top of the AAPL dome held microphones for making the noise measurements and simulating a flyover. The large door to the right was opened to exhaust the air from the jet during tests.

"This recent test succeeded in creating a simulated environment which closely matched flight tests, and the results provide us with a unique opportunity to investigate how well noise levels produced in the lab can be compared with flight test noise data," says Research Engineer Dennis Huff.

Related Links
Aero-Acoustic Propulsion Laborator
Aerospace News at SpaceMart.com

Tweet

Thanks for being here; We need your help. The Space Media Network continues to grow but revenues have never been harder to maintain. With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords. Our news coverage takes time and effort to publish 365 days a year. If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceMediaNetwork Contributor $5 Billed Once credit card or paypal		SpaceMediaNetwork Monthly Supporter $5 Billed Monthly paypal only

Pentagon and Lockheed Martin deliver 300th F-35 aircraft
Fort Worth TX (SPX) Jun 13, 2018
The F-35 Joint Program Office and Lockheed Martin [NYSE: LMT] delivered the 300th production F-35 aircraft, demonstrating the program's continued progress and momentum. The 300th aircraft is a U.S. Air Force F-35A, to be delivered to Hill Air Force Base, Utah. "The F-35 weapons system is a key enabler of our National Defense Strategy and is providing our warfighters the combat proven, advanced capabilities they need to meet mission requirements," said Vice Admiral Mat Winter, program executive off ... read more