The public will have the opportunity Saturday to tour a NASA facility where the aerospace industry’s most advanced aircraft noise-reduction ideas are developed and tested.

NASA’s Glenn Research Center on Brookpark Road will offer four one-hour tours of its Aero-Acoustic Propulsion Laboratory. Known as the “Dome of Silence,” the facility is used to evaluate jet engine nozzle noise at simulated speeds up to 220 miles per hour.

The world-class test facility is 65-feet high and 130 feet in diameter. It has 17,000 two-foot-thick fiberglass wedges mounted on its walls and floor which prevent echoes and reverberations.

The tours, which begin at Glenn’s Visitor Center auditorium, take place at 10:30, 11:30 a.m., 12:30 and 1:30 p.m.

Reservations for the tour should be made by calling (216) 433-9653. Access to the NASA Glenn Visitor Center is limited to U.S. citizens.

More information about the tours can be found at NASA Glenn’s Web site.