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The Dome of Silence
August 2, 2014

Join the NASA Glenn Research Center for a tour of the Aero-Acoustic Propulsion Laboratory, and see where some of the world's most advanced aircraft noise-reduction ideas are developed and tested. The Aero-Acoustic Propulsion Laboratory is an acoustically designed dome. The dome’s unique structure protects residential communities from the laboratory’s high noise levels.  Unique in size and appearance, this world-class facility stands 65-feet high and 130-feet in diameter. It has 17,000 two-foot-thick fiberglass wedges mounted on its walls and floor. Designed to prevent echoes and reverberations, the wedges give the facility a futuristic, maze-like appearance.  The Nozzle Acoustic Test Rig,  one of three test rigs in the Aero-Acoustic Propulsion Lab, is used to evaluate jet engine nozzle noise at speeds up to 220 miles per hour.

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Tour buses depart from the Main Gate of NASA John H. Glenn Research Center at the following times:

 

  • 10:00 a.m.
  • 11:00 a.m.
  • 12:00 p.m.
  • 1:00 p.m.

Please note the following important guidelines:

 

  • Advanced registration guarantees admission to the tour that begins at the Briefing Center.
  • Access to the Saturday tour program is limited to U.S. citizens and Lawful Permanent Residents (LPRs).
  • All adult visitors are required to present government-issued photo identification, and LPRs are required to present their Permanent Resident Card. This includes bus drivers for scheduled groups.
  • NASA reserves the right to limit the use of cameras and cell phones during the tour.

More Information:
>  Facility Tour Schedule
> Glenn Research Center Events

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One of three test rigs in the Aero-Acoustic Propulsion Lab
One of three test rigs in the Aero-Acoustic Propulsion Lab, the Nozzle Acoustic Test Rig is used to evaluate jet engine nozzle noise at speeds up to 220 miles per hour.
Image Credit: 
NASA
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Page Last Updated: February 21st, 2014
Page Editor: NASA Administrator