Date & Time
July 14, 2011 from 1:00 p.m. to 3:00 p.m.*
Department of Transportation (DOT)
Headquarters Building
1200 New Jersey Ave., S.E.
Washington, DC 20590
Oklahoma A-C Conference Room

Registration deadline is June 23. (registration is free)
Register here.

The Federal Aviation Administration (FAA) is conducting its fourth public meeting on civil supersonic aircraft research. The public meeting will include presentations on current research programs and a question and answer session for attendees. The purpose of the meeting is to raise public awareness of the continuing technological advancements in supersonic aircraft technology aimed at reducing the intensity of sonic boom.

The purpose of these meetings is to raise public awareness on advances in supersonic technology, and for FAA, the National Aeronautics and Space Administration (NASA), and industry to get feedback from interested persons.

Highlighting the effort to raise awareness, Gulfstream has supported FAA's public meetings by making its Supersonic Acoustic Signature Simulator II (SASSII) available for attendees to visit. The SASSII is a mobile audio booth designed and equipped to demonstrate the "Gulfstream Whisper," the aerospace company's latest effort to provide a solution to the traditional sonic boom.

A supersonic aircraft such as the Concorde in cruise produces a traditional jagged "N-wave" sonic boom pressure wave, resulting in a loud, jarring double boom on the ground as it passes by. Gulfstream's patented spike for controlling and reducing sonic boom transforms the traditional N-wave sonic boom into a smooth and more rounded pressure wave shaped roughly like a sine wave or a sideways "S". This change in the wave shape results in a softer sound that is quieter than the Concord sonic boom by a factor of 10,000. Gulfstream developed the mobile SASSII so others could experience this dramatic sound difference.

The simulator enables visitors to sense for themselves the dramatic difference in sound, reverberation, and intensity. Using a sophisticated, computer-based audio system, the acoustic engineer sends the audio feed into a sound booth where visitors can compare various sound signatures. Public involvement is essential in any future definition of an acceptable new standard that would allow supersonic flights over land. We anticipate that this will be one of many meetings informing the public on the continual developments in the research of shaped sonic booms and other technical and environmental challenges that need to be addressed in developing a new supersonic airplane.

*Attendees are encouraged to either come early or stay later to visit the Gulfstream Aerospace Corporation (Gulfstream) Supersonic Acoustic Signature Simulator (SASSII) that will be outside of the Department of Transportation (DOT) building prior to and after the public meeting.

Contact Information

Laurette Fisher
Federal Aviation Administration
800 Independence Avenue, SW.
Washington, DC 20591
Office: (202) 267-3561
Fax: (202) 267-5594
Sandy Liu
Office of Environment and Energy (AEE-100)
Federal Aviation Administration
800 Independence Avenue, SW.
Washington, DC 20591
Office: (202) 493-4864
Fax: (202) 267-5594