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ATO # 92 - January 14, 2000

PART 1: Upcoming Chat
PART 2: Project News
PART 3: Latest Wind Tunnel Test to Advance Civil Tiltrotor Technology


UPCOMING CHATS

QuestChats require pre-registration. Unless otherwise noted, registration
is at:  http://quest.arc.nasa.gov/aero/chats/#chatting


Tuesday, January 18, 2000, 10 AM - 11 AM Pacific
Aerospace Team Online QuestChat with Larry Young

Larry is a researcher who studies helicopters and tiltrotor airplanes.
He tries to make them quieter so they can help solve airport congestion.
He also brainstorms ideas for helicopters in space!   

Tuesday, January 25, 2000, 10:30 AM -11:30 AM Pacific
Aerospace Team Online QuestChat with Gavin Botha

Not only does Gavin have lots of experience with low speed aerodynamics,
he also flys radio operated sailplanes.


PROJECT NEWS

Sneak preview the "Regimes of Flight" a new resource for
targeted for grades 4-8. You will find background material, lesson plans,
chats and contests!! For more information see
http://quest.arc.nasa.gov/aero/events
 

The Website will officially open in two weeks.

[Editors Note: Larry A. Young is an aeromechanics engineer. He is looking for ways to make civil tiltrotors quieter. Read his biography at http://quest.arc.nasa.gov/aero/team/young.html ]

LATEST WIND TUNNEL TEST TO ADVANCE CIVIL TILTROTOR TECHNOLOGY

L.A. Young

December 29, 1999

Just before the holidays, on December 21, 1999, NASA Ames engineers
and technical support personnel installed the Full-Span Tilt Rotor
Aeroacoustic Model (FS TRAM) in the 40-by-80 Foot test section of the
National Full-scale Aerodynamics Complex (NFAC). The NFAC, located
at NASA Ames Research Center at Moffett Field, CA, is a world premier
low-speed aerodynamics and acoustics research facility, and boasts, in
addition to the 40-by-80 test section, the world's largest wind tunnel
test section (the 80-by-120 Foot Wind Tunnel).

TRAM is a newly developed research facility that will enable the improved
understanding and advancement of tiltrotor technology, with emphasis on
noise reduction for a future generation of civil tiltrotor aircraft. TRAM
is two test stands in one: an isolated rotor configuration, which has been
previously tested in the Duits-Nederlandse Windtunnel in The Netherlands
in 1998 (when the NFAC was undergoing an acoustic modification/upgrade),
and a Full-Span configuration, which will be tested for the first time in
the NFAC.

In its full-span configuration (dual rotors with an airframe) the TRAM is
approximately a 1/4-scale representation of the Bell-Boeing V-22 Osprey  
tiltrotor. After baseline aeroacoustic testing in the NFAC in 2000,
advanced quiet rotors will be tested in later years on the full-span TRAM
test stand.

Hopefully one day, in part through the successful efforts of the TRAM test
team, taking a ride home for the holidays on a civil tiltrotor aircraft  
will be a commonplace event.

You can see pictures of the TRAM at

http://quest.nasa.gov/aero/team/fjournals/young/ly12-29.html
 
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