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UPDATE #57 - March 26, 1999

PART 1: Upcoming Chats
PART 2: Project News
PART 3: Preliminary Data Review
PART 4: Subscribing & Unsubscribing: How to do it


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

Tuesday, March 30, 1999, 10:30 AM Pacific Standard Time:
Jason Brown, Safety Engineer

As the System Safety Engineer on the Wright Flyer Project,
Jason Brown makes sure that the equipment being used to drive the
airplane model's motor is safe, so that people don't get hurt
and the airplane doesn't get damaged. Rather than waiting for
equipment to fail, Jason tries to predict what may go wrong
equipment to fail, Jason tries to predict what may go wrong
before it happens. Based on these predictions, Jason then suggests
design changes or other safety measures that will eliminate or
control these hazards.

Read Jason Brown's profile prior to joining this chat.

Wednesday, April 7, 1999, 11 AM Pacific Daylight Time:
Anne Corwin, engineering aide

In addition to being an intern and a full-time student, Anne
assists the staff of the 40x80- and 80x120-foot wind tunnels
with anything they need help with. Since July, Anne has been
working on a large-scale software development project. She is
constructing a program in that will allow customers and users
of the wind tunnels to set up and plan out their tests in an
entirely electronic format.

Read Anne Corwin's profile prior to joining this chat.

Wednesday, April 14, 1999, 10 AM Pacific Daylight Time:
Mark Kilkenny, program planning specialist

Over the past 16 years, Mark has worked in administrative
positions for NASA. His current work focuses on John Glenn
Research Center's administrative and business operations. He
is responsible for conducting strategic planning for the center.
He also helps the center determine how well it is progressing
towards its long-term goals and objectives.

Read Mark Kilkenny's profile prior to joining this chat.

Tuesday, April 20, 1999, 9:30 AM Pacific Daylight Time:
Rich Coppenbarger, aerospace engineer
Rich develops hardware and software systems to help air
traffic controllers manage aircraft as they fly throughout the
nation's skies. One of the software programs he is developing is called
the CTAS, which helps air traffic move smoothly and without
delays. The CTAS is part of the Advanced Air Transportation
Technology (AATT) program, which is designed to help our
nation's air transportation system function better and more
safely, even with more aircraft flying in our skies.

Read Rich Coppenbarger's profile prior to joining this chat.

Tuesday, April 27, 1999, 11 AM Pacific Daylight Time:
Ray Oyung, research coordinator, Fatigue Countermeasures Program

Ray is part of a team that works in the Fatigue Countermeasures
Program. The team tries to find ways to reduce the effects of
fatigue, sleep loss, and disruptions to the body's internal
clock on flight crews during flight operations. Ray is also part of a
research team. As a member of the research team, Ray collects
data from experiments focusing on certain aspects of fatigue
and how they affect us.

Read Ray Oyung's profile prior to joining this chat.

Wednesday, April 28, 1999, 11 AM Pacific Time:
Phillip Luan, instrumentation engineer

Balances used in wind tunnel tests tell engineers how the
force of the wind affects the model. Phillip is responsible for making
sure that balances used for these tests are extremely accurate. He
also helps determine how electrical signals received during the
tests are related to the accuracy of the balances.

Read Phillip Luan's profile and learn more about the Balance Calibration
Lab prior to joining this chat.



March Creative Writing Contest

Welcome all entrants grades K-12! Think about what the 1903 Wright Flyer
Model feels like! A bit of anthropomorphizing just for fun!

For details go to

- - - - - - -
Wright Flyer Replica Wind tunnel Data Posted with Lesson Plans!

See five runs worth of data and use it with the lesson plans to gain an
understanding of the data.

Wind Tunnel Data Lesson Plans

Do you "Know all the Angles"? Learn about lift and drag! Grades 4-8

Why is it important to "Get the Wright Pitch"? and "Watch your Attitude"!
Grades 6-8

Getting "Up, up and Away" - learn what the Wright Brothers learned.
Grades 9-12


[Editor's Note: Henry Jex is an AIAA member who's had a long career in the aerospace industry. His profile is being edited and will be online soon at http://quest.arc.nasa.gov/aero/wright/team ]


by Henry Jex

March 19, 1999

Preliminary plots of key data reveal some interesting differences from
earlier unpowered model tests of a small-scale steel model. The billowing
of the actual fabric between ribs creates more wing camber (chordwise
curvature) as the lifting pressure increases at increasing
angle-of-attack, giving a higher lift-curve-slope.

Even though the propellers don't blow on any model surface, they produce
some consistent differences compared with props-off. The wing warping
scheme worked very well, and the fear of aerodynamic flutter of such a
torsionally limber wing structure was not realized.  The extremely
unstable properties of the 1903 Flyer were verified, and this proved that
the Wrights long practice in their gliders was an essential ingredient in
their success.

Additional data were obtained that will help us design a safer, "stand-off
scale" version of the Wright Flyer, which we hope to fly in 2003; 100
years later.

So this unique wind tunnel test of an exact, full scale replica of the
1903 Wright flyer fully proved the aerodynamic and structural ingenuity of
the Wright Brothers and the durability of their seemingly flimsy
chain-driven propellers. Their tough design flew for more hours in the
NASA Full Scale Wind Tunnel than in all of their flights of 1903 and 1904
put together!


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