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ADTO # 68 - June 25, 1999

PART 1: Upcoming Chats
PART 2: Project News
PART 3: Examining the Wright Flyer
PART 4: Subscribing & unsubscribing: how to do it!


Have you always wanted to chat but not had time to practice or test it

NASA QuestChat project manager, Oran Cox invites you to practice
chatting with him.

He's scheduled a practice chat  for June 29, 1999
For more information visit: http://quest.arc.nasa.gov/qchats/


Prepare for the High Speed Civil Transport Test!

Did you love following the Wright Flyer Wind Tunnel Test?
Well we've got a great test coming up in July, 1999. It's another test of
the model of the High Speed Civil Transport model that was tested here
last in 1997.

Future travelers may use this new type of aircraft, designed by NASA, to
traverse the globe in a matter of hours. The High Speed Civil Transport
promises to be the fastest airliner ever conceived, reaching speeds four
times that of the Concorde, delivering passengers in Tokyo three hours
after departure from San Francisco.

Here's what you can do to get ready for this test:

Read Mina Cappuccio's Profile: Mina is the main researcher on this test.
Read Fanny Zuniga's journals from the last HSCT test in the
12 foot pressure wind tunnel. Find out what happened the last time the
HSCT model was here!

[Editor's Note: Jim Stevenson is an experimental psychologist, who is also blind. His research is about acoustic displays of data for the Human Factors Division. Listen to Jim's interview or read his bio at http://quest.arc.nasa.gov/aero/team/stevenson.html ]

Exploring the Wright Flyer

by Jim Stevenson

April 14, 1999

Jim's interview is available in streaming audio. To listen to it you need
to have Real Player installed on your computer. From the download site
linked below look for the reference to the free RealPlayer. Once you have
located the form that allows you to download the software, the information
that you provide will instruct the server to provide you with the
appropriate version of software for your computer and connection
to the Internet.
  Connectivity Required: 28.8 Kbps modem
  Software Required: RealMedia Player http://www.real.com

Once you have installed the free player, you can hear the interview with
Jim Stevenson at http://quest.arc.nasa.gov/ltc/ram/jimSteve.ram
What follows is the text transcript of the interview.

I have been interested in aviation since I came to NASA twenty-five years
ago. I have read a lot of books on aerodynamics and the equations of
flight. I have had the opportunity to explore a lot of models.

I read an article quite a few years ago in Scientific American about the
Wright Flyer. I had forgotten some of the details I had forgotten that the
canard was in front, and that the pilot just lies on the wings next to the

The Wright Flyer is very unstable. I am amazed that any one could fly it.
With the control surfaces in front and the awkwardness of the control
surfaces and the engine drive system is far from optimal. It's an engine
driving two propellers with bicycle chains rather than a faster engine
driving the shaft of the propeller. I was surprised how big the Wright
Flyer was, with its forty-foot wingspan.

I had touched cloth biplanes before that part wasn't new to me. The layout
of the control surface and the engine layout were the big surprises to me.


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