K12> How Airplane Wings REALLY Work -- Network Nuggets

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From: "nuggets ola" <nuggets@xxxxxxxxx>
To:  <networknuggets@xxxxxxxxx>
Sent: Thu, 30 Jan 2003 09:36:40 -0800
Subject: How Airplane Wings REALLY Work -- Network Nuggets
 
***  [[[  HOW AIRPLANE WINGS REALLY WORK  ]]]  ***

1. http://www.pbs.org/wgbh/nova/xplanes
2. http://www.amasci.com/miscon/miscon4.html#wing

This is for science teachers in any grade, when
teaching about the lift generated by airplane wings,
i.e. "how airplanes fly."

I know, I know, U.S. classified military technology
is not in the K-12 curriculum.  But when PBS sent
me their press release about next week's NOVA
segment on the X-Planes, I checked the new Website
(#1 above) to see what it offered.  Aha -- it gives
you an opportunity to correct your science textbook!

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On the home page is a small Flash demo "Getting
Airborne" on how wings lift an airplane. Unlike
what's probably in your textbook, it does *not*
invoke the Bernoulli principle to say low pressure
above the wing provides lift.

See site 2 above for more explanation about this.
The Bernoulli effect is present, but not providing
the lift. Site 2 is by Bill Beatty, an engineer at
the University of Washington (Seattle) whose hobby
is correcting science that is outdated or just
wrong, yet still published in school textbooks.  
While Mr. Beatty does not provide a fleshed-out
alternate lesson plan, he gives improved analogies
and diagrams from which you can tell your students
the honest story on how planes fly. I especially
like his "disk balloons" explanation.

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