Feedback: How does a plane stay in the air?

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Offline johnmuir

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Feedback: How does a plane stay in the air?
« on: 23/07/2011 07:56:21 »
source: http://www.thenakedscientists.com/HTML/podcasts/scrapbook/show/2011.07.12/

As a novice radio controlled plane pilot this did not seem to be correct. e.g. it failed to deal with planes flying upside down or on their side. I googled and quickly found that this is the "Equal Transit Time" fairy tale. Here is the NASA explanation:

http://www.grc.nasa.gov/WWW/K-12/airplane/wrong1.html

Now have a look at what RC planes can do with completely _flat_ wings:

http://www.youtube.com/watch?v=CaHop9mXZIE&feature=player_embedded

or outdoors

http://www.youtube.com/watch?v=Ei31rW3rwio

rather amazing, or not? It's also partly all down to the angle of attack, or more accurately the "decalage". Here is a fairly complete explanation of that topic:

http://www.av8n.com/how/htm/aoastab.html

I suggest that the video be withdrawn to keep the NakedScientists standards top of the line.

John

PS @Chris Please move to a different forum if this one is not appropriate
« Last Edit: 14/08/2012 10:10:46 by chris »