Thread: Discussion VECTOR UNITS - typology
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Old Feb 23, 2011, 01:39 PM
flying-llama is offline
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Quote:
Originally Posted by slebetman View Post
The very same mechanism (vector unit used vertically) was used by Ryan to test fly Rogallo wings: http://books.google.com.my/books?id=...page&q&f=false
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Yes. I remember that Rogallo wings also sometimes use this same mechanism.

Quote:
Originally Posted by slebetman View Post
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(I would also like to take this opportunity to thank whoever it was at Google who secured the rights to scan and archive old issues of Popular Mechanics and allow us to read them for free)
Side note: most copyrights expire after a period of time.
Determining that period may be tricky.
Here is one description (probably for US copyright law, not sure how applicable in other places):
http://inventors.about.com/od/copyri...expiration.htm
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