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 | | From: | Craig Fink | | Subject: | Computing performance increase due to CG shift? | | Date: | Fri, 17 Dec 2004 14:13:58 -0800 |
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>>You'll find easy versions of the relevant formulas in Chapter 4 of
>>Performance of Light Aircraft, around page 112.
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> Is this one of the books google is going to scan?
No, my understanding is that they are only scanning material where the
copyright has run out. 100 years old or so. This is pre-Wright brothers.
To the determent of the Progress of Science and the useful Arts, Congress
keeps extending copyright protection. One can hardly say the getting the
Wright Brothers permission to print some of their work today is helping
promote progress.
To promote the Progress of Science and useful Arts, by securing for
limited Times to Authors and Inventors the exclusive Right to their
respective Writings and Discoveries;
http://www.csmonitor.com/2002/1009/p02s01-usju.htm
In 1790, "limited times" meant no more than 28 years. By 1976, Congress
had increased copyright coverage to extend over the lifetime of the author
plus an extra 50 years. And then in 1998, Congress extended copyright
coverage again by 20 more years.
Craig Fink
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