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Hi,
the Jacobs 104 was unconventional helicopter project and may it was
submitted to convertiplane competition;
http://www.secretprojects.co.uk/forum/index.php/topic,636.0.html
http://www.flightglobal.com/PDFArchive/View/1953/1953%20-%200113.html
the Jacobs 104 was unconventional helicopter project and may it was
submitted to convertiplane competition;
http://www.secretprojects.co.uk/forum/index.php/topic,636.0.html
http://www.flightglobal.com/PDFArchive/View/1953/1953%20-%200113.html