some feedback

here is a three dimensional Coanda jet biplane of 1910



https://www.4shared.com/rar/h1h_iP1-iq/ ... plane.html

http://s000.tinyupload.com/?file_id=244 ... 1409867103

here is a source of inspiration for the so called "secret weapons" of world war one:

http://0stratiotis0.blogspot.com/2016_0 ... chive.html