Hi,
does anyone hear about this Dutch designer,and his old VTOL aircraft or vehicle in 1933 ?.
http://kulturserver-nds.de/home/hubt...GUN7x9T3Z7.pdf
Hi,
does anyone hear about this Dutch designer,and his old VTOL aircraft or vehicle in 1933 ?.
http://kulturserver-nds.de/home/hubt...GUN7x9T3Z7.pdf