Instytut Lotnictwa Synchropter ABC Quiet Rotorcraft

[hesham]

Hi,

http://www.unicopter.com/1093.html

 

[hesham]

Hi,

if someone has this NASA report,can he send a more details about it ?.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19970040549.pdf