Hi, http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006875_1966006875.pdf
hesham ACCESS: USAP Senior Member Joined May 26, 2006 Messages 27,352 Reaction score 4,157 Sep 25, 2008 #1 Hi, http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006875_1966006875.pdf Attachments VTOL 1.JPG 60.7 KB · Views: 91 VTOL 2.JPG 32.2 KB · Views: 87