CAD drawings of fully articulated coaxial rotor head with elastomer dampened flapping hinges and differential collective pitch yaw control. Here is a link to a coaxial with fully articulated head, Kamov "V-80" http://army.lv/image_descr.php?id=14...8&fullsize=yes
370mm diameter rotor coaxial. These stl files are intended for 3d printing in ABS, so the parts are a bit thicker than they would be for injection molding in ABS.
I 3D printed the parts in ABS, however these cad files are meant for CNC machining out of Aluminum.
tiltwing using the airscoot rc helicopter.
In hover the paraglider is aerodynamically oriented vertically to minimize drag . As the Tilt Rotor accelerates, the Stringless Paraglider free wing decreases in pitch and raises above the helicopter reorienting itself horizontally, adding lift. The rotors can be shut off and the Para-glider will glide with the helicopter as its payload. The glide ratio when the rotors are not spinning is about 5 to 1. More videos with improved glider design to come on my youtube channel. ...Continue Reading
The servo varies the range of free motion in the free wing's pitch axis (variable free wing)
The servo arm can be lowered to restrict the range in pitch motion or raised to allow the wing to "weathervane" in the headwinds. The cad files are a previous version of 40 lb coaxial I drew in Viacad (the new version with lighter weight rotor head and less space between the rotors is now at the top of my blog). Next I will draw the motor and servo mounts. The latest draft replaces the M4 at the end of the feathering spindle with an M5 among other things, estimated centrifugal force on each blade for 1meter blade at 1100 rpm is over 400 pounds! I am currently working on Fiberglass 3d printing which would allow me to print blade grips with enough tensile strength for this application. The next step will be to exchange the ABS extruder with and epoxy extruder. The ideal design for a Fiberglass 3d Printer would be a Stereolithography Fiberglass 3d Printer (Because STL uses photo-polymer expoxy), however Stereolithography machines are much more expensive than FDM systems....Continue Reading