Here is the Chinook (Boeing CH-47):
here is the Osprey (Bell-Boeing V-22):
and here is a hybrid design, something eliminating some weaknesses / drawbacks of both:
Instead of supporting “tilting” engines and transmissions at the ends of the wings (as the Osprey does) the engines / transmissions are secured on the fuselage and the only that is tilting is a rotor / propeller at the nose of the airplane and another “pusher” rotor / propeller at the tail of the airplane (counter-rotating at takeoff, and rotating at the same direction at cruising).
The red spheres are CVJ’s (constant velocity joints) characterised by:
100% constant velocity joint,
low friction,
over +/-60 degrees operating angles,
high torque capacity,
heavy axial load capacity,
and vibration-free operation,
say,
as the following PatDan CVJ (stereoscopic animation):
a plastic prototype (3D-printed) of which is shown at operation in the following two youtube videos:
[video=youtube_share;6w9vOgXtngk]https://youtu.be/6w9vOgXtngk[/video]
https://youtu.be/gxAHSrZqABQ
Imagine a small home-built airplane capable for vertical take-off / landing (as a helicopter) and capable for cruising at high speed / high mileage as an airplane.
Thanks
Manolis Pattakos
here is the Osprey (Bell-Boeing V-22):
and here is a hybrid design, something eliminating some weaknesses / drawbacks of both:
Instead of supporting “tilting” engines and transmissions at the ends of the wings (as the Osprey does) the engines / transmissions are secured on the fuselage and the only that is tilting is a rotor / propeller at the nose of the airplane and another “pusher” rotor / propeller at the tail of the airplane (counter-rotating at takeoff, and rotating at the same direction at cruising).
The red spheres are CVJ’s (constant velocity joints) characterised by:
100% constant velocity joint,
low friction,
over +/-60 degrees operating angles,
high torque capacity,
heavy axial load capacity,
and vibration-free operation,
say,
as the following PatDan CVJ (stereoscopic animation):
a plastic prototype (3D-printed) of which is shown at operation in the following two youtube videos:
[video=youtube_share;6w9vOgXtngk]https://youtu.be/6w9vOgXtngk[/video]
https://youtu.be/gxAHSrZqABQ
Imagine a small home-built airplane capable for vertical take-off / landing (as a helicopter) and capable for cruising at high speed / high mileage as an airplane.
Thanks
Manolis Pattakos
