The Nymbus 650 Kickstarter Project was the result of a licensing agreement between CUVR and Gary Gress of Gress Aerospace and the University of Calgary. Gress has been studying and experimenting with Gyroscopic Birotors for over a decade. As a researcher and holder of a United States Patent for VTOL Aircraft Control using opposed tilting of its dual propellers or fans, Gary desires to bring this technology first to the hobbyist. Gress’ unique technology has been featured on the Discovery Channel as well as showcased at the Ottawa’s Aviation and Space Museum in 2012.
The Nymbus 650 is an R/C VTOL birotor of comparable size and payload capabilities to a 600-class R/C model helicopter but without the liability, complex mechanics and noise associated with a large rotor. This aircraft has an empty weight of 5.5 lbs., a flight endurance of 12 minutes without payload, and uses two 13x8 3-Blade Master Airscrew propellers.
Endorsement Video
Comments
Sure thing. You're right about the bent motor supports. It's the angle that lets you take advantage of the gyro precession. If you were to take full advantage of the precession then the motors would tilt side to side instead of forward and back. Gyroscopic precession reacts quicker than thrust alone does so Gary's 45 degree tilt angle lets you get the initial kick from the gyro precession, then the thrust from the props takes over and keeps you moving in the desired pitch direction.
Thanks, yeah it's very stable in the videos. I see that the motor arms are bent forward so if the command is tilt the motor forward it's actually tilting it at an angle inward and forward. That must be how you get the precession to work for you. It's a bit of a brainteaser for me.
Like I said though, what I've ever seen of his design flying I always liked.
@Harry- I've used his system. What is special about his set up is that it is much more than code. It is Gary's unique use of mechanical gyroscopic precession to achieve pitch stability that makes it more stable than any other fixed pitch propeller Bicopter system out there.
Gary also offers a unique kit which saves time in getting the copter up and running which you won't find anywhere else. Most DIY bicopter builds I see usually fail to fly or do so less efficiently since they don't understand how to use Gary's set up.
I always liked that design. I wonder though what is really special when I see code examples are out there.