The Nymbus 650 is an experimental VTOL aircraft developed through a licensing agreement. It uses a patented control method of tilting birotors to control pitch like the International Space Station and Hubble Space Telescope control gyroscopes. The Nymbus 650 is a prototype hobbyist aircraft 45 inches long designed to test an oblique tilting birotor configuration without the complexity of a large main rotor, producing 12 minutes of flight on 3S LiPoly batteries.

1. Nymbus 650 OverviewNymbus 650 Overview
Designed and Developed By
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2. The Nymbus 650 project was the result of a licensing agreement between CUVR andThe Nymbus 650 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.
Gary Gress is a holder of a US Patent (Patent number: 6719244). Patent title: VTOLGary Gress is a holder of a US Patent (Patent number: 6719244). Patent title: VTOL
aircraft control using opposed tilting of its dual propellers or fans
The patent covers the use of the propellers as gyroscopes for controlling the
aircraft in pitch. A component of their tilting is in the sideways or lateral
direction, and it is this component that generates gyroscopic pitch controldirection, and it is this component that generates gyroscopic pitch control
moments.
The control method is identical to that used in the International Space Station and the
Hubble Space Telescope, in which pairs of CMGs (control moment gyroscopes) tilt
The control method is identical to that used in the International Space Station and the
Hubble Space Telescope, in which pairs of CMGs (control moment gyroscopes) tilt
toward or way from one another to change the satellite's (pitch) attitude in space.
Without this method (i.e., if you were just tilting the props fore and aft forWithout this method (i.e., if you were just tilting the props fore and aft for
conventional thrust vectoring) its difficult to have a stable bicopter. You would have
to have very light props and a low aircraft center of gravity just to be marginally
stable.
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3. Gary Gress was recognized by the Ottawa Aviation and Space MuseumGary Gress was recognized by the Ottawa Aviation and Space Museum
Gary’s Nymbus and eVader 6D on display.
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4. The Nymbus 650 is an VTOL birotor of comparable size and payload capabilitiesThe Nymbus 650 is an 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. It is an Oblique-Tilting Birotor Aircraft.
The Nymbus 650 is currently designed as a hobbyist R/C aircraft for prototyping
and testing
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5. Performance
Operating Range-line of sight (increases with onboard camera feed)Operating Range-line of sight (increases with onboard camera feed)
Flight Time-12 minutes (without payload)
Physical Characteristics
Length-45” Width-16” Height-18"Length-45” Width-16” Height-18"
Weight-5.5lbs Payload Capacity-2lbs
Frame Construction-Carbon fiber landing struts
Fuselage - blow molded plastic fuselage (off the shelf R/C sailplane)
Power- LiPoly Battery, 3S (11.1V) 4000–12000 mAhPower- LiPoly Battery, 3S (11.1V) 4000–12000 mAh
*Note: Construction completed with 80-90% off the shelf
components
Optical
Flight Components
Two High Torque Digital ServosOptical
Visible-Optional (GoPro, LIDAR, FLIR, Infrared)
Communication
Flight Control-Two joystick controller using 2.4GHz spread
Two High Torque Digital Servos
Two 50-55A 400kv motors
CW and CCW Propellers, 13x8 3-Blade
Master Airscrew (1 puller, 1 pusher)
Flight Control-Two joystick controller using 2.4GHz spread
spectrum command and control
Autonomy-None
On board Flight Control
APM (Ardu Pilot Mega) controller
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6. Other Aircraft within the Gress Aerospace and CUVR, Inc. InventoryOther Aircraft within the Gress Aerospace and CUVR, Inc. Inventory
COPYRIGHT 2015 ALL RIGHTS RESERVED

7. For videos and more information, please visit ourFor videos and more information, please visit our
websites:
Gress Aerospace
http://www.gressaero.com/
CUVR, Inc.
http://www.cuvr.org/
We look forward to working with you and your team
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8. THANK YOUTHANK YOU
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