To Primary Index
~ Aerodynamic Rotor with a 1:1 ratio Motor
in its Hub ~
- A Principal Assembly that
consists of a rotor and motor, which is physically linked with a second
one by a frame and an electronic controller.
- To be used in twin-rotor vertical takeoff & landing
(VTOL) personal air
vehicles (PAV), which are;
- easy to fly,
- safe to fly,
- efficient to operate,
- economical to produce,
- low maintenance.
- Perhaps a forerunner in the
long-time quest for 'a helicopter in every garage'.
Drawing of Principal Assembly:
Overview of Principal Assembly:
- An aerodynamic rotor,
within which is located an electric motor and a torque-pitch thrust
- The slow rpm electric motor
provides the speed reduction,
- A coupling of the
of the torque and the blade twist to
provide faster responses to thrust demands.
- Directional control by weight-shift, where
response times are shortened due to the rigid rotors and the low
rotational inertia about the gimbal.
- Enhanced safety;
- Very few moving parts, due to
the elimination of a mechanical power train and minimal flight controls.
- A redundancy of the electrical
power and the electrical control systems.
- The provision of reserve
electrical power for the flare, should a forced autorotative ever come
- Alternative: The disk loading
is quite low. Therefore, autorotation to ground contact and then the
actuation of motor’s ‘brake-state’.
- Applicable, primarily, to the
symmetrical bilateral twin-rotor configurations:
DESIGN, MAKE &
differences between the above bilateral configurations may be little more than
the frame that connects the two rotors.
Also see; DESIGN: Electrotor-SloMo - Rotorhead
- Disk - Configuration Comparison
corrections and technical suggestions requested.
To do a
search on this web side;
- Go to Google.
- Enter into the search box [site:unicopter.com
followed by the desired search criteria.] Such as: blade; blade
AND pitch; blade OR pitch
| SynchroLite Home Page | Electrotor Home Page | UniCopter Home Page
| Nemesis Home Page | AeroVantage
displayed: July 23, 2006 ~ Posted to Rotary Wing Forum: September 28, 2006 ~
Posted on PPRuNe: June 23, 2007 ~ Last Revised: August 4, 2013
above utility invention is openly and publicly disclosed on the Internet to
negate an entity from patenting it, to the exclusion of all others whom may
wish to use it. ~ Reference patent law 35 U.S.C. 102 A person shall be entitled
to a patent unless - (a) the invention was known ... by others in this country, ..., before the invention thereof by the applicant for