ELECTROTOR SloMo		To Primary Index
~ Aerodynamic Rotor with a 1:1 ratio Motor in its Hub ~

Objective:

• 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,
• transportable,
• 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 control.
• 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 about.
• 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:

Primary Grouping:

DESIGN, MAKE & BUY:

Principal Assembly:

Sub-component Assemblies:

Rotorhead

Control - Flight

Control - Electric

Motor

Concerns & Tasks

Peripheral Assembles:

Frame

Fuselage

Power Storage

~

Special Tool

Complete Craft:

Intermeshing - SloMo

Interleaving - SloMo

Side-by-Side - SloMo

Quadrotor - SloMo

Coaxial - SloMo

· The physical 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

OTHER:

Aerodynamics	Intermeshing Information	Miscellaneous
Flight Dynamics	Helicopters - Outside	Regulations
Mechanics	Helicopters - Inside	Composites
Electrics & Magnetics	Rotor Concepts:	CNC Workstation

Additions, corrections and technical suggestions requested. ~ jackson.dave@shaw.ca

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

Introduction Page | SynchroLite Home Page | Electrotor Home Page | UniCopter Home Page | Nemesis Home Page | AeroVantage Home Page:

Initially displayed: July 23, 2006 ~ Posted to Rotary Wing Forum: September 28, 2006 ~ Posted on PPRuNe: June 23, 2007 ~ Last Revised: December 12, 2012

The 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 patent.