AeroVantage

		AeroVantage
▬	▬▬
Coaxial	Tandem
for Speed	for Lift	The advantages of an Effective Aerodynamic Disk Area	To Primary Index

Overview:

~ 1x2 ~

Cruise ~ Single Counterrotating PropRotor							Hover ~ Dual PropRotors

~ 2x4 ~

Cruise ~ Twin Counterrotating PropRotors		Hover ~ Quad PropRotors

A Transition Mechanism:

The Currently Preferred Method

Additional Transition Mechanisms under Consideration

The Objective:

A VTOL aircraft that is aerodynamically superior to other existing and proposed craft. This is due to the generation of a low velocity thrust from a large disk area during hover and a high velocity thrust from a small disk area during cruise.

To aerodynamically reduce the EFFECTIVE total disk area of the PropRotors in cruise by 50% from their PHYSICAL total disk area in hover. Thereby creating a PropRotor VTOL craft that has;

A greater figure of merit in hover then current tilt-rotors, and
A faster speed and greater efficiency in cruise then current tilt-rotors.

See; Effective Aerodynamic Disk Area

Primary Grouping:

Overview of 1x2

Overview of 2x4

Concerns & Tasks

DESIGN, MAKE & BUY: ~

PropRotor	Motor	Weight & Balance
Fuselage & Wing	Power Train	Dimension, Area & Drag
Landing Gear	Transition Mechanism	Trim, Stability & Control
Instrument	Control (Flight & Power)	Vibration Analysis
Electrical	Power Storage	Special Tool

OTHER:

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

Initially displayed: January 30, 2008 ~ Posted on PPRuNe; January 31, 2008 ~ Posted on Rotary Wing: January 31, 2008 ~ Posted on Eng-Tips: February 1, 2008 ~ Latest revision; May 17, 2010

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.