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Directory:Tilt Rotor by Blackhawk Project, LLC

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Image:Tilt-Rotor-Technology photo logo 300.jpg

Vertical Axis Wind Turbine with Articulating Rotor

"Patented, Proven and Production Ready"

Compiled by Congress:Founder:Sterling D. Allan

Pure Energy Systems News

April 16, 2010

The Blackhawk Project's Tilt Rotor Technology introduces a highly efficient method for inexpensively harnessing wind power. The blades have a wing shape, so they are propelled by the lift principle rather than push. The rotor angles automatically adjust or tilt to get the best attack.

The Blackhawk wind turbine represents the first fundamental innovation in vertical axis wind turbine (VAWT) technology since Darrieus (1939).

The fully articulating rotor tilt sets the airfoil angle of attack, enabling self-starting power generation without the noise, clutching, electronics, tower heights, heavy blades and significant expense often associated with horizontal axis, “propeller” wind machines. These adjustments are done through mechanical means, without the use of computers or other energy consuming devices.

Besides being a clean power producer, some of the advantages that the company lists for the technology include complementary integration with PV systems, ease of installation, low maintenance, and cost effectiveness.

The company has a portable design on a trailer that can be deployed in a few minutes, unfolding like an umbrella.

Official Websites





Image:TR-10 brochure cover 200.jpg

TR-10 Spec Sheet (pdf)

Rated output: 1.5 kW

Rotor Diameter: 10 ft.

Rotor Height (wings) 7 ft.

Swept area: 65 sq. ft.

Battery Charging: 24 or 48 Volt

Weight: 120 lbs

Cut-in Wind Speed: 7 mph

Rated Speed: 40 – 80 RPM

Direction of Rotation: Clockwise

Generator: Axial Flux Permanent Magnet Generator


Rapid Deployment


The RD-10 is a modification of the TR-10 wind turbine. Due to the unique patent pending design of the VAWT/AR (Vertical Axis Wind Turbine w/ Articulating Rotor), the unit is able to fold and unfold like an umbrella. Deployment and furling times are projected for 5 minutes, including lowering the trailer's stabilization feet (not shown). The unit will also have a set of cables for lateral stability that will be tensioned as the unit reaches its fully extended position. (YouTube September 15, 2009)


Blackhawk TR-10 at CAES


The Blackhawk TR-10 Wind Turbine (Pat. Pend.) running at the Center For Advanced Energy Studies (CAES) in Idaho Falls, ID. CAES is a collaboration of the Idaho National Laboratory, Idaho State University, and the University of Idaho. The unit was installed at CAES on September 26th, 2009. (YouTube Oct. 8, 2009)

Blackhawk AR-10 Tilt Rotor - Autonomous Test Station


The Blackhawk AR-10 (Pat. Pend.) has been installed for 5 months now at this location. The test cabinet shown has 2 deep-cycle marine batteries wired in series for 24V installed at its base. Two Xantrex C35's are used, one as a charge controller with a diversion load, and the second as a load controller to prevent over-discharge of the batteries. The load controller is capable of cycling the inverter off and on, but requires a relay due to the heavy start-up current of the inverter. Several minor upgrades such as chromoly wing support rods and teflon sleeving on the push-pull rods where they pass through the guides, have given us a very robust system we feel can run for several years without maintenance in the coldest and hottest environments. (YouTube February 14, 2009)


Image:US7677862 fig1 VAWT articulating rotor 150.gif

US 7,677,862 (PDF) – Vertical axis wind turbine with articulating rotor March 16, 2010

Abstract : A VAWT wind engine includes a support structure, an articulating rotor mounted on the support structure for rotation about a vertically extending axis, and at least one airfoil on the rotor for rotor-powering purposes. The articulating rotor is mounted in a manner enabling tilting movement of the rotor during rotation so that the airfoil produces rotor rotation and rotor tilt as the airfoil orbits the rotational axis. At least one mechanical linkage is included to actively vary airfoil pitch according to rotor tilt. The partially articulating rotor of a teetering-rotor embodiment seesaws up and down about a horizontally extending pivotal axis. The fully articulating rotor of another embodiment supports three airfoils as it tilts in any direction by virtue of a gimbal or other rotor hub assembly providing a 360-degree swiveling action, while furling hinges help protect the airfoils against damaging winds during wind engine shutdown.

Profile: The Blackhawk Project, LLC

The Blackhawk Project, LLC is a renewable energy company dedicated to improving wind energy technology. Blackhawk has developed a Vertical Axis Wind Turbine (VAWT) featuring a patent-pending, fully articulating tilt rotor.

Top 100 Self-Evaluation

On Apr. 17, 2010, Bruce Boatner, Inventor and Lead Engineer, provided the following evaluation in response to our question as to how they would rank their technology and company in relation to the Congress:Technology Criteria set forth by the There was an error working with the wiki: Code[1] listing.

I. Net Renewability [10] & [8]

i) Source of Energy: [10]

: Ubiquitous free energy source – wind.

ii) Materials: [8]

: Use of rare earth magnets, amortized over a very long period of time: generator magnets and components can be re-used essentially forever after manufacture. There are many other applications of the generator, including water wheels, etc. (re-tasking). The generator is essentially indestructible and the magnets maintain their usable strength for decades.

iii) Fossil fuel utilization: [N/A]

II. Environmental Impact [8]

Estimated overall (lack of) environmental impact:

From an operational standpoint, the technology:

Is exceptionally quiet, bird and wildlife friendly,

Has less visual impact on the landscape (site pollution),

Requires low installation infrastructure footprint

Requires less heavy machinery on site to install and maintain (lighter and can be assembled in smaller pieces)

Has a smaller transportation footprint (wings and components can be broken down and packed into a smaller space)

From a manufacturing standpoint:

No exotic methods or materials required, allowing flexibility in the production approach, and the ability to manufacture anywhere

Substitutions of most of the component materials can be implemented to accommodate environmental concerns.

III. Cost [6]

Note 1: The Blackhawk Project, LLC is currently in the process of negotiating a manufacturing and marketing agreement with a number of established U.S. entities. This process will by completed by May 18th, 2010, a week before the AWEA show in Dallas. The companies we have been working with bring a great deal of expertise in manufacturing cost estimation to the table – however we have not at this point nailed down the COGS for the several proposed unit sizes.

We are proposing that a TR-20 unit with a nameplate rating of 6kW as the initial market product. The estimation of $/kWh is based on captured costs of production for ten TR-10 prototype units, projected towards large-scale production of a TR-20 model.

Note 2: The Average Energy Output (AEO) calculations require knowledge of the average annual wind-speed in the subject area. For sake of argument, we will conservatively choose 12 MPH. Also, the average cost is energy in the U.S. is closer to $0.12/kWh, rather than $0.07/kWh. Here in Idaho we have the cheapest power in the nation, at about $0.06/kWh.

i) Estimated cost savings: [6]

For the TR-20 and 12 MPH average annual wind speeds, calculations are:

30,000 kWh/yr

$12K cost / 5 yrs = $2.4K/yr

$2.4K/30e3 kWh = $0.08/kWh

IV. Credibility of Evidence [8]

Units have been undergoing a field testing/hardening cycle since 7/08 (approximately 21 months). A test unit is installed at the Center for Advanced Energy Studies (CAES) facility in collaboration with the Idaho National Laboratory. The Blackhawk Project was approached by CAES and requested to participate in a program to allow post-graduate research projects at local universities relating to the VAWT/AR. The research director at CAES is on record regarding the future potential of the Blackhawk as “transformational technology”.

V. Stability/Reliability [8-9]

Units in the field have been hardened over an 18-month testing period and have withstood wind speeds of over 100 MPH without damage. Operating speed is in the 20 – 80 RPM range for the TR-20, which greatly extends the life of bearings. We will recommend an annual inspection, but are establishing a design goal of 2-3 years for the “casual owner”. Main components are automotive parts impervious to severe conditions.

VI. Implementation [10]

One of the principle concepts of the VAWT/AR technology is application in remote developing-country environments, where supplies, materials and skills are severely limited. The turbine is designed to continue operation in critical conditions despite significant damage (e.g. loss of one or more airfoils) and has been tested successfully in this mode. Mechanical skills on the level of the local bicycle repairman should be considered adequate for installation and maintenance of the units in the Third World.

VII. Safety/Danger to Persons [10]

Safety concerns would be considered minimal and not outside the parameters of normal precautions. Due to the slow rotational speed of the turbines, even an accidental impact could be considered non-life-threatening (speaking from experience). However, any work done on elevated platforms, with cranes, ladders and bucket-trucks, around overhead electrical lines, etc., must be approached with the utmost caution and safety concerns.

VIII. Politics of Science [10],[10],[9] & [10]

i) Encumbrance: [10]

Secured through patent, wholly owned by the partners of The Blackhawk Project, LLC.

ii) Key Personality and Associates [10]

(So what are we going to say?)

iii) Motivation Foundation: [9]

As the inventor/partner, I brought the Intellectual Property, my involvement, and 20+ years of product development experience to the table. It is my obligation to ensure that my investor/partner is able to recoup the considerable amount of resources that he has so generously contributed to this project.

In the future, I would always like to be able to recruit strong investment participation by pointing to the successes of my previous partners in similar ventures. Therefore, even if I wanted to personally, I am obligated to ensure certain basic obligations are met. Having said that, all of us on the project feel this is an idea that should rightfully take its place on the world stage, and we intend to do everything we can to make that happen.

As previously stated, this technology has always been targeted to areas of the world where energy is a scarcity. A strictly mechanical version of the VAWT/AR was built for an NGO in Houston, TX, as a means of pumping water. We built this prototype out of rough materials for $200, just to prove it could be done. In my mind, if an AK-47 can be built in a factory in Eastern Europe, sold to an arms merchant, shipped half-way around the world, and sold to a pirate in Somalia for $400, why can’t we figure out a way to build windmills that can pump water and save lives in Africa for $400?

iv) Team experience and involvement [10]

I have been working on this project for over 4 years and all of us on the team are determined to see it through to success.

IX. Open Source Conducive [5]

The patent is currently owned jointly by me and my business partner, co-owners of The Blackhawk Project, LLC. In order to secure the materials and expertise necessary to produce multiple CNC precision prototypes, a multi-million-dollar machine shop, many highly skilled machinists, and other support staff became a necessary part of the equation.

Besides my partner’s investments, I have invested the majority of my time working on the project gratis. In order for us to continue to produce meaningful work in any field of endeavor, it becomes necessary at some point to recoup at least a portion of one’s previous expenditures. We cannot then, for legal and logistical reasons, simply give away the farm. We can’t help anyone if we go broke.

Having been involved in 7 patents so far, I have been advised by my patent attorney that the notion that someone can build a unit for their own use and “not for commercial purposes” is patent infringement, regardless of whether their intention is to ever receive compensation from it. However, the best way to accomplish this end if so desired is to assign licensing rights on a royalty-free basis, such as for use by an NGO for charitable activities outside of the U.S. In this manner the same thing is accomplished, but in a more open and honest manner.

X. Stage of Device Development: [7.5]

Large scale assembly line manufacturing is projected to be underway within 6 months.

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Latest: Directory:Wind > Directory:Vertical Axis Wind Turbines > There was an error working with the wiki: Code[1] - The Blackhawk Project's Tilt Rotor technology introduces a highly efficient method for inexpensively harnessing wind power. The blades have a wing shape, so they are propelled by the lift principle rather than push. The rotor angles automatically adjust or tilt to get the best attack. (PESWiki April 16, 2010)

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Looks Good

On Apr. 15, 2010, New Energy Congress member, Congress:Member:Troy Helming, who is expert in wind technologies, wrote:

this passes my smell test…

Similar to Sailwing

On April 20, 2010, NEC member, Congress:Member:Andrew Ferrand Stobart wrote:

The Trimblemill [1978] used a "blade" based on lift rather than push.

Very effective, technology can be found here:

and more if you put "sailwing" into Google


B. Boatner, EE

The Blackhawk Project, LLC

Boise, ID, USA

phone: +1-925-695-5469

email: []

See also

Directory:Vertical Axis Wind Turbines



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Directory:Wind:Past Developments



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Directory:High-Efficiency Horizontal Axis Wind Turbines

Directory:Home Generation:Wind Turbine

Directory:Vertical Axis Wind Turbines

Directory:High Altitude Wind Power


Directory:Wind Augmentation

Directory:Power Via Atmospheric Pressure Differences


Directory:Humdinger Windbelt



Directory:Wind Power in the United Kingdom

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