Lakota Wind Generator

Wind power generating systems producing the maximum electricity at the lowest cost.

Bitterroot Solar features the Lakota Wind Turbine, the lowest cost, lowest noise, high performance wind turbine available on the market. With its quiet, efficient design, the Lakota is the optimum solution for your wind energy needs. Its structural integrity and inherently safe design make it the # 1 choice for home energy systems. Its carbon fiber blades and rare-earth permanent-magnet alternator result in a low-inertia turbine, capable of capturing more of the energy available from light or gusty winds. With prices starting below $1700 and rated at 900 watts @ 28.8 mph wind speed, and with 1300 watts peak, the Lakota is truly a state of the art wind turbine, and the product you will want to seriously consider for your energy needs.

$1590.00 with controller

Aeromag Stealth-Acoustic Carbon Fiber Blades
ť Aerospace Engineered
ť Lowest noise emission home system wind turbine blades available
ť Highest performance home system wind turbine blades available
ť Number One in safety and structural integrity
ť World leader in low rotational inertia high tip speed ratio

Wind Turbine Generator
ť Anodized Aluminum body with all stainless steel hardware
ť Rare Earth Neodymium Iron Boron Permanent Magnets
ť Lowest cost per watt ... Guaranteed!
ť High Power Density Generator Technology
ť Rated 900 watts at 28.8 mph, Peak rated at 1300 watts
ť Start-up wind speed at 6 mph
ť 12, 24, 48 Volt available, Lightweight 34 lbs. [17kg]

Tilt Tower Kits Available
ť Safest tower kits available, with easy step-by-step instructions.
ť 25 foot load transport tilt tower kit (TOW25)
ť 47 foot load transport tilt tower kit (TOW47)
ť Available in Standard Water Pipe or Compression Coupled
ť Marine tilt tower kits avaialble, call for details.
ť Certified Professional Engineer report available. Report# 990016

The Aeromag has a standard five year alternator guarantee (parts and labor)and SEVEN years on the aerospace quality carbon fiber blades!

Features

Rated 900 Watts Power Output at 28.8 mph
Peak 1300 Watts Power Output at 38+ mph
Start-up wind speed at 6 mph
Charges 1 Ampere (12 volt turbine) at 9 mph
Nominal 12, 24 & 48 Volt available
Can be optimized Low, Medium or High Average Wind Speeds (tell us in advance what you want)
Lightweight 34 lbs. (17kg)
Produces very little noise
Aluminum body with all stainless steel hardware
Rare Earth Neodymium Iron Boron Permanent Magnets
USCG approved tinned Copper wire for marine use
Self-governing Rotor Design
Permanently Sealed Unit
Special Marine Coating available (additional cost)

Blades

Precision, computer designed low inertia Blades
"Stealth-Acoustic" blade technology is very quiet and invisible to radar and no TV/radio interference
Helicopter leading edge tape on blades
7 times stiffer than steel, means no flutter, low noise, more energy
Smoother and far quieter than wood, plastic, injection molded or fiberglass reinforced blades
Can be optimized for Low or High Wind environments
Upward furling design does not hide from the wind
Produces full power even beyond 60 mph winds!
Extended warranty up to 7 years available

Lakota's Advanced Features

Aerospace grade, advanced technology, uni-directional Carbon Fiber Blades
Helicopter leading edge tape on each blade
Smoother and far quieter than wood, plastic, injection molded or fiberglass reinforced blades
Unprecedented 3 year warranty on the blades
Extended warranty up to 10 years available on the blades
Precision, computer designed aircraft quality rotor
Stainless steel hub plates

Specifications

Power Output for Sea Level Conditions:

300 Watt nominal at 16.5 mph
500 Watt nominal at 21.5 mph
900 Watt nominal at 28.8 mph
Peak Power maintained above 1200-1500 Watts at higher wind speeds
Users have reported over 1500 Watts at 100 Amps

Nominal 12, 24, 48 Volt

Lightweight 35lbs. (<16kg)

Rotor Diameter: 82.3 in (2.090 m)

Swept Area: 36.9 ft2 (3.43 m2)

Start-up Wind Speed: 6 mph (2.7 m/s)

Alternator: 3 Phase AC Brushless Permanent Magnet

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Monthly Power Production
Cautionary Note: Comparison of test curves and power data is highly dependent on location, tower height, turbulence, obstacles, humidity and other factors. Please consult an expert before drawing conclusions or accepting manufacturer claims. These charts shows the superior performance of the Lakota blade technology (see also Blades technology below). With a smaller diameter, light weight and very stiff blade technology and much lighter system Lakota out performs higher rated competitors in medium to high wind conditions. That's because Lakota does not hide from the wind but maintains it optimum performance throughout its entire flight envelop. Even above 40-50mph it continues to produce peak power in excess of 1500W and some users report up to 1800W at almost 100 amps without damage to either electrical or mechanical components. Rain, snow, sleet or storms the Lakota SC turbine is made to take it all and continue to put out the power.

In addition, since the blades are very light they can take advantage of wind gusts that heavier blades can't because their inertia is too high to react before the gust is over. Over time this amounts to considerable extra energy extracted from the same column of air.

Wind Turbine Performance in Different Regions

Wind Class	1	2	3	4	5	6	7
Average Wind Speed at Anemometer Hub Height	10.1	13.4	15.0	16.2	17.3	18.8	22.3
Average Wind Speed at Anemometer Hub Height	4.50	6.00	6.70	7.25	7.75	8.40	9.95
Monthly anticipated Energy Output in	99	197	250	290	324	364	432
Yearly anticipated Energy Output in	1147	2367	2995	3478	3890	4370	5180
Percent Operating Time	65.4%	78.8%	82.5%	84.6%	86.0%	87.1%	86.7%

This model uses a mathematical idealization of the wind speed probability. The validity of this assumption is reduced as the time period under consideration (ie, the wind speed averaging period) is reduced. This model is best used with annual or monthly average wind speeds. Use of this model with daily or hourly average wind speed data is not recommended because the wind will not follow a Weibull distribution over short periods. Your performance may vary. (Assumptions: Weibull Factor = 2.00, Wind Shear Exponent = 0.18, Turbulence Factor = 10 %, Site Altitude = 1000 m / 3300 ft, Anemometer Height = 10 m / 33 ft, Tower Height = 14 m / 47 ft)

TURBINE TECHNOLOGY

Power Generation:

The Lakota turbine uses an 8 pole, 36 slot, 3 phase alternator with 10 winding leads. This allows 4 separate field adjustable settings to be made that will optimize it's output and match it's performance to low, medium, high or severe wind regimes. Consult your authorized Lakota dealer for details.

The Lakota generator has a high power to weight ratio. It uses a single stator, rare-earth neodymium iron boron permanent magnet in a cast aluminum casing with stainless steel fittings. The upward furling mechanism ensures the Lakota will not "Hide" from high winds but continue to put out up to two times it's rated power without damage to its electrical or mechanical components. It's precision components are designed for long life. We recommend at least a 60-100 amp DC circuit breaker be used with all installations.

Lakota turbines are sealed units and require only annual inspection. No lubrication or overhaul maintenance schedule is required during the life of the generator. (approx. 15-20 years). Marine or desert installations may need more attention to surface corrosion and leading-edge tape on the blades. Helicopter grade leading-edge tape is replaceable if abraded by fine debris or sand. Lakota field units have survived 120mph storms while other units nearby have self-distructed. Vehicle mounted test units continue to output maximum power at over 70mph with no damaging effects.

Blades:

Lakota's aerospace grade uni-directional carbon fiber blades are not to be confused with carbon matrix or carbon reinforced plastic blades. Unlike plastic with powdered carbon blades that bend and flutter, the carbon fibers in the Lakota blades are 7 times stiffer than common steel, and carry the loads from tip to root. This allows the Lakota to harness far more energy annually than comparable similar wind turbine generators. In addition, the increased output substantially lowers the overall cost of energy despite a slightly higher initial purchase price.

Coatings:

The Lakota SC has a special UV stabilized titanium dioxide, linear polyurethane aircraft coating that protect the unit from rain, snow, ice, sun, sand and dust, wind and corrosion.

Regulation and Control:

The electronics perform several functions to ensure maximum output and safety for the user. The regulation control maintain a load on the alternator at all times preventing turbine overspeed, regardless of the charge condition of the battery. You may select among a variety of Regulation and Control Device from cost effective Rectifier Module to advanced Manual or Automated Load Divergence Center to professional Wind Turbine Flight and Battery Charge Controller. If your application requires a quiet and powerful wind turbine and is in a place with low as well as potentially high winds, then consider the AEROMAG LAKOTA^TMStealth Acoustic from AEROMAX.

TURBINE PERFORMANCE

Power Output:
Sea Level: 900 Watt nominal at 28.8 mph
500 Watt nominal at 21.5 mph
Peak Power maintained (up to 1200-1500Watts) in all wind above 30mph
Users have reported over 1500Watts at 100Amps

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Monthly Power Production
Cautionary Note: Comparison of test curves and power data is highly dependent on location, tower height, turbulence, obstacles, humidity and other factors. Please consult an expert before drawing conclusions or accepting manufacturer claims. A good independent reference is Mike Klemen's Test Site in North Dakota.

These charts shows the superior performance of the Lakota blade technology. (see also Blades technology below) With a smaller diameter, light weight and very stiff blade technology and much lighter system Lakota out performs higher rated competitors in medium to high wind conditions. That's because Lakota does not hide from the wind but maintains its full performance throughout its entire flight envelop. Competitor systems tend to turn off or turn away from the wind and reduce their output. Above 30mph LAKOTA continues to produce peak power in excess of 1500W and some users report up to 1800W at 100amps without damage to either electrical or mechanical components. Rain, snow, sleet or storms the Lakota SC turbine is made to take it all and continue to put out the power.

In addition, since the blades are very light they can take advantage of wind gusts that heavier blades can't because their inertia is too high to react before the gust is over. Over time this amounts to considerable extra energy extracted from the same column of air.

Is my site suitable for an Aeromax wind/solar energy system? - Small wind turbines can operate effectively in locations covering over 60% of the Earth's land surface area. With the Lakota's low startup/generation wind speed (6 mph), its phenominal efficiency and its quiet operation, there is a good chance that your area is suitable. Call us for we will assist you in determining the wind rating, wind speeds and potential wind energy at your site yo determine if they warrant a system. Installation sites can include homes, farms, ranches, villages, mines, and military, coastal, and telecom applications around the world.

Installations

This installation is in east central Idaho at 4500 foot altitude. Towers are 70 foot topped with the 24 VDC Lakota. These two turbines in a wind class 3/4 will produce 300+ kilowatt hours of power each month.