Electric RC Airplanes
In the recent past, almost all rc airplanes were powered by small internal combustion engines, using liquid fuels. Models powered by electric motors were few and far between. The electric rc airplane is now becoming much more common, especially in models designed for beginning pilots. Electric power advantages include reliability, convenience, low noise, low vibration, and lack of fuel residue (clean). ?The disadvantage of early systems was low power.
However recent electric airplane motors, combined with advanced batteries, have increased the performance of electric rc airplanes dramatically. ?In the more common Brushed motors, current switching is done using sliding contacts known as brushes. The contacts get hot and wear out over time. In Brushless motors, the switching happens electronically using a special voltage regulator (speed controller). This second type of motor and its controller are more expensive to make.
Its advantages are no maintenance and higher performance.There are three main types of batteries in use for electric airplane motors.? These are Nickel Cadmium (NiCad), Nickel Metal Hydride (NiMH) and Lithium Polymer (LiPo). LiPo batteries are lighter for a given application, but tend to be more expensive than NiCad or NiMH.? ?Electric rc airplane types include powered sailplanes, scale models, aerobatic models, and ducted fan (jet-type). Virtually any type of rc model can now be electric powered. Even powerful electric helicopters are now a reality. In addition, some new types of rc models have emerged that were not practical before, e.g.
parkflyers and indoor flyers. For the beginner, something slow and stable is recommended for a trainer aircraft. Visit the RC Airplane Advisor for more info about Electric RC Airplanes.This article may be reprinted if proper credit is given and all links left intact.Copyright?2005 RC Airplane Advisor?.
Andre is a regular contributor to the RC Airplane Advisor:www.rc-airplane-advisor.comPower Technology to Meet with Taiwan Companies to Discuss Joint Renewable Energy Project
HOUSTON, TEXAS (ContentDesk) November 5, 2005 -- Power Technology Inc. (OTCBB: PWTC) CEO Bernard J. Walter announced today that following a recent positive evaluation of the Companys proprietary battery technology, Power Technology has been invited to Taiwan to explore a joint venture to manufacture and sell Power Technology batteries.
Mr. Walter stated These meetings have been arranged for next week in Taiwan only after the Companys technology was positively evaluated.
We are looking forward to exploring a joint project to bring this important technology to the market. About Power Technology: Power Technology, Inc. is a Research and Development Company engaged in activities regarding alternative battery technology using patented, ultra light materials with up to 50% less weight and significantly less lead content than conventional batteries. The Company is in the early stages of commercializing its battery technology, and has designed equipment and systems to manufacture...
Power Technology to Meet with Taiwan Companies to Discuss Joint Renewable Energy Project
Batteries > Power Technology to Meet with Taiwan Companies to Discuss Joint Renewable Energy Project
Automotive Care: Alternators, Batteries, And Fuses
Your car's electrical system runs because of several essential components including: a battery, fuses, and an alternator. When any one of these components fail, your car won't run or it will perform poorly. Unfortunately, it isn't always apparent which part is giving you the trouble. We'll examine each component, discuss its unique characteristics, and outline simple maintenance options to help you make the proper diagnosis.1. Alternators. Car alternator problems are usually noticed when you realize the juice to your headlights has been reduced.
No longer can you see hundreds of feet in front of you, instead the light barely makes it past the front bumper. Check the wires leading to the alternator and make sure that they are secure and free of corrosion. Examine your alternator belt for cracks as well as for tension. If your headlights are still dim, then it is likely your alternator will have to be replaced....
Automotive Care: Alternators, Batteries, And Fuses
Batteries > Automotive Care: Alternators, Batteries, And Fuses
Sakura First to Launch Lithium Powered Electric Bike
London based Sakura Battery Company, are to launch Europe's first production lightweight electric bike in spring 2005, powered by the company's latest development Advanced Lithium Battery System (ALBS), coupled with an aluminium frame the bike is expected to weigh in at around 23 kilos, a massive 17 kilos lighter than current lead acid powered electric bikes.Sakura Director Dan Hornby said "Whilst the sale of electric bikes has been growing rapidly over last few years, sales have been held back by the sheer weight of the batteries needed to get an acceptable range, we
have been working to solve this problem for more 2 years. The Lithium battery technology was fairly easy; most laptops use similar batteries, the battery management system and the electronic controller were the difficult parts to crack. Unlike the normal lead acid battery pack in a standard electric bike, which contains two or three 12 volt batteries, the ALBS system has between seven and ten 3.7 volt batteries.
Batteries > Sakura First to Launch Lithium Powered Electric Bike
Smelling the roses and recharging our batteries!
This holiday season marks my 3-year anniversary in theInternet Marketing business. Of course, on suchanniversaries we all ask ourselves: Am I better off now thenwhen I started? My enthusiastic answer is: By far :-) Thatautomatically raises another anniversary question: Am Iwhere I want to be? My answer, thoughtful but stillenthusiastic, is: Not quite ;-)Sound familiar? Or maybe you haven't gotten to the "betteroff" part yet. Regardless of how you answer these twointrospective questions, my piece of advice to you thisholiday season is the same: Take some time off. Relax,enjoy your family, regroup your thoughts and goals anddecide what is really important to you, your personal life,and the lives of those most important to you.This piece of advice, like most advice I give, comes frompersonal experience. I have been running around like crazyfor the past three years growing this Internet business.Granted, it has paid off well, in many visible ways, but atwhat personal price?My children miss...
Smelling the roses and recharging our batteries!
Batteries > Smelling the roses and recharging our batteries!
potty training Batteries Electric RC Airplanes
When to wash your fruit
Washing your fruit is recommended for many reasons. Dirt or bugs may be on the outside or in commercially produced fruit pesticide residue may be present. There are times when you should wait until immediately before you serve the fruit to wash.Cherries, both Bing and Rainier, blackberries, raspberries both red and black, cranberries, strawberries, blueberries and huckleberries should all be stored in a clean container in the refrigerator until you are ready to use them. When you are ready to...
fruit Batteries Electric RC Airplanes
Batteries > When to wash your fruit
Does a Mediterranean Diet Combined with an Asian Diet Equal the World's Healthiest Diet?
Most of us are aware that a traditional Mediterranean diet is very healthy. It's also common knowledge that a traditional Asian diet is very good for your health. So what would happen if you combined both these diets into one?That's exactly what a couple living in Australia have done. For over 12 years graphic designer Ric Watson and travel manager Trudy Thelander have been following what they call a "MediterrAsian diet" -- literally meaning a fusion of Mediterranean and Asian diets.Combining...
diets Does a Mediterranean Diet Combined with an Asian Diet Equal the World's Healthiest Diet?
Batteries > Does a Mediterranean Diet Combined with an Asian Diet Equal the World's Healthiest Diet?