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Are Women Doomed on the Street?
Are Women Doomed on the Street? Imagine a tennis player judging the power and accuracy of her serve solely by its form. Visualize a volleyball player sharpening her "spiking" skill by hitting only air. Also finally, picture a pole-vaulter competing...
Are You Living On An Island Of Fear?
In the movie released last year, "The Castaway," Tom Hanks played the role of a FedEx delivery man. His job was to fly all over the world making sure that the packages were delivered on time.
One fateful trip found his cargo plane flying through...
Discover the Secrets of Citrus Fruits and Healthy Eating
Citrus fruits have long been known to have many health benefits. In the days of the first ocean crossings, sailors often became sick with scurvy due to vitamin C deficiencies caused by a lack of citrus fruits. Even though vitamin C deficiency is no...
Essential Factors in Women’s Self Defense
Criminals are more intelligent than we give them credit for when it comes to their choice of victims. They do not typically choose a victim at random, but rather when they see a good opportunity available to them. It’s the same scenario as the low...
Great Reasons To Start Boating This Spring!
(NC)-Thinking about pursuing a new, exciting family activity this year? Consider boating - it has so much to offer.
Boating, in its various forms, is a recreational activity for the entire family.
Recreational boats are used...
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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
About the Author
Andre is a regular contributor to the RC Airplane Advisor:
www.rc-airplane-advisor.com
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