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Belize
This article briefly summerizes beauty of Belize
Belize doesn't cover much landmass, but when it comes to water, this country is a veritable aquatic superpower. Because of its small size, visitors can cover a lot of ground in a short period of...
Juggling Your Way Into Balance
Let's take a brief look at the journey of American women through the last 100 years. Throughout this period, we have proved ourselves to be resilient and flexible, persistent and determined, dedicated, diverse, courageous, and perennially...
The Art Of Balancing An Unequal Life
Study the best seller lists of the past few years and you'll notice titles that range from Peter Lynch's "Beating the Street" to Thomas Moore's "Care of the Soul: How to Find Depth and Sacredness in Everyday Life." This juxtaposition captures the...
Water Damage In A Rental Unit
Biting her keys in her mouth, Phyllis jiggled the condo door open with her free fingertip. Peeking over bags of groceries, she stumbled through the living room and into the kitchen. Step. Step. Step. Squish......? Setting the groceries down, her...
Yacht Chartering in Greece - A Few Things to Consider
When to Go
The sailing season in Greece lasts from March to early November. During the Spring months, the weather during the day varies from cool to warm and is usually cool at night. The sea temperature is not usually suitable for swimming...
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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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