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A Refreshing Approach To A Family New Year
With a new year, we say goodbye to the past and hello to the future. What can we do in the present moment to bring closure to last year and hope for what lies ahead? For families, it can be a time to celebrate and learn from the previous year. It is...
Putting Spirit First: Goals For Your Soul
"But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you." Matt. 6:33
If you've ever set very many goals, you've probably had at least one goal that you just can't seem to reach. You
can't seem...
Semper Fidelis
The air was crisp that bright autumn day, not unlike the uniforms of the hundreds of Marines who had gathered to mark the passage of a sacred occasion. A sea of faces filled the outdoor stadium under the blue Carolina sky as Marines and their...
Simple Things for the “Sailing Life”
Owning a boat has an oxymoronic quality to it. “The simple life” can be pretty complex--I think of it as having a plane, a car, and a house compressed into a very small space. This specialized environment calls for specialized equipment and...
The Reality Of The Date Rape Drug
Could you become a Victim of the Date Rape Drug?
Each month, more than ten women of all ages and backgrounds contact our Adoption Center with the same experience -- they have been victims of a date rape drug and are now pregnant. Most of the...
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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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