Electric PPG Description
A paramotor is the propulsive portion of a powered paraglider. Paragliders are highly efficient parachutes designed primarily for soaring. Through the years, their improving efficiency allowed pilots to run into the air propelled only by what motor they could "wear." In flight, it turns into a seat.
The vast majority of motors are lightweight but inefficient 2-strokes. These are amazing engines in their own right, able to put out enormous power for their weight, but are dogged by noise, pollution, shipping hassles and less-than-stellar reliability. The four-stroke motor is an improvement in most of these but is still a trade-off.
Enter the Electric Paramotor. Csaba Lemak created the first practical version and flew it numerous times from his home in Canada on about June 6, 2006. he also flew it during the worlds largest airshow at Oshkosh, Wisconsin on July 29, 2006. He continues to work on improvements but his prototype is incredibly promising.
What's a watt?
The watt (W) is a measure of power. Power is the ability to produce force at some speed or RPM. Although the more familiar unit of power used for engines is horsepower (hp), electric motors measure their power in watts.
Don't confuse torque with power. Torque is a force, like how much pressure you must exert to get a screw out. Power is twisting against some torque through some number of revolutions per minute.
746 watts is the same as one hp. Some interesting comparisons of watts:
• A human being climbing a flight of stairs is doing work at the rate of about 200 watts.
• A trained athlete can work at up to 900 watts for short periods.
• A car engine produces work at a rate of around 100,000 watts.
An incandescent lightbulb
Copyright © 2015 Jeff Goin | All Rights Reserved