FlywheelsLoad-leveling and

Transportation

What is a Flywheel?

• Rotating device which can collect or expend energy.

Flywheel Physics

• E = ½ Iω2

• I = kMr 2

• a

Engineering Problems

• High Rotational Speed• Tensile strength of materials• Energy Loss

• http://www.youtube.com/watch?v=L2pz1PkhAo8

Technologies

• Steel to composite• Magnetic bearings• Construction methods

Ragone plot

Uses

• Common Applications• NASA• Transportation• Load-Leveling

Flywheels in Daily Life

• Potter’s wheel• Clocks• Treadle in sewing machine

Flywheels in NASA

• Potentially power space shuttles

Flywheels in Transportation

• Electric rails• HEVs• Chrysler Patriot

Flywheels as Load Levelers

• Beacon Power Corporation• UPS

Summary

References• http://www.nasa.gov/missions/science/f_flywheel.html• http://www.mpoweruk.com/alternatives.htm• http://www.upei.ca/~physics/p261/projects/flywheel2/Whatis.html• http://en.wikipedia.org/wiki/

Flywheel#Flywheel_in_the_internal_combustion_engine• http://www.pentadyne.com/• http://www.narucmeetings.org/Presentations/Beacon%20Power

%20NARUC%20presentation%2020090216%20%5BFinal%5D.pdf• http://www.discoversolarenergy.com/storage/flywheels.htm• http://www.vyconenergy.com/• http://www.flywheelenergystorage.com/