1 For example, flywheels are used in reciprocating engines because the energy source, torque from the engine, is intermittent. 2  Delivering energy at rates beyond the ability of a continuous energy source.
CongresswomanTammy Duckworth is a new mom. She gave birth to a baby girl named Abigail Tuesday. It is the first child for the 46-year-old Duckworth and her husband Bryan. Because of her age and injuries as an Iraq War veteran, Duckworth's pregnancy was considered high-risk. Go Search
Tammy Duckworth Donate. Tammy Duckworth is a retired member of the Army National Guard. Use of her military rank, job titles, and photographs in uniform does not imply endorsement by the Department of the Army or the Department of Defense. Paid for and authorized by Tammy for Illinois.