Coldest Temperatures: Electro Mechanical Expulsion Deicing Systems 12/13

Electro-mechanical Expulsion Deicing Systems (EMEDS) use a mechanical force to knock the ice off the flight surface. Typically, actuators are installed underneath the skin of the structure. The actuator is moved to induce a shock wave in the protected surface to dislodge the ice.

Battle: Daryl Daugherty clears the sidewalk in front of his home on Monday in Carmel, Indiana as temperatures dropped to 10 below zero after 12 inches of snow fell.

It was 5 degrees at kickoff on Sunday inside sold-out Lambeau Field for a playoff game between the Green Bay Packers and the San Francisco 49ers, one of the coldest ever played.
In the parking lot, Craig and Renee Heling of Waukesha, Wisconsin, set up a camouflage hunting blind behind his white pickup truck and tailgated next to a propane heater. He wore four layers of clothing up top, two on his legs: ‘Two wool socks on – right now, I feel comfortable,’ he said.

‘Well, my nose is about frozen. It feels like – I jumped in the lake the other day – it feels about like that,’ his wife said with a laugh. She was completely dry, unlike New Year’s Day when she took part in a ‘polar plunge’ into Lake Michigan.

Indianapolis Mayor Greg Ballard upgraded the city’s travel emergency level to ‘red,’ making it illegal for anyone to drive except for emergencies or seeking shelter. The last time the city issued such a travel warning was during the 1978 blizzard.

For several Midwestern states, the bitter cold was adding to problems caused by a weekend snow storm. The National Weather Service said the snowfall at Chicago’s O’Hare International Airport totaled more than 11 inches as of 6 p.m. Sunday – the most since the Feb. 2, 2011, storm that shut down the city’s famed Lake Shore Drive.