"So, believe it or not, the cold air that we get down here actually tends to help the performance of the helicopter. DAN: The low pressure systems we have here, particularly in this, weather we've been having, tends to create the opposite effect by decreasing the pressure. Low pressure systems, thinner air. DAN: And that cooler air makes the pressure higher again."
"Okay. We are in the helicopter hangar of the Araron. ((To answer a question from Camille.)) Camille asks. I'm curious about the impact of the subzero air temps and their impact on the flying conditions for the helicopters. RAY: Camille, we have someone who could help answer that. This is Dan Adams, one of our helicopter pilots. So, Dan, what's the impact of the cold?"
Cold Antarctic air tends to improve helicopter performance by increasing air density and boosting rotor effectiveness. Low-pressure systems reduce air pressure and create thinner air that can decrease performance, creating an opposite effect. Cooler air in some conditions raises pressure again, moderating those effects. Pilots operate helicopters from the Araron's hangar and identify air temperatures around minus five degrees Celsius a few thousand feet above the surface. Antarctic sounds and the instruments used to test waters under the Thwaites Glacier are also subjects of inquiry during operations.
Read at www.nytimes.com
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