Paul Revere by Cyrus Dallin, North End, Boston
Tuesday, June 20, 2017
Too Hot For Planes To Fly?
People who don't believe climate change/global warming is real, skip this and go visit a blog that claims Trump is a competent and gracious man and that he is very much beloved by the American people as well as admired by people all over the world.
Phoenix flights cancelled because it's too hot for planes
As temperatures climb in Phoenix, Arizona, more than 40 flights have been cancelled - because it is too hot for the planes to fly. The weather forecast for the US city suggests temperatures could reach 120F (49C) on Tuesday. That is higher than the operating temperature of some planes.
American Airlines announced it was cancelling dozens of flights scheduled to take off from Sky Harbor airport during the hottest part of the day. The local Fox News affiliate in Phoenix said the cancellations mostly affected regional flights on the smaller Bombardier CRJ airliners, which have a maximum operating temperature of about 118F (48C).
The all-time record for temperatures in Phoenix is just slightly higher, at 122F, which hit on 26 June 1990. The cancelled flights were scheduled to take off between 15:00 and 18:00 local time.
Why can't planes fly?
At higher temperatures, air has a lower density - it is thinner. That lower air density reduces how much lift is generated on an aircraft's wings - a core principle in aeronautics. That, in turn, means the aircraft's engines need to generate more thrust to get airborne.
The NEOTUS*, Trump, on climate change/global warming:
*NEOTUS = National Embarrassment of the U.S.
"The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive."
"NBC News just called it the great freeze - coldest weather in years. Is our country still spending money on the GLOBAL WARMING HOAX?"
"Snowing in Texas and Louisiana, record setting freezing temperatures throughout the country and beyond. Global warming is an expensive hoax!" "Ice storm rolls from Texas to Tennessee - I'm in Los Angeles and it's freezing. Global warming is a total, and very expensive, hoax!"
"Obama's talking about all of this with the global warming and...a lot of it's a hoax. It's a hoax. I mean, it's a money-making industry, OK? It's a hoax, a lot of it."