Mcluvin wrote:...and there's no convincing him otherwise.
ryan78 wrote:Coriolis Force. Prevailing winds in the Northern Hemisphere tend to deflect West to East and in the Southern Hemisphere deflect East to West. The closer to the equator you go the less affect of the winds. Now obviously there are things like Jetstreams that come and go, and are especially strong in the winter time when the troposphere is a lot lower, but generally that is the direction of the winds aloft. That's why TATL is always quicker going Eastbound then Westbound. I would assume same goes for Hawaii-Mainland.
I flew YYZ-HEL-YYZ last year on Finnair, the Eastbound leg was 7H10M flying time, Westbound was 9H05m, strong East-flowing jetstreams really slowed us down. It's also the same reason you see the Northeast US and Canadian Maritimes get hammered with huge winter storms. Weather builds over the Rockies and Coriolis Force pushes it East where it builds over the plains and then dumps 3 feet of snow on the Northeast.
Starlionblue wrote:For the more geeky among you, which side do the wind strength indicators on the barb face? Yes there is a rule for this.
SAAFNAV wrote:Starlionblue wrote:For the more geeky among you, which side do the wind strength indicators on the barb face? Yes there is a rule for this.
On the side towards to the low pressure system.
strfyr51 wrote:The "Prevailing Westerlies" flow West to east, You're flying in to the wind going west and you have a tail wind flying east. And??
The tailwind could be quite stiff.
at United we had a B777 land at SFO sometime back with nearly 90K fuel on board as they had 128 kts of tail wind across the Pacific and the Capt. had to explain why he didn't heed the weather and winds aloft to go with the reduced fuel load as he had to re-clear his flight plan over anchorage anyway.
We had to defuel the airplane for it to be weighed and had to burn the 13,000 gallons of fuel in our turbine shop engine test cells as we couldn't use it on another airplane. That defuel took us half the night! from 4PM-2AM. I really doubt the Capt. got more than chewed out.
I might have doubted a 128 knot tail wind myself.
I flew P3C's in the Pacific and saw 60-80 kt tailwinds and headwinds. but never 128 kts.
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