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British Airways 747 sets subsonic record for New York-London flight
Posted on 2/9/20 at 10:58 pm
Posted on 2/9/20 at 10:58 pm
A jet stream with winds greater than 200 MPH allowed it to happen.
LINK
quote:
A British Airways flight this weekend set a new subsonic record for the fastest New York to London trip while riding through a strong North Atlantic jet stream.
Maximum winds in the jet stream have been more than 200 mph over the North Atlantic this weekend. The jet stream is a narrow ribbon of strong winds about 30,000 feet high in the atmosphere. Since most commercial planes fly at jet stream level, a 200-plus-mph tailwind can shave off flight time from the United States to Europe.
quote:
Some commercial planes had a ground speed over 800 mph as they zoomed over the North Atlantic this weekend. For reference, the average ground speed of a jet airliner at cruising altitude (around 30,000 feet) ranges from 590 to 650 mph.
A Boeing 747-400 operated by British Airways from New York to London was one of the aircraft to have a ground speed over 800 mph for a part of its flight. The speed boost allowed British Airways flight 112 to complete its trip in four hours and 56 minutes. That's more than an hour shorter than its average flight time of six hours and 13 minutes, according to flightradar24.com
It also set a record for the quickest subsonic flight from New York to London. The previous record was five hours and 13 minutes.
LINK
This post was edited on 2/9/20 at 11:02 pm
12
Posted on 2/9/20 at 10:59 pm to RollTide1987
New York to London.
Your title suggests the opposite direction.
Anyone who has 00:06:25 to kill should watch this about this exact topic Youtube (Wendover Productions)
Your title suggests the opposite direction.
Anyone who has 00:06:25 to kill should watch this about this exact topic Youtube (Wendover Productions)
This post was edited on 2/9/20 at 11:02 pm
Posted on 2/9/20 at 10:59 pm to RollTide1987
Cool
Posted on 2/9/20 at 11:00 pm to baybeefeetz
Global warming, win?
Posted on 2/9/20 at 11:02 pm to RollTide1987
Why is ground speed not the same as air speed?
Posted on 2/9/20 at 11:03 pm to RollTide1987
If the speed of sound is around 760mph, how was this flight considered sub-sonic? Does it have something to do with the speed at altitude is less than ground speed?
Posted on 2/9/20 at 11:04 pm to OysterPoBoy
Posted on 2/9/20 at 11:11 pm to OysterPoBoy
Ground speed is your speed in relation to the ground. Air speed is your speed in relation to the air around you. So when they were doing 850 mph relative to ground speed they were only doing 650 mph air speed.
This post was edited on 2/9/20 at 11:14 pm
Posted on 2/9/20 at 11:12 pm to RollTide1987
Very cool. A Virgin Atlantic plane came in one minute slower.
Give that BA 747 the Blue Ribband. And RIP to the Concorde.
Give that BA 747 the Blue Ribband. And RIP to the Concorde.
Posted on 2/9/20 at 11:14 pm to RollTide1987
Posted on 2/9/20 at 11:17 pm to LSU Fan SLU Grad
Flight thru the air mass itself is subsonic but since they are moving WITH the airmass already moving 200 MPH they have a ground speed of over 800 MPH.
Posted on 2/9/20 at 11:24 pm to LSU Fan SLU Grad
They were in a current. Think of it like me tossing a ball in a car traveling 100mph. I don't have a 100mph fastball but the ball was traveling that fast through space and time. The earth is rotating at 1000 mph and the earth is moving at 67000 mph around the sun and the solar system is moving at 450,000 mph through the galaxy so basically. It's aliens
Posted on 2/9/20 at 11:33 pm to OysterPoBoy
quote:
Why is ground speed not the same as air speed?
Head winds, tail winds, and other factors.
Edit: Believe it or not, the 747 is the fastest commercial jet.
This post was edited on 2/9/20 at 11:35 pm
Posted on 2/10/20 at 4:16 am to RollTide1987
quote:
That's more than an hour shorter than its average flight time of six hours and 13 minutes, according to flightradar24.com
I bet they still had to sit on the tarmac for an hour to wait for a gate to become available...
Posted on 2/10/20 at 5:22 am to UncleLester
On the return tip London to NY , the ground speed would have been about 450 mph ,
Posted on 2/10/20 at 5:35 am to OysterPoBoy
quote:
Why is ground speed not the same as air speed?
Ho. Lee. shite.
Posted on 2/10/20 at 5:55 am to Pitt Road
quote:
Edit: Believe it or not, the 747 is the fastest commercial jet
And is a 50+ year old airframe.
Posted on 2/10/20 at 6:02 am to bigwheel
quote:
On the return tip London to NY , the ground speed would have been about 450 mph
The pilots would not have flown directly against the jet stream. They would have gone north or south of it to mitigate its effects on a westbound flight.
Posted on 2/10/20 at 6:07 am to LSU Fan SLU Grad
quote:
If the speed of sound is around 760mph, how was this flight considered sub-sonic? Does it have something to do with the speed at altitude is less than ground speed?
They didn’t go supersonic due to the fact they were flying in a 200 mph tailwind. Sort of like the moving walkways in airports. "Mind the gap".
This post was edited on 2/10/20 at 8:08 am
Posted on 2/10/20 at 6:07 am to RedFoxx
quote:of course it did. Damn virgins
A Virgin Atlantic plane came in one minute slower.
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