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Started By
Message
re: British Airways 747 sets subsonic record for New York-London flight
Posted on 2/10/20 at 6:18 am to castorinho
Posted on 2/10/20 at 6:18 am to castorinho
Not a hell of difference between northern route and southern route, only a couple of hundred miles, but narrows closer to destination
0
Posted on 2/10/20 at 6:19 am to OysterPoBoy
quote:
Why is ground speed not the same as air speed?
We arent on a flat plane
Posted on 2/10/20 at 6:46 am to castorinho
Underrated post, 
For those having troubles conceiving this concept, watch “Finding Nemo” and report back.
For those having troubles conceiving this concept, watch “Finding Nemo” and report back.
Posted on 2/10/20 at 6:54 am to yatesdog38
And how fast is the galaxy traveling through the universe 
Posted on 2/10/20 at 7:21 am to RollTide1987
So just how much speed can the body of a commercial jet be exposed to before damage occurs?
Posted on 2/10/20 at 7:21 am to BestBanker
quote:
So just how much speed can the body of a commercial jet be exposed to before damage occurs?
Airspeed prob 700ish
Posted on 2/10/20 at 7:26 am to BestBanker
I would assume what ever air speed the aircraft is rated for you wouldn't want to exceed that. Key word there is air speed as this flight was operating within it's designed air speed
Posted on 2/10/20 at 7:29 am to crazyLSUstudent
Thanks guys. Just one of those thoughts that had me concerned for passenger safety.
Posted on 2/10/20 at 7:39 am to PipelineBaw
quote:
We arent on a flat plane
so you say...
Posted on 2/10/20 at 8:02 am to RollTide1987
I've read about sub-orbital, atmosphere skimming passenger aircraft for the better part of my life. Will we ever see that concept brought to the real world?
Posted on 2/10/20 at 8:09 am to crazyLSUstudent
quote:
I would assume what ever air speed the aircraft is rated for you wouldn't want to exceed that. Key word there is air speed as this flight was operating within it's designed air speed
the aircraft was operating at normal speed, it just had a 200+ knot tailwind, not uncommon to see over the North Atlantic in the winter time
Posted on 2/10/20 at 8:36 am to Tigeralum2008
quote:
I've read about sub-orbital, atmosphere skimming passenger aircraft for the better part of my life. Will we ever see that concept brought to the real world?
I doubt it due to cost effectiveness. A plane that skirts the atmosphere or goes sub-orbital would be significantly smaller in size to the ones we have now. Smaller planes mean fewer passengers which means less money.
Posted on 2/10/20 at 8:40 am to RollTide1987
quote:
Smaller planes mean fewer passengers which means less money.
the Concorde was a tiny airplane(as far as pax seats,) I don't think it ever made a nickel of profit
Posted on 2/10/20 at 9:45 am to RollTide1987
You almost never go into LHR without holding so someone pulled some strings.
The 747 is a fantastic airplane to fly and it could haul arse! You rarely were flight planned to go as fast as it could fly due to the increase in fuel burn but if you needed to let her rip she would do it without complaints.
The 747 is a fantastic airplane to fly and it could haul arse! You rarely were flight planned to go as fast as it could fly due to the increase in fuel burn but if you needed to let her rip she would do it without complaints.
This post was edited on 2/10/20 at 9:48 am
Posted on 2/10/20 at 9:48 am to JudgeHolden
quote:
quote:
Why is ground speed not the same as air speed?
Ho. Lee. shite.
He's asking a question
On a board of people stupidly giving uninformed takes 24/7, I respect someone who doesn't understand and asks someone to explain it to him.
Posted on 2/10/20 at 9:50 am to Pitt Road
quote:
Edit: Believe it or not, the 747 is the fastest commercial jet.
Yup, just beats out the 787 and A350.
Posted on 2/10/20 at 10:10 am to RollTide1987
How fast can a normal airliner like the 747 can go before the structural integrity of the plane is at great risk of being compromised?
This 747 was going 800 MPH across the Atlantic and that is hauling arse like a bat out of hell for an airliner. If you ask me, that's pushing it.
This 747 was going 800 MPH across the Atlantic and that is hauling arse like a bat out of hell for an airliner. If you ask me, that's pushing it.
Posted on 2/10/20 at 11:21 am to Pitt Road
quote:
the 747 is the fastest commercial jet
MMO is 0.92 (percentage of the speed of sound at a particular altitude and temperature)
The only faster civil jets today are the Cessna Citation X+ at 0.935 and Gulfstream G650/G700 at 0.925.
Needless to say, you won't be on any 747 flights at 0.92 as it's way too uneconomical to fly that close to the speed of sound. Most airline flights are in the 0.78 to 0.88 range.
This post was edited on 2/10/20 at 11:30 am
Posted on 2/10/20 at 11:56 am to just1dawg
this is great, but how long did they have to wait on the tarmac for an open gate????
has happened to me more than once at Heathrow!!!!
has happened to me more than once at Heathrow!!!!
Posted on 2/10/20 at 12:01 pm to Sentrius
quote:
This 747 was going 800 MPH across the Atlantic and that is hauling arse like a bat out of hell for an airliner. If you ask me, that's pushing it.
Why do people not understand air speed and ground speed are not the same thing?
800 mph with a 200 mph tailwind is the same as 600mph in dead air.
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