Heathrow airport landing live

[Jimbeam3678]

Crikey..... supersonic!

Not sure on the physics but it wasn’t supersonic something to do with airspeed as opposed to ground speed

 

[andy_mk3]

Not sure on the physics but it wasn’t supersonic something to do with airspeed as opposed to ground speed

Correct, airspeed was subsonic, ground speed was supersonic.

 

[2004typer]

Not sure on the physics but it wasn’t supersonic something to do with airspeed as opposed to ground speed

Need somebody to explain to my simple brain.

 

[Jimbeam3678]

Correct, airspeed was subsonic, ground speed was supersonic.

Explainable in basic terms or is in depth?

 

[Greg0986]

Basically, as the plane was technically travelling faster than the speed of sound, it would not have broken the sound barrier as it was helped along by the jet stream, which was moving about 250-260mph.

 

[2004typer]

Basically, as the plane was technically travelling faster than the speed of sound, it would not have broken the sound barrier as it was helped along by the jet stream, which was moving about 250-260mph.

So....is the speed relative to the speed of the air assistance - would a plane have to be doing 700mph more than the air that is being assisted by?

 

[andy_mk3]

Explainable in basic terms or is in depth?

Say you're flying at 500MPH with zero wind, your air speed would be 500MPH as that's the speed of the air coming past you. Now add a 200MPH tail wind, that's pushing you along to fly at 700MPH at ground speed, but the air coming past you is still 500MPH.

 

[Greg0986]

So....is the speed relative to the speed of the air assistance - would a plane have to be doing 700mph more than the air that is being assisted by?

Yes, to break the sound barrier it'll have to be doing 767mph+ without any wind assistance.

 

[sgavan]

4hours that a380 wow that must be scary on board

 

[wedrum]

800mph how would they know the plane could survive such speeds

 

[2004typer]

Yes, to break the sound barrier it'll have to be doing 767mph+ without any wind assistance.

So would it have the counter effect in reverse, in that say for example if the wind had an effect of 200mph against, a plane would need to be doing 900mph ground speed.

 

[VaderDSL]

800mph how would they know the plane could survive such speeds

It's ground speed, wind speed and plane speed cumulative. Like walking along a travelator in an airport, you're still only walking at say 3 MPH but if the travelator is also moving at 3MPH, your ground speed is 6MPH.

 

[2004typer]

Obligatory plane on a treadmill post.

 

[Stolly]

As a frequent transatlantic flyer i'd still prefer the scheduled flight time. You can't get any decent sleep on a 4 hour 56 min flight once all the meals and such are taken into account.

 

[Lord-Jaffa]

Some crazy landings in that video, does anyone have a timestamp for the touch and go incident?

 

[Jimbeam3678]

As a frequent transatlantic flyer i'd still prefer the scheduled flight time. You can't get any decent sleep on a 4 hour 56 min flight once all the meals and such are taken into account.

Spot the business class flyer

 

[Jimbeam3678]

Some crazy landings in that video, does anyone have a timestamp for the touch and go incident?

It was his first one ever captured so I’m sure it will be on his channel as some point.

 

[Stolly]

Spot the business class flyer

 

[robfosters]

Definitely new pants time if I was on any of those planes.

 

[Pigeon_Killer]

Some crazy landings in that video, does anyone have a timestamp for the touch and go incident?

5:05

 

[2004typer]

Lightning now in Manchester.

Edit...and Hailstone!