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Enroute Airbus A380 wake flips Challenger business jet upside down

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Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#11

> one thousand feet above Are the imperial units of measurement an aviation thing, or an American thing, or a bit of both?

Aviation thing (unfortunately, but it is what it is).

You'll hear them referred to as Flight Levels or Angels as well (Angel 15 == 15,000feet).

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#13

> one thousand feet above Are the imperial units of measurement an aviation thing, or an American thing, or a bit of both?

Mostly an aviation thing but descended from the fact that many early airplanes were American/British. IIRC only China, Russia and the DPRK use metric units.

EDIT: ahahaha <3 HN commenters

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#14
post #6
post #5

Earlier quoted context omitted.

Why does the landing weight effect the air it displaces?

Not displacement (volume), but pressure from velocity: lift. The amount of lift by definition has to equal the weight of the aircraft at 1G.

... and the force of that lift on the plane has an equal and opposite on the air. A Heavier plane disturbs the air more.

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#15
Big problem is the use of autopilot navigation locked to the GPS route.. this pretty much guarantees that you will fly right below the wake of the above plane on the same route! (Before GPS it will be very odd to flight exactly the same path) ..

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#16

Big problem is the use of autopilot navigation locked to the GPS route.. this pretty much guarantees that you will fly right below the wake of the above plane on the same route! (Before GPS it will be very odd to flight exactly the same path) ..

Few years ago, an embraer actually cut another's plane wing off for the exact same reason. (They were flying at the wrong altitude though)

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#17

Big problem is the use of autopilot navigation locked to the GPS route.. this pretty much guarantees that you will fly right below the wake of the above plane on the same route! (Before GPS it will be very odd to flight exactly the same path) ..

Few years ago, an embraer actually cut another's plane wing off for the exact same reason. (They were flying at the wrong altitude though)

That's Gol Transportes Aéreos Flight 1907 -- https://en.wikipedia.org/wiki/Gol_Transportes_A%C3%A9reos_Fl...

There's also an episode ("Phantom Strike") of the TV series Mayday about the incident; it's probably on youtube.

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#18

> one thousand feet above Are the imperial units of measurement an aviation thing, or an American thing, or a bit of both?

Aviation. 500 & 1000 ft intervals are very convenient discrete altitude levels for coordinating traffic, and that's probably a key reason why it's held up universally. In meters, the interval will either awkward and hard to communicate numbers or spaced too widely to be efficient.

Re: Enroute Airbus A380 wake flips Challenger business jet upside down

#19
post #2

The physics of this are insane. Then again, by my calculation the A380 displaces roughly 11 million cubic feet of air per second at the max landing weight.

Though note that a box around a cruising A380 at 827 feet per second * 79 feet tall * 262 feet wide is itself 17 million cubic feet.
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