Qatar 787 moves into A350 on ground during storm

[Puggit]

Quite astonishing video of an incident involving 2 grounded planes during a storm. A parked 787 turns and moves forward in to the wind and crashes in to a parked A350

https://twitter.com/AeronewsGlobal/status/12561019...

[Eric Mc]

Taking the Boeing V' Airbus fight too far.

[Mr Pointy]

Someone forgot to put the handbrake on?

[croyde]

Blimey

[Paul-427]

Why does it move into wind ? Some aerodynamic weirdness ??

[Puggit]

Paul-427 said:

Why does it move into wind ? Some aerodynamic weirdness ??

Well, that is what lifts a plane - creating a vacuum above the wing. Not sure how that moves it forward though. Pilots would know - I hope!

[Simpo Two]

It makes no sense. Unless the starboard wheelbrake suddenly failed.

[Krikkit]

Simpo Two said:

It makes no sense. Unless the starboard wheelbrake suddenly failed.

Massive body and tailplane perpendicular to the wind direction and a slick apron surface... Makes plenty of sense.

[Munter]

Krikkit said:

Simpo Two said:

It makes no sense. Unless the starboard wheelbrake suddenly failed.

Massive body and tailplane perpendicular to the wind direction and a slick apron surface... Makes plenty of sense.

That sort of thing.

Not much weight on the front wheel.

Wind hits tail, which acts as a rudder, plane spins around the "rear" wheels, then tail acts like a sail on a sailing dingy and "drives" the plane across the wind.

[Tony1963]

Puggit said:

Well, that is what lifts a plane - creating a vacuum above the wing. Not sure how that moves it forward though. Pilots would know - I hope!

Vacuum? Wow. And I thought it was just a drop in pressure.

[JuniorD]

This is why aircraft should ideally be parked pointed into the wind when big winds are expected!

I remember back in Jan 2005 Dublin airport took a very bad battering. The wind turned a parked A330 and the roof just above the cockpit collied with the underside of the wing of an other A330. A 757 was also rotated 90 degrees, a BAe146 was blown onto a taxiway and an ATR was almost toppled onto its wingtip.

[croyde]

Are we bringing back the conveyor belt question.

[Simpo Two]

croyde said:

Are we bringing back the conveyor belt question.

All I know is that if you put air into a Concorde air intake at Mach 2 and slow it down over 14 feet to 350mph... it makes the 'plane go faster. Go figure...

[5150]

See: 'Weathervane effect'

[Evanivitch]

Simpo Two said:

It makes no sense. Unless the starboard wheelbrake suddenly failed.

Plane was in storage mode, battery disconnected, brakes off. Didn't take a lot to shift it off the chocks...

[Tango13]

Simpo Two said:

All I know is that if you put air into a Concorde air intake at Mach 2 and slow it down over 14 feet to 350mph... it makes the 'plane go faster. Go figure...

No it doesn't. The air is stationary and the inlet is moving at Mach 2

As the air enters the inlet it is accelerated to almost the same relative speed as the engine and at the same time compressed to allow the inlet compressor to do its job, the limiting factor being temperature not pressure.

[Simpo Two]

Evanivitch said:

Simpo Two said:

It makes no sense. Unless the starboard wheelbrake suddenly failed.

Plane was in storage mode, battery disconnected, brakes off. Didn't take a lot to shift it off the chocks...

So a chock gave way - same idea. I couldn't see the chocks in the video.

Tango13 said:

Simpo Two said:

All I know is that if you put air into a Concorde air intake at Mach 2 and slow it down over 14 feet to 350mph... it makes the 'plane go faster. Go figure...

No it doesn't. The air is stationary and the inlet is moving at Mach 2

As the air enters the inlet it is accelerated to almost the same relative speed as the engine and at the same time compressed to allow the inlet compressor to do its job, the limiting factor being temperature not pressure.

Well that's what they said in a documentary about Concorde I saw two days ago. One of the reasons it could do Mach 2 without reheat apparently - 'supercruising' - the only a/c to do this.

[GliderRider]

As 5150 says, the fin causes the aeroplane to weathercock, and once it has started moving, its momentum is enough to keep it going into the A350 despite the fact that its now heading into wind.

[eccles]

Evanivitch said:

Simpo Two said:

It makes no sense. Unless the starboard wheelbrake suddenly failed.

Plane was in storage mode, battery disconnected, brakes off. Didn't take a lot to shift it off the chocks...

If you're leaving aircraft outside in adverse weather conditions you should chock every wheel. It didn't look to fully chocked in that video.