J4CKO

iTrader: (1)

Last Sunday we were at the inlaws, sat outside, they live quite near the flightpath for Manchester airport and the planes were taking off in their direction, each time a plane went past, probably still sub 1000 ft and half a mile away, afterwards we got a breeze for a little while that soon stopped, it did seem to coincide with the planes passing but it was my wife who remarked on it, her brother disimssed this as being stupid and normally I would but it did seem like the planes were causing the breeze, he keeps mentioning it and goading her about her silliness so I would like to proove or disproove the theory !


I know planes create hell of a hole in the air at low levels due to the relative thickness of air at ground level and also create wake vortices, hence the need for separation after any plane but particularly big ones like the 747/380, sometimes when they go over, for a while after you can hear the air swirling above you, but can it cause a breeze half a mile or so away, I am not sure, I didnt think so but it was pretty predictable on an otherwise still day.

Would love to proove him wrong as he is a bit of a argumentative person, so even if this doesnt happen can someone make somethign plausible up and create a website we can point him at

FlightMan

Half a mile away? Depends on the topography of the location I'd say. Over an open empty field I'd day it possible, in a built up area, or wooded area, doubtful.

Kieran_Burns

iTrader: (1)

Oh... I dunno.

I got a fair breeze from this one



mind you, I was only a couple of hundred foot away 8)

I'm right below the flight path for East Midlands Airport and have to say I've never noticed a breeze myself, but the wind is usually up all the time anyway....

Dedrater

Well, according to chaos theory and such the butterfly effect, it most definitely can.

ALi-B

iTrader: (1)

Wake turbulance? (A vortex left in the wake of a plane; the larger/older the plane the bigger it usally is)

I know you feel the down draft of 747s from quite a long distance away; noticed in remote private carpark at Heathrow which was about half a mile away as the crow flies. Smaller planes flew over and I felt nothing, then a few 747s came over (landing) there was a puase, then followed by a gust of wind.

Pink_Floyd

Ah the whine of the '199

SwissTony

iTrader: (19)

IT is not wake turbulence as everyone knows !!


It is in fact the collective farting and ring release from nervous flyers upon takeoff and a combination of hot air from the inflight announcements and initial use of the toilets and flushing systems

Fact

Coffin Dodger

Having witnessed an A380 take off at fairly close quarters (Farnborough Airshow) I can comment that they do shift a lot of air, whether you'd feel that from half a mile away I'm not sure.

FlightMan

I've been less than 1/2 mile from the A380 as it rotates several times and not felt anything.

BlkKnight

A friend of mine sails in Datchett reservoir.

He notices it a fair bit - especially on still days. It's not unheard of for boats to be toppled by these gusts

tony de wonderful

The wake turbulance will drift down-wind. I know the turbulence can last for some time.

If it lasts for 2 mins then it would travel 480 m at 4 m/s windspeed (in your direction).

ALi-B

iTrader: (1)

IIRC did I read somewhere that the A380 produces less wake vortex than a old 747 (300 ) without the winglets/wingtips?

Dedrater

Wouldn't it be easier just to gently lean over and in a nonchalant manner whisper in his ear, I banged your sister last night or smell my fingers, that your sister

CREWJ

J4CKO

iTrader: (1)

Probably innapropriate at a family gathering