RC India

General Topics => Chatter Zone => Topic started by: anwar on May 21, 2011, 04:57:03 PM



Title: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: anwar on May 21, 2011, 04:57:03 PM

http://www.youtube.com/watch?v=3k-xG8XX1EM


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: prateek13 on May 21, 2011, 05:34:36 PM
cool!


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: SunLikeStar on May 21, 2011, 05:40:13 PM
except one at 1:36 all planes went vertical :o
 ;D


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: rajathv8 on May 21, 2011, 06:45:50 PM
Nice find :)


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: rohitgupta322 on May 21, 2011, 07:18:06 PM
except one at 1:36 all planes went vertical :o
 ;D

There is another at 2.23 that didn't go vertically up.  ;D


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: rcpilotacro on May 21, 2011, 08:04:36 PM
can anyone tell me where are the winds from ? and why ?


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: anwar on May 21, 2011, 09:01:24 PM
Well there are two runways, one primarily used for landing, and the other for take-offs.  There is at least one plane landing on the runway that is actively being used for take offs. 

Now the question is, is the wind direction against the landing path, or the take off path.  My guess is that it is against the take off path.  Not sure if cross wind take-offs are considered more riskier/problematic as compared to cross wind landings, in full scale operations "headscratch:


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: asupan on May 22, 2011, 12:38:00 AM
I think there is a cross wind  from left to right.

This is because the light aircrafts move off course after takeoff towards the right.
The falcon 2000 deviation in 0:59 seconds is quite distinctive.
The Water ripples seems to be another clue.

Cheers


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: anwar on May 22, 2011, 12:56:43 AM
I think there is a cross wind  from left to right.

That would mean every aircraft is landing WITH the wind, which doesn't sound right.  Not sure if such persistent with the wind landing is common in commercial flights.  There seem to be a few aircraft landing from right to left also, but their numbers are quite small compared to the other way around.

But I do see the exhaust of some of the planes blowing from left to right, although it could be a camera angle issue, where it is actually blowing from the back towards the water body (ie, agains the take off run).

Looking at the water, it seems like the wind is towards us, directly against the aircraft that are taking off :headscratch:  There are times when the water gets blown back due to exhaust from the planes beginning the final take off run.



Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: rcpilotacro on May 22, 2011, 06:13:39 AM
Quite a discussion. Winds are from port of the aircraft (i.e from the left for the aircraft taking off). Why, aircraft always, irrespective of the size weather cocks. at low sped control throw required to compensate this is much more, in fact it is advised to add a little aileron into wind, so that the wing form the windward side doesn't lift. in this case though the winds are quite light, that why it was tricky to find out, smoke is a good lead, water is flowing water,

aim of the question was to make you'll thing like avaitors, after all we are RC Aviators :thumbsup:


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: anwar on May 22, 2011, 12:13:36 PM
Interesting... I live next to the airport, and my house is directly below the final.  So directly below and so close, that the satellite TV reception gets cut for about 3 to 4 seconds every time an aircraft comes to land :banghead:  During some hours of the day, we have one aircraft landing every 3 to 5 minutes (due to the expansion of Qatar Airways, and Doha is their hub).

I have always noticed that the aircraft are landing into the wind (like we always try to follow in RC flying too).  If winds are from left to right, why are so many aircrafts landing from left to right also ?  Wouldn't the wast majority be landing from right to left ?


Title: Re: Runway traffic - 90 minutes compressed into 2:30 minutes
Post by: rcpilotacro on May 22, 2011, 04:44:35 PM
landing into wind is preferable, in fact before a runway is constructed, average yearly wind direction is taken into account before deciding on the runway orientation, the number that is given tot eh runway is one tenth of the nearest whole number magnetic orientation of the runway, sometimes due to runway work etc you do land tailwind, max ground rolling speed limit, LDA (Landing distance available) etc catered for in such a case.