Simviation Forum - Luton EGGW

Aug 28^th, 2007 at 5:20am

vololiberista Offline
Colonel
Vieni in Italia

Posts: 1042

I have a little problem with AI at Luton Airport.
The procedure is for pilots to taxi onto the rwy and turn on the turning circle prior to lining up. This is for both rwy 26 and rwy 08. In the sim AI taxis and turns on the turning circle for rwy 08 but NOT for rwy26.

I can't see anything in the afcad file that would or would not hinder this procedure other than the displaced threshhold and overrun areas are different.- Any ideas??
Many thanks
Vololiberista

Andiamo in Italia&&

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Reply #1 - Aug 28^th, 2007 at 7:03am

ivormills Offline
Colonel
South West England

Gender:
Posts: 180

Hi,

I am no expert Wink

but you may like to try this.

On your afcad the main difference I notice is on Runway 8 you have one taxi direction marking (left turn) and on runway 260, direction in both directions. This is because there is an additional node after the taxiway before the turnaround. Try deleting this node and then reconnect the runway link from end to taxway runway node.

I am not sure if this will make any difference, but let me know if it works

Ivor

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Reply #2 - Aug 30^th, 2007 at 5:39am

vololiberista Offline
Colonel
Vieni in Italia

Posts: 1042

ivormills wrote on Aug 28^th, 2007 at 7:03am:

Hi,

I am no expert Wink

but you may like to try this.

On your afcad the main difference I notice is on Runway 8 you have one taxi direction marking (left turn) and on runway 260, direction in both directions. This is because there is an additional node after the taxiway before the turnaround. Try deleting this node and then reconnect the runway link from end to taxway runway node.

I am not sure if this will make any difference, but let me know if it works

Ivor

Hi, Actually what you describe was my own addition!! It didn't work!!
It is a mystery as to what tells the AI to turn around.
Vololiberista

Andiamo in Italia&&

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Reply #3 - Aug 30^th, 2007 at 9:13am

dave3cu Offline
Colonel
Procrastinate now, don't
put it off.
3CU, Northern Wisconsin, USA

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Posts: 3077

After some experimenting..........

Adding normal taxi links to the turnaround seems to do the trick. Apparently this tells the ai 'a turnaround is there, use it'. Without the links the ai apparently will position anywhere as long as there is enough runway ahead for takeoff. (There isn't enough runway ahead at the taxiway B/Rwy 8 intersection so they make the right turn)

Configure the taxi links: width=1 ft., no lines so they are invisible.

Dave

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

I intend to live forever....so far, so good. Steven Wright

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Reply #4 - Aug 31^st, 2007 at 3:22pm

vololiberista Offline
Colonel
Vieni in Italia

Posts: 1042

I had a look at my local airport Cuneo Levaldigi LIMF where the taxiway intersects the rwy about midway. So for rwy21 a/c have to taxi to the end and turn.
In order for the a/c to do this the rwy in question must have an 'overrun' area directly attached to the threshold, AND the taxiway must be downwind of the touchdown zone markings. This seems to make the AI anter and taxi down the rwy. As for turning on the turning circle itself the AI do that automatically but i will try your suggestion to see if they perfom more neatly.
Many thanks
Vololiberista

Andiamo in Italia&&

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