V2.6.0 pushback behaviour

[Harrier77 60]

Firstly, I am really enjoying the new taxi behaviour and I appreciate it is early stages for this new way of taxiing. So, this observation is being written to potentially help the development. I have noticed that many pushbacks end up facing the wrong way (180deg out). This results in an elegant 180deg pirouette as the aircraft starts to taxi. It doesn't happen all the time, but quite often. Also, sometimes the taxi out then results in a corner being cut in the taxiway layout with the aircraft going across the grass. These are just observations for your information.

[kiek 1,229]

41 minutes ago, Harrier77 said:

These are just observations for your information.

I am aware of that of course. It is very dificult to predict the pb direction from info in the 30 seconds buffer of traffic data. I have to start the -artificial-  taxi procedure as soon as I see that a new position of the aircraft is further away from the gate than say 55 meters. (The push back is an artificial procdure, not directly controlled by RT data).

There might be info in the airport files, per stand, about push back left, right or both (for the better commercial add-on). PSXTrafic did not collect that data sofar because almost 80% of the gates have pushback both, so it will not improve the outcome a lot. But maybe I will add it later, just to be as real as possible.

Edited September 3, 2023 by kiek

[Harrier77 60]

Hi,

Would this be a solution to the pushback direction issue: RT gives the taxi movement and direction after the pushback, so would it be possible to read this information for your own pushback procedure algorithm?

[kiek 1,229]

52 minutes ago, Harrier77 said:

 RT gives the taxi movement and direction after the pushback.

RT does not have that info.

[Harrier77 60]

5 minutes ago, kiek said:

RT does not have that info.

OK, but surely when an aircraft moves RT knows this, and in what direction? It shows this on the RT display. I am obviously missing something here. Anyway, it was just an idea to help solve the pushback direction.

[kiek 1,229]

4 hours ago, Harrier77 said:

OK, but surely when an aircraft moves RT knows this, and in what direction? It shows this on the RT display. 

First: that info is not in the traffic data stream coming from RT.  

Second: if it would be in, it would come much too late.

Third: If it would be that easy I'd have impemented it already 7 years ago 😉 

Edited September 5, 2023 by kiek

[Harrier77 60]

OK, Nico. Can I make a suggestion for a possible solution?

How about making all pushbacks straight pushbacks? With this all the aircraft would do after the push is complete is to turn 90deg left or right as required when it starts to taxi. It would avoid the current quite often seen 180deg pirouette as the aircraft taxis off if it ends up pointing in the wrong direction from the pushback?

Anyway, just an idea.

[ScottecLEMD 2]

Within the AED/AFCAD file, you can specify which direction you want to pushback from each gate, left, right, both or none.  I have this set for for my UK2000 EGPF scenery.  However, it seems to operate in reverse when using PSXT i.e. imagine you are in the cockpit facing forward.  A pushback to the right would place the tail to the right and the nose to the left, similar to how GSX works.  But, I have noticed that all my AI's at EGPF now push back the opposite way, thereby ending up, in most cases, facing the terminal  🙂

I have amended my AED file to see if this theory plays out.  Will let you know!

Brgds

Ken

[kiek 1,229]

3 hours ago, ScottecLEMD said:

Within the AED/AFCAD file, you can specify which direction you want to pushback from each gate, left, right, both or none.

PSXTraffic does not read that info from the airport .BGL file.