Checking aircraft position

[CaptB]

Hello,

I could not find a property that could help me check the aircraft's position relative to the ground network (on TWY check) Is there anything that could help?

Thanks

[Octal450]

What do you mean by "ground network"?

[CaptB]

I mean the AI ground networks, groundnet, created with WED. I am looking at how feasable a RAAS system is.

[zakalawe]

in C++ we have APis to find the nearest groundnet node, and probably, segment. That layer is not exposed to Nasal right now, but it could be used by a C++ instrument.

[CaptB]

@zakalawe

Ok thanks, I don't have enough free time to dive into the codebase so I'll have to find another way to see if the aircraft might be on a TWY.

[zakalawe]

Well, it's not so much trouble for me to add a Nasal API for this, if you write up what you would like. The only problem is it's not going to give useful answers when the airport is missing a ground-network.

[CaptB]

@zakalawe

If it's not be too much trouble for you, it would be great and it would save some us unprecise guesswork with nasal, a simple boolean value would be sufficient. Also an on runway property would be helpful if it is also something you can provide easily.

Thank you for taking interest.

[zakalawe]

it would save some us unprecise guesswork with nasal, a simple boolean value would be sufficient. Also an on runway property would be helpful

Those are both fine I think, I can't do them in time for the upcoming 2017.1 release but soon after, I'll post when they are available for testing.

Only consideration is the tolerance used, i.e what deviation from the centreline is permitted. I will by default use the runway / taxiway width, is that reasonable?

[CaptB]

Only consideration is the tolerance used, i.e what deviation from the centreline is permitted. I will by default use the runway / taxiway width, is that reasonable?

Yes that's absolutely reasonable, thank you.

[CaptB]

Any word on the discussed properties?