HSI / VOR1 Misalignment

N293WK

Here's a demonstration of the offsets in the 4 compass directions:

Sender46

@vcapra1 The error is there regardless of whether NAV mode or GPS mode are selected on the hidden clickspot.

Martyn

This will be fixed in the next update.

N293WK

@Martyn Yay! This update gets more exciting every day

Sender46

@Martyn Thank you. I love how the change log keeps getting longer :)

Cristi Neagu

@Sender46 This next update is going to be epic. So many fixes and so many QoL improvements.

N293WK

This seems to still be an issue in 0.4

Sender46

@vcapra1 It's pretty close me with v0.4.0a. Only 1 degree out now (e.g. 330 on VOR1 & 329 on HSI). Maybe a little tweak needed (being nitpicky).

N293WK

The HSI is spot on (give or take a degree, but that's fine). But the NAV1 radial is still off by 3-4 degrees at 180, and off by 1-2 degrees at 90 and 270:

N293WK

Strangely, NAV2 is also off but less so:

Sender46

@vcapra1 So what you're saying is the HSI needle matches the VOR1 needle (within a degree) but the Cockpit Tooltips don't match the VOR needles?

N293WK

No, sorry. I'm basing this off the tooltips being 100% accurate, so the HSI matches the tooltips almost exactly, but the NAV ones do not. It can be concluded from this that the HSI and NAV don't match up at all times (the effect is most dramatic at 180, which is why I show that)

Sender46

@vcapra1 That might explain why my navigation is a bit off when I compare my flight path with the flight plan on Little Navmap. Have you raised a ticket?

N293WK

@Sender46 Just submitted a ticket

Sender46

@vcapra1 said in HSI / VOR1 Misalignment:

... I'm basing this off the tooltips being 100% accurate ...

I concur with that. I just navigated a flight using the tooltip numbers and the flight path accurately followed the flight plan on Little Navmap. Like you say, the VOR dials are still inaccurate and more so at around 180 degrees. It's as if maybe the point that the VOR dials are rotating around is not their exact centre?

N293WK

Just realized that the heading indicator itself is showing the incorrect heading. For, example, if I point 090 degrees (as shown on the external camera indicator), this is what I see:

weptburrito

Maybe they just need to add a compass deviation card?

Sender46

@vcapra1 said in HSI / VOR1 Misalignment:

Just realized that the heading indicator itself is showing the incorrect heading. For, example, if I point 090 degrees (as shown on the external camera indicator), this is what I see:

Or maybe the external camera indicator is wrong as well, in which case I don't care about that.

The HSI does match the HSI tooltip, which also matches the VOR tooltip. It seems to be the VOR itself that is inaccurate for me and that varies depending on the direction.

Sender46

@weptburrito said in HSI / VOR1 Misalignment:

Maybe they just need to add a compass deviation card?

LOL, or a VOR deviation card? Joking of course ;)

N293WK

@Sender46 said in HSI / VOR1 Misalignment:

The HSI does match the HSI tooltip

Point your aircraft due East and set the HSI course to 090. The HSI course indicator will align perfectly with the little airplane in the middle of the HSI, which is good, but both the compass ring around the outside of the HSI is not aligned, it will indicate like 095.

I've overlayed an alignment texture and recorded a video of a full 360 turn, which shows the HSI fall out of alignment as it approaches 090, then slowly come back into alignment as it approaches 180 and, oddly, stays in alignment at 270:

https://drive.google.com/file/d/1qVx1Tt-5ycn_rcdD4dQuiO7f5i42urcA/view?usp=sharing (I think this is still being processed, it will be easier to see once the higher res version is available)

You'll also notice that the center of rotation is not the center of the texture, which is made more apparent by this image:

This is of course made even more confusing by the inaccuracy of the VOR instruments, but I have yet to analyze those in the same way.