HSI / VOR1 Misalignment
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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)
@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?
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Maybe they just need to add a compass deviation card?
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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:
@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.
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Maybe they just need to add a compass deviation card?
@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 ;)
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@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.
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@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.
@vcapra1 Well done that man! I had suspected centre of rotation not being centre of texture might be part of the issue but you've taken it further than that. No wonder my navigation has been off.
I trust you are providing this to the Support guys. I'm sure they will welcome what you've done to help get this resolved.
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@vcapra1 Well done that man! I had suspected centre of rotation not being centre of texture might be part of the issue but you've taken it further than that. No wonder my navigation has been off.
I trust you are providing this to the Support guys. I'm sure they will welcome what you've done to help get this resolved.
@Sender46 Yeah I just added this info to the ticket I have open. I was gonna wait until I did the same sort of thing with the VOR but idk if I will have a chance to do that today.
The issue still boggles my mind. If the center of rotation were off, and nothing else, I'd expect to see both the E and the W too far to the left of the centerline when facing East. But that's not what I see, the E is to the left and W is to the right. So the center of rotation may be off, but I don't think it's off by enough to cause this problem. Or, not by itself anyway. The fact is the actual compass is rotating further than 90 degrees when turning N to E.
Additionally, here's what the texture looks like when I overlayed it:
I positioned it by aligning the N, E, S, and W ticks with their lines as closely as possible. You'll notice that the center crosshair doesn't align perfectly with the center "tick" (or whatever it's called) on the CDI gradations. This is in with your theory about the center of rotation being off, which may contribute to the issue.
