[NO BUG]No CV alignment possible in GPS restricted environment

[QuiGon]

Probably because there's no real easy fix for the issue. It would be a huge task to develop a complete & accurate INS simulation, including CV datalink. Given 95% of people never fly the Hornet without GPS, it's not affecting enough people for ED to acknowledged it needs work.

There is a quick fix for this issue! As I explained in my previous comments in this thread there is the TACAN fix as a workaround untill a real carrier alignment process gets implemented. This workaround worked fine in previous versions, but in the current version it doesn't work anymore.

The problem is indeed that ED just ignores that or in case of BIGNEWY, just states that it works, while in fact it currently does not work!

 

@BIGNEWY/ED: Please take a look at comment #5 in this thread, as I explained there in detail what is wrong.

[drhay53]

I was just looking into this, and one thing the TACAN fix says is required is for the TCN beacon data to be saved in the MC. I was attempting to do the TCN alignment in the first mission of MBOT's dynamic campaign, and I went HSI->DATA->TCN and I noticed that there are no beacons there.

 

I was not able to get it to work on the carrier TCN either; the map never comes up.

 

I haven't been able to test yet on a TCN that's in the MC (the starting point in this mission is too far away from any beacons). But it seems like the big change here is that it used to work for a carrier TCN, and now it doesn't?

Edited July 31, 2020 by drhay53

[Golo]

Probably because there's no real easy fix for the issue. It would be a huge task to develop a complete & accurate INS simulation, including CV datalink. Given 95% of people never fly the Hornet without GPS, it's not affecting enough people for ED to acknowledged it needs work.

 

Sorry what? This is supposed to be simulation of a hornet no? INS is one of the basic aircraft systems since what 1950s? Not being able to align INS without GPS is not a feature its BUG and rather significant one too.

[QuiGon]

But it seems like the big change here is that it used to work for a carrier TCN, and now it doesn't?

Exactly this!!! That's the very core point I want to bring to attention to the devs. The issue isn't limited to carrier TCN stations though. The TCN update doesn't work anymore in general.

Unfortunately the devs/mods don't really seem to understand that this function isn't working anymore (it did work in the past!) and thus renders carrier operations without GPS pretty much impossible... :(

[Frederf]

This has nothing to do with TACAN but when CV-align on a carrier isn't it the SINS cable/radio connection which provides information to the airplane? That should work with zero satellites in Earth orbit.

 

CV has an INS, FA-18 plugs SINS cable in, data is streamed to the airplane to facilitate alignment. That should work in 1890 nevermind 1990.

[QuiGon]

This has nothing to do with TACAN but when CV-align on a carrier isn't it the SINS cable/radio connection which provides information to the airplane? That should work with zero satellites in Earth orbit.

 

CV has an INS, FA-18 plugs SINS cable in, data is streamed to the airplane to facilitate alignment. That should work in 1890 nevermind 1990.

Yes, but that would require the INS to be implemented in our Hornet first. Currently there is just a pseudo alignment as a placeholder and that requires GPS. With the TACAN NAV FIX we were able to correct the own position after a GPS-less alignment on a moving carrier. That TACAN FIX doesn't work anymore though. So we either have to wait until next year when proper INS actually gets implemented or ED restores the TACAN FIX as a stopgap.

[QuiGon]

 

• Corrected INS GND alignment when GPS is not available
  

What about INS CV alignment when GPS is not available (see the first 5 posts of this thread)? :huh:

Edited August 2, 2020 by QuiGon

[Santi871]

What about INS CV alignment when GPS is not available (see the first 5 posts of this thread)? :huh:

 

It is fixed internally.

[QuiGon]

It is fixed internally.

Oh, glad to hear!

 

I guess this thread can then be changed from [NO BUG] to [FIXED INTERNALLY] :music_whistling:

[MirrorNext]

The bug is still present. The CCIP bomb fallline in a mission in 1990 is still horizontal, even after a full alignment and the TACAN procedure. (DCE Mbot mission)

[Ziptie]

The bug is still present. The CCIP bomb fallline in a mission in 1990 is still horizontal, even after a full alignment and the TACAN procedure. (DCE Mbot mission)

 

What position did you move your INS knob to after alignment was completed?

 

 

Cheers,

 

Ziptie

[Frederf]

Sort of a weird notion that somehow INS-based CCIP was completely impossible until the invention of satellites. CCIP is based on a few INS variables but absolute position isn't one of them. 1nm/hr is a knot. If INS horizontal velocity was a full 2 fps off then a 10 second CCIP drop would be at most 20' in error.

[MirrorNext]

> What position did you move your INS knob to after alignment was completed?

 

I moved to NAV.

[Ziptie]

> What position did you move your INS knob to after alignment was completed?

 

I moved to NAV.

 

Try with it in the IFA position to see if it resolves the issue - if the issue is replicable.

 

 

Cheers,

 

Ziptie

[MirrorNext]

 

Try with it in the IFA position to see if it resolves the issue - if the issue is replicable.

 

 

Cheers,

 

Ziptie

 

Mission is set to 1990, so IFA doesn't work. If I set it to IFA, I get a INS ERR on message (or something like that) on the HSI page. And the same behaviour, of fall line being wrong pointing to the side.

 

Either way, I've open a new post and it's now in REPORTED state: https://forums.eagle.ru/forum/english/digital-combat-simulator/dcs-f-a-18c-hornet/bugs-aa/7152096-reported-ccip-bomb-fall-line-horizontal-after-full-alignment

 

So it's indeed a bug.

[Ziptie]

 

Mission is set to 1990, so IFA doesn't work. If I set it to IFA, I get a INS ERR on message (or something like that) on the HSI page. And the same behaviour, of fall line being wrong pointing to the side.

 

Either way, I've open a new post and it's now in REPORTED state: https://forums.eagle.ru/forum/english/digital-combat-simulator/dcs-f-a-18c-hornet/bugs-aa/7152096-reported-ccip-bomb-fall-line-horizontal-after-full-alignment

 

So it's indeed a bug.

 

Perfect. Went through the steps and got it sorted and confirmed as a bug. Well done sir. Bummer, but well done.

 

 

Cheers,

 

Ziptie