Unable to give A/C own position for INS after new base startup

[Rissala]

Issue is with missions set to pre-GNSS time. The aircraft own position is automatically set for INS alignment after first startup. This is shown upfront when HSI page is selected. There is no method to give updated locations for INS. After second takeoff A/C position is incorrect.

Issue can be reproduced with:

1. Set time to pre GPS
2. Do normal alignment
3. Takeoff
4. Land at a different location
5. Shutdown cold and dark
6. Power back on
7. A/C own position is still at old startup location with no method to give new location coordinates on HSI subpages.
8. All update methods are also non-functional (TACAN etc..)

[Kah0tika]

Set the parking brake on

[Rissala]

10 hours ago, Kah0tika said:

Set the parking brake on

did you read my post?

[Kah0tika]

Once again. Did you set your parking brake ON?
If you did then upload a track file so we can reproduce/troubleshoot.
 

Edited 22 hours ago by Kah0tika

[Rissala]

7 hours ago, Kah0tika said:

Unable to reproduce.

 

Hi, 

Here is a track with the issue:

INSCOLDDARK.trk


Yes, my parking brake is on since it is impossible to even attempt an alignment without it engaged.

7 hours ago, Kah0tika said:

• Date set in 1900.
• INS can update on STD HDG and TCN.
• A/C coordinates seems correct on GND at both locations after complete shut down and restart.

Steps to reproduce:

1. Set date to pre GNSS
2. Startup, align and takeoff
3. Land at a new location
4. Shutdown cold&dark
5. Startup&align
6. A/C is now at the initial position, not at current position

I would imagine this problem to be "W.I.P", since inside the HSI A/C submenu, there is a UFC option, which lists "position" as an option on the UFC panel. This is unfortunately non-functional, so A/C own position cannot be manually set.

Workaround is to never shut down cold&dark at remote locations to never lose INS alignment. (ground AC power is an option)

[Kah0tika]

You have to use "STD HDG" (Stored Heading) on HSI page.

I took control of your track after landing to demonstrate the correct procedure.

I'm not type rated on FA18 but I would assume you could enter coordinates in order to give a precise reference for the INS alignment (ie parking coordinates) in the real A/C.
As far as I understand the STD HDG is a kind of "Align on REF" (last known position of the A/C) which is what you would do in absence of good GPS signal, provided you didn't tow the plane after shutdown in which case you'd have to use either parking or airport coordinates.
The system should update itself afterward anyway using DME/DME/TCN. It just help the INS to align faster.
EDIT:
It's confirmed working as intended ingame. Even if you don't use STD HDG you can update your pos. afterward using TCN (Provided you enter one that the A/C is able to receive) and it will update your position. It will take way longer to align your INS this way though so use STD HDG instead.

Anyway...here's the track file

INSCOLDDARK_Correct_Procedure.trk

Edited 7 hours ago by Kah0tika

[Kah0tika]

INS update with TCN :

 

[Rissala]

6 hours ago, Kah0tika said:

You have to use "STD HDG" (Stored Heading) on HSI page.

This is not correct. Check video. After STD HDG alignment, aircraft position is still at initial startup (WP0). Check the coordinates at alignment, they are always set at initial position. I even tried to set WP0 to new position but it wont work.
 

 

A/C is at Sukhumi rwy in the video, not Batumi (initial position)

 

6 hours ago, Kah0tika said:

As far as I understand the STD HDG is a kind of "Align on REF" (last known position of the A/C) which is what you would do in absence of good GPS signal, provided you didn't tow the plane after shutdown in which case you'd have to use either parking or airport coordinates.

It is a procedure  where the aircraft INS saves the precise true heading of the plane in memory (DTC). Special setup is needed before shutdown, currently non-functional in game. F15E module has the QRF start option inside mission editor which is realistic. 
I assume that the initial position is from the DTC (beginning of each mission IRL) and the UFC is a backup to give initial position.

 

6 hours ago, Kah0tika said:

Provided you enter one that the A/C is able to receive

My initial issue was that in the Syria map, there are lots of airbases where TACAN is not available. Also, I know that TACAN aligns the INS perfectly in DCS but its not a very elegant workaround... + this workaround does not work on an airbase without TACAN.

 

I am just asking for an ability to set the A/C own position on the HSI A/C submenu (video above) so that this module can align INS on every airbase, not just at mission start.

[Kah0tika]

This is absolutely wrong.
Either you didn't click STD HDG either your game is bugged.
I've demonstrated you twice that the coordinates where correct.
I don't know what you're on about but this is 100% working.
I've provided you 2 options to make this work 100% of the time.

If this is just a rant to get an option integrated then go to the wish list forum. 

Edited 3 hours ago by Kah0tika

[Rissala]

22 minutes ago, Kah0tika said:

Either you didn't click STD HDG either your game is bugged.

Can you have a look at the video? The coordinates are not correct upon alignment and STD HDG is boxed.
After alignment the aircraft own pos is at batumi, but the plane is at sukhumi physically.

 

22 minutes ago, Kah0tika said:

If this is just a rant to get an option integrated then go to the wish list forum. 

This is a genuine issue with the module. I am unable to get a correct position on another airbase after cold&dark, simple as that. Is there something more I could do to help solve the issue?

I would hope that modifying the INS position would become available through UFC.

Edited 3 hours ago by Rissala

[Kah0tika]

I don't know what's wrong with you but I'm done.

1. This works perfectly
2. Your attitude is absolutely unacceptable
3. You seem to try to create a problem in order to get a feature

I'll leave it there now.
As far as I've demonstrated it, the two INS are working perfectly with or without GPS and even without TCN.

So This is Correct regardless you're able to understand it or not.
And by the way, you're welcome my Majesty...

 

Edited 4 minutes ago by Kah0tika

[Rissala]

8 minutes ago, Kah0tika said:

I don't know what's wrong with you
 

 

Ah I found the difference! You unbox, then rebox STD HDG which seems to snap the position to the correct position. Didn't know about that.

On another note, STD HDG IRL is not really supposed to work like that, but its fine for the sim.

[Kah0tika]

In aviation it's called a reset.