need track replay F16 steerpoints not accurate after re-arm, refuel, entered manually from F10 map when on ground.

[Shaki]

Using MT instance. Map: Caucasus. Multiplayer. Wind 304 at 6m/s.
Initial target steerpoint 5 as entered on mission editor, the TGP lines up perfectly with target.
When I land, rearm and refuel, and enter new target steerpoints precisely with use of the F10 map, when I return to target area, the steerpoints are some distance off. This seems to get worse as the mission time increases. I even tried to re-align INS on ground and in flight but the issue persists.

I have a track file, but it is too large, I don't know how to shorten it?

Edited April 2, 2024 by Shaki

[BIGNEWY]

Hi, 

we will need to see a track replay showing the issue to investigate. 

Can you confirm your INS is aligned correctly?

[_SteelFalcon_]

1 hour ago, Shaki said:

Using MT instance. Map: Caucasus. Multiplayer. Wind 304 at 6m/s.
Initial target steerpoint 5 as entered on mission editor, the TGP lines up perfectly with target.
When I land, rearm and refuel, and enter new target steerpoints precisely with use of the F10 map, when I return to target area, the steerpoints are some distance off. This seems to get worse as the mission time increases. I even tried to re-align INS on ground and in flight but the issue persists.

I have a track file, but it is too large, I don't know how to shorten it?

 

What year is your mission set in? If its before a certain date, GPS wont be available and you‘ll encounter INS drift. I think the key date is March 28, 1994. Anything before that has no GPS

Edited April 2, 2024 by _SteelFalcon_

[MarvK]

A-G mode, ground radar, CZ (curser zero), I think it’s below snowplow. Works for me when I have INS drift. Sounds like that’s what’s happening to you.

[_SteelFalcon_]

28 minutes ago, MarvK said:

A-G mode, ground radar, CZ (curser zero), I think it’s below snowplow. Works for me when I have INS drift. Sounds like that’s what’s happening to you.

CZ sets it to the steerpoint, so it will be off target if you have INS drift.

[Shaki]

On 4/2/2024 at 11:19 AM, BIGNEWY said:

Hi, 

we will need to see a track replay showing the issue to investigate. 

Can you confirm your INS is aligned correctly?

My track file is too big to upload. Is there any way to reduce the size/cut off the start and end to only the relevant parts?

Yes INS aligned. Initial target steerpoint was set in Mission Editor to target a specific tank. In mission, after first takeoff, maverick in PRE mode locked my TGP to that exact tank, as expected. But after going back to re-arm and refuel, I would enter new coordinates precisely and they would not translate to the correct position anymore.

[Shaki]

On 4/2/2024 at 12:49 PM, _SteelFalcon_ said:

What year is your mission set in? If its before a certain date, GPS wont be available and you‘ll encounter INS drift. I think the key date is March 28, 1994. Anything before that has no GPS

 

Good note, but it is 2018.

[BIGNEWY]

30 minutes ago, Shaki said:

My track file is too big to upload. Is there any way to reduce the size/cut off the start and end to only the relevant parts?

Yes INS aligned. Initial target steerpoint was set in Mission Editor to target a specific tank. In mission, after first takeoff, maverick in PRE mode locked my TGP to that exact tank, as expected. But after going back to re-arm and refuel, I would enter new coordinates precisely and they would not translate to the correct position anymore.

no way to shorten tracks sorry, if you are able to repeat the issue in a shorter track it may be the best option. 

thank you 

[Eggcake]

I feel like I have the same issue. I started learning the Viper just a week ago, flew the Hornet mainly before.

I mainly played on 4YA MP Servers (so quite simple setup) and noticed that at some point my steerpoints were way off. I thought I did something wrong, and started training a bit on a simple mission (just a few ground targets and a few waypoints on the ground). I started, dropped bombs, no issue. I landed, rearmed and now the waypoints are completely off. I didn't do anything else and it was also a hot start, so I did not mess up the cold start procedure.

 

I just added a few screenshots. You see the steerpoints on the map. I have the second one selected, right next to the ocean. Both the HMD and HUD display it in the water. I have also added a track file.

 

Edit: Added a second example from Multiplayer. You can see from the cockpit view that the steerpoints displays correctly on the HSD, slightly to my left. If I follow the cue however, it's a bit more to my right and around 90nm away, far far away from anything. I had this again after rearming/refueling.

f16_issue.trk

Edited June 15, 2024 by Eggcake

[Tholozor]

@Eggcake The presence of the Cursor Zero option tells me you have a slew delta in the system. Press CZ and see if that fixes it.

[Eggcake]

Doesnt cursor zero just appear to slew back to sterpoint? When I click that, it just slews to the steerpoint which is just at the wrong place.

It doesnt have anything to do specifically with the TGP, it's as soon as I rearm, it's messed up, with or without TGP.

Edited June 16, 2024 by Eggcake

[MarvK]

3 hours ago, Eggcake said:

Doesnt cursor zero just appear to slew back to sterpoint? When I click that, it just slews to the steerpoint which is just at the wrong place.

It doesnt have anything to do specifically with the TGP, it's as soon as I rearm, it's messed up, with or without TGP.

 

Try using cursor from the ground radar, not the TGP.  This works for me almost all the time.

INS loses its accuracy if you are pulling high G’s or violent maneuvering.

[Eggcake]

Sorry, but that cannot be the explanation. I appreciate the responses, but you can't be serious if you are saying that after pulling a few high G maneuvers (which has nothing to do with it, again it's the rearming/landing that does it) my steerpoint is suddenly 80nm away from its original location. 

[Tholozor]

Does it act any different with the Maverick in PRE instead of VIS?

[Mapi]

Am 15.6.2024 um 18:16 schrieb Tholozor:

@Eggcake The presence of the Cursor Zero option tells me you have a slew delta in the system. Press CZ and see if that fixes it.

"you have a slew delta in the system" ? Which system? It's in the code of the game - man.

[Tholozor]

When a steerpoint in the F-16 is moved, it applies a relative slew delta (change) to the entire steerpoint database.

For example, if steerpoint 1 is slewed 50 feet to the north, then every single steerpoint is also slewed by the same amount in the same direction.

 

Edited June 18, 2024 by Tholozor

[Mapi]

I also noticed it before the Kola Map came out.
Hot Jet F-16, flew for several hours, bombing, reloading, circling, bombing. MP/SP.
Offset -> HUD
Offset -> TGP
Autopilot - forgot whether 2D or with 3D offset. I have already deleted the pictures.
F10 2D MAP - OK
I wanted to load another picture, I'll save it.

I found it is an old problem in the "system":

"Waypoint bug F-16C? Tadpole shows different direction than what is indicated on HUD?" (2022)

[Furiz]

5 hours ago, Mapi said:

I also noticed it before the Kola Map came out.
Hot Jet F-16, flew for several hours, bombing, reloading, circling, bombing. MP/SP.
Offset -> HUD
Offset -> TGP
Autopilot - forgot whether 2D or with 3D offset. I have already deleted the pictures.
F10 2D MAP - OK
I wanted to load another picture, I'll save it.

I found it is an old problem in the "system":

"Waypoint bug F-16C? Tadpole shows different direction than what is indicated on HUD?" (2022)

There is new INS logic at hand with some recent update, that might be the cause.