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Posted

Hi, so in our practice flight today, myself and buddy experienced something strange which we were unsure was a bug, a mode linked behaviour we were unaware of, or a hardware issue. We have both experienced it before on occasions but have never asked about it, so here goes...not sure EXACTLY what we were doing beforehand, but nothing we were aware of that was any different than usual....

We were using Hellfires and a JTAC. I had acquired the JTAC lased target using the auto aquire on the RHG tedac. Afterwards, no matter what I did, which sight, weapon etc, the TADS appeared to be moving itself...you could slew it, but it would not stop when you stopped slewing. Externally, in F2 the TADS was moving around. I could slave it to a target and it stayed on the target but as soon as I unslaved, it start wandering around again. 

I crewed into another Apache and the TADS was working exactly as it should, which would rule out any hardware issue with a sticky cursor etc. 

Is there any mode the TADS can get into where this might happen? Its not like the auto aquire search pattern it will wander wherever you move it to and then release.....

I would really like to understand what was happening & why! 

 

Thanks! 

System specs: PC1 :Scan 3XS Ryzen 5900X, 64GB Corsair veng DDR4 3600, EVGA GTX 3090 Win 10, Quest Pro, Samsung Odyssey G9 Neo monitor.

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Posted
4 hours ago, markturner1960 said:

you could slew it, but it would not stop when you stopped slewing.

This sounds like LMC got enabled.  And since you didn't mention it in your troubleshooting above, perhaps you aren't familiar with it?

When LMC is enabled, instead of the TADS slewing with your input and coming to a dead stop when you release your controls, it behaves like it has momentum, and your inputs on the thumbstick are like applying vector forces to modify its current slew rate and direction.  So tap it to the right a few times and it builds up speed slewing to the right, then to slow it down again tap it to the left a few times to scrub off the speed.

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Posted

Floyd, you are describing exactly what happened, that must be it ! Who knew! It is a function I have never actually got to grips with, so perhaps now is teh time to explore how it works so it does not catch us out again! 

@Smashy thanks, but definitely was not LST, as I am very familiar with that behaviour and it was different, but thanks for the suggestion.....

System specs: PC1 :Scan 3XS Ryzen 5900X, 64GB Corsair veng DDR4 3600, EVGA GTX 3090 Win 10, Quest Pro, Samsung Odyssey G9 Neo monitor.

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Posted

LMC is useful when searching for targets in a general area while you are on the move, especially off to one side or the other of your aircraft.

Get a good laser range to the area you want to work in, and then enable LMC.  From there you can nudge it around with short blips.

Before IAT was functioning in the module, LMC was your only option for tracking a moving target while your missile was in the air, or while tracking a stationary target while your aircraft was moving.  Once you get the hang of it, it is quite powerful.  And don't forget to update your range with the laser before enabling it, otherwise it tries to compensate for something at the wrong distance from the TADS sensor.

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