F-14B ACLS Auto-pilot makes too aggressive corrections to flight path

[Coyote_One]

Over the course of the last few weeks Ive started flyng more and more CASE III's. I havent messed with the ACLS lately since I know it can be really "iffy" sometimes. I fly a really nice clear day straight in on this video and I believe that the autopilot make far too aggressive corrections to get on course. at the 23 second mark youll see the activation of the autopilot as the nose dives 10+ degrees towards the ocean. I feel that maybe its possible to give limits on how many degrees of bank and pitch is allowed with the ACLS on.

Of course this is coming from a guy who knows nothing of scripting flight models etc etc.

But it would make sense to me that limiting the amount of autopilot corrections to less than like 5 degrees of any axis would help. Ive had many times during a night, IFR CASE III and it dives or banks so far initially that it gets so far off course ill have to wave off otherwise ill plow into the ocean.

I think we all agree this module is BADASS and really sets the bar high for ED and anything in the future. This birds been my go-to since release. But this has been on my mind since I rarely fly it in clear weather days and its nice to have the ACLS when needed.

On that note I think I can fly a pretty stable on close to the center approach in the video and it still seems to dive a lot. I would imagine if you were a little further off it would dive and become un-recoverable. Also it does seem to track the FLOLS a bit low too but it looks to be fine on the Alt F9 LSO camera. 

Hopefully this helps or maybe its already been reported but I wanted to bring it up since its a moderate level issue.

SINGLE PLAYER

SUPERCARRIER - ROOSEVELT

F-14B

ICLS CHANNEL 11

TCN - 74X

AFCS on and set to ACL, Autothrottles ON, ACL hud selected. Datalink set to Roosevelt via Jester Menu all completed prior to recording


 

 

Edited January 20, 2021 by Skuzzlebutt
Typo

[draconus]

IFLOLS overlay is wrong because it's calibrated for the Hornet currently.

[Coyote_One]

On 1/21/2021 at 11:24 AM, draconus said:

IFLOLS overlay is wrong because it's calibrated for the Hornet currently.

Unless the ACLS in the airplane is tied to that FLOLS icon thats not what im getting at. The point being the autopilot takes extremely large over-corrections to get on course. Half the time I end of having to wave off from it

[Zergburger]

the only large correction i see is the initial pitchdown to get you on glideslope, try being better aligned before engaging ACLS.

[Dentedend10]

On 1/20/2021 at 10:57 AM, Coyote_One said:

Over the course of the last few weeks Ive started flyng more and more CASE III's. I havent messed with the ACLS lately since I know it can be really "iffy" sometimes. I fly a really nice clear day straight in on this video and I believe that the autopilot make far too aggressive corrections to get on course. at the 23 second mark youll see the activation of the autopilot as the nose dives 10+ degrees towards the ocean. I feel that maybe its possible to give limits on how many degrees of bank and pitch is allowed with the ACLS on.

Of course this is coming from a guy who knows nothing of scripting flight models etc etc.

But it would make sense to me that limiting the amount of autopilot corrections to less than like 5 degrees of any axis would help. Ive had many times during a night, IFR CASE III and it dives or banks so far initially that it gets so far off course ill have to wave off otherwise ill plow into the ocean.

I think we all agree this module is BADASS and really sets the bar high for ED and anything in the future. This birds been my go-to since release. But this has been on my mind since I rarely fly it in clear weather days and its nice to have the ACLS when needed.

On that note I think I can fly a pretty stable on close to the center approach in the video and it still seems to dive a lot. I would imagine if you were a little further off it would dive and become un-recoverable. Also it does seem to track the FLOLS a bit low too but it looks to be fine on the Alt F9 LSO camera. 

Hopefully this helps or maybe its already been reported but I wanted to bring it up since its a moderate level issue.

SINGLE PLAYER

SUPERCARRIER - ROOSEVELT

F-14B

ICLS CHANNEL 11

TCN - 74X

AFCS on and set to ACL, Autothrottles ON, ACL hud selected. Datalink set to Roosevelt via Jester Menu all completed prior to recording


 

 

 

I'm having the same issue. I've been flying the Case III recovery mission in Caucasus or Persian Gulf under Instant Action.

I'm pretty confident in my alignment with the needles. I had auto-throttle on at around 8 nm which kept the AOA very nicely within range. However, when I engage the autopilot with the nosewheel steering button (after all the correct lights light up) at around 4 nm with the needle being centered, the autopilot makes a dive. After that, the autothrottle also goes out of whack and it's always overcorrecting (despite the fact that before autopilot engagement it was holding the AOA nicely). I tried different outside temperature settings for the auto-throttle with no real difference in the way it controlled throttle.

The autopilot flies low with regards to IFLOLS overlay. It lands on the carrier, however, with the large AOA swings it's a pretty bad approach and I can manually do better.

 

What is going on with ACLS currently?

 

 

[draconus]

1 hour ago, Dentedend10 said:

What is going on with ACLS currently?

It is WIP, read my previous answer on IFLOLS and ACLS was not reliable IRL too.

[Dentedend10]

18 hours ago, draconus said:

It is WIP, read my previous answer on IFLOLS and ACLS was not reliable IRL too.

Thanks for the quick response. I was just confused how people on Youtube have wire#3 videos on ACLS and their ride seems much smoother even if their lineup with the needles is less favourable than mine. I'll just have to wait it out then!

[Dentedend10]

Follow up on this topic. Turns out, I might have been following the 'wrong' needles. My displays were on ILS, so when I switched on ACLS, the plane had to correct for the correct needles. Did not know that ACLS and ICLS show different signals. Posting this in case anyone is in the same boat