How do I get autopilot to work?

[CBenson89]

I haven’t flown the tomcat in some time but my autopilot reference command doesn’t remove the ap ref message any more thanks all!

 

 

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[CBenson89]

I haven’t flown the tomcat in some time but my autopilot reference command doesn’t remove the ap ref message any more thanks all!
 
 
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I turn on my autopilot altitude and heading hold flip engage on and go to press the AP reference and nothing happens is there something I’m missing thanks!


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[RPY Variable]

You need to get the vertical velocity to 0, in a steady level flight and then click the nose wheel steering button. 

Then the "a/p reef light" should go off and autopilot is flying the aircraft. Is very important the the vertical velocity is close to cero. If not it will not engage.

Edited November 7, 2021 by RPY Variable

[Mopeyranger0681]

13 hours ago, RPY Variable said:

You need to get the vertical velocity to 0, in a steady level flight and then click the nose wheel steering button. 

Then the "a/p reef light" should go off and autopilot is flying the aircraft. Is very important the the vertical velocity is close to cero. If not it will not engage.

 

After the last patch, it is nearly impossible to get the vertice velocity to zero. Turns good, but can't trim it for shit no matter what anymore. 

[Northstar98]

Personally, I don't have too much of a problem but IIRC the limits are ± 200 FPM, there might also be a constraint for the rate of change of vertical velocity but not sure.

[Callsign JoNay]

21 hours ago, Mopeyranger0681 said:

After the last patch, it is nearly impossible to get the vertice velocity to zero. Turns good, but can't trim it for shit no matter what anymore. 

Not sure why you think that, trim switch works fine for me. I have no issues engaging the AP, it's the behavior after it's engaged that is wonky.

[Biggus]

Yup, no issues with trim here.  What I do have an issue with is that if you aren't quite within the parameters for the alt hold to engage, pressing the NWS button to engage it seems to generate a pitch-down moment.

[Skarp]

On 11/8/2021 at 7:16 PM, Biggus said:

Yup, no issues with trim here.  What I do have an issue with is that if you aren't quite within the parameters for the alt hold to engage, pressing the NWS button to engage it seems to generate a pitch-down moment.

The alt hold pushes the nose down causing it to exceed the 200fpm limit kicking off alt hold. I’ve gotten it to work at 32k feet standard temp/pressure but above that I can’t.

[Bananabrai]

For me it always pitches down to ~1000fpm negative and holds that. Was working perfectly in the past.

[Baz000]

Same result here, too when I try using AP... Get into an immediate 1,000 fpm descent even if I am trimmed level when activating AP.

For now boys, gonna have to use your trim as your AP... Will be very good practice tho.

[ustio]

On 11/8/2021 at 2:14 AM, Mopeyranger0681 said:

After the last patch, it is nearly impossible to get the vertice velocity to zero. Turns good, but can't trim it for shit no matter what anymore. 

doesn't need to be 0, you need to be within 200 fpm. if you are withing that envelope you should be able to engage the AP once you oress NWS.

 

 

[Thomas_LOLW]

...I flew the F-14 yesterday and the AP does work as described in the update report from Heatblur (vertical velocity needs to be within +/- 200 fpm).

However, you should be either well below Mach 1 or above, if you are close to sonic speed, the vertical velocity gets crazy (don't know if that is a bug or intended).

[ustio]

If you are having trouble in getting level at high speed, just switch to landing mode on the HUD, place VV on the Horizon line and trim it until there is no more stick force.

 

Atleast thats what i do

[draconus]

7 hours ago, Thomas_LOLW said:

if you are close to sonic speed, the vertical velocity gets crazy (don't know if that is a bug or intended).

It's real behavior in transsonic region.

[Hector45]

On 11/8/2021 at 12:11 PM, Callsign JoNay said:

Not sure why you think that, trim switch works fine for me. I have no issues engaging the AP, it's the behavior after it's engaged that is wonky.

This is the issue I have. When I settle between +/-200FPM ref light will go out but will then pitch down, once I get -1000fpm light comes back on. They said it's a wip, so we'll see what happens with the next update.

[Gentoo87]

All described above I can replicate, the jets autopilot no longer functions as intended.

 

[IronMike]

All issues known and being worked on. The new FM changes simply demand for an autopilot overhaul from us, aka rebuilding parts from scratch and making it better and more adjustable for the future, too. Thank you for your kind patience and for your reports.

[CBenson89]

All issues known and being worked on. The new FM changes simply demand for an autopilot overhaul from us, aka rebuilding parts from scratch and making it better and more adjustable for the future, too. Thank you for your kind patience and for your reports.

Thanks for making a kick ass module!


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[Reccelow]

Also experiencing this.  As an experiment, select main AP ON then very slowly add slight back pressure.  In my sim install this causes an increasing pitch down.  Curious if the same for anyone else. Possibly connected to the AP ALT HOLD issue...