Autopilot not holding altitude.

[LazyBoot]

7 hours ago, Nealius said:

BARO alt hold works fine for me, but only once per mission. If I deselect BARO the UFC claims AP is still on. If I use paddle switch to turn AP off, I am then unable to get BARO to work again for the duration of the mission. It will * in the UFC, but won't actually work.

Are you pressing the AP button on the UFC to turn the AP back on?

[Nealius]

8 minutes ago, LazyBoot said:

Are you pressing the AP button on the UFC to turn the AP back on?

AP menu is already up, so no (Hornet habit). Perhaps that's what I'm missing. I thought AP button was a menu access button, with BARO/RDR/HDG and such being the "on" button.

Edited July 23, 2023 by Nealius

[Holbeach]

AP, (A), is AP on, Attitude Hold, then the sub menus.

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Edited July 23, 2023 by Holbeach

[Nealius]

That was it. Going back throug the AP menu and it works fine.

[Sarge55]

Also don’t forget there is no auto throttle control, you need to monitor your speed. I found that if I got slow there would be some bobbing trying to hold the AP setting. 

[Mistermann]

1 hour ago, Sarge55 said:

Also don’t forget there is no auto throttle control...

Because it hasn't been included yet in EA or it doesn't exist in the 4+ version being modeled?

[Sarge55]

The latter is my understanding. 

[Mistermann]

2 hours ago, Sarge55 said:

The latter is my understanding. 

Mine as well.  Love to see that somewhere official.  There's a debate amongst my flying buddies. 

[Rainmaker]

There is no auto-throttle. Does not exist at any stage of the -15. 

[Death Merchant]

1 hour ago, Rainmaker said:

There is no auto-throttle. Does not exist at any stage of the -15. 

How an I going to tanker without auto-throttle?

[Rainmaker]

32 minutes ago, Death Merchant said:

How an I going to tanker without auto-throttle?

(Cntrl + e) x 3

[Sarge55]

 

[Chipwich]

The A/P seems better after the update.  Anyone else notice?

[dporter22]

16 minutes ago, Chipwich said:

The A/P seems better after the update.  Anyone else notice?

Interesting. Nothing about the autopilot in the change log, but maybe fixes in other areas had some effect. 

[Chipwich]

Maybe the placebo effect, but it seems that I'm trimming less with Alt Hold and A/P engaged.  Perhaps I'm just more comfortable in the a/c.

[bolek]

I noticed Alt Hold or Alt Select does not work if the speed is above Mach 0.97.

[dporter22]

It's back to not working after the last update for me.

[Erazor]

I my experience Alt-Hold does not work if you are still in Takeoff Trim. Only after I trim the nose down a couple notches, it activates. 

[Bosun]

I'm echoing many here, in that it only works intermittently for me, and there's no set of conditions that I can reliably point to, mission to mission, that give me any predictability as to whether it will. 

If I'm flying at 24,000, and I want to set the AP for that alt, and I'm trimmed and flying it already, when I hit AP on and have alt selected, I expect the aircraft to darn well stay there. But it doesn't.  

It'll either slowly sink, slowly loft, or bobble.  

But rarely does it actually stabilize on the altitude that I've commanded it too.  This makes formation flying ridiculous. I can't imagine that the actual AP of the real plane was this finicky, was it? Who would have ever used it?

[dporter22]

Yep, it's broken. Hopefully they make it a priority to fix.

[Q3ark]

I have just done a two hour sight seeing flight on the Sinai map in the 15, used the auto pilot extensively and encountered no problems. I don’t know what could be effecting you guys but it would be worth doing a short flight to demonstrate the issues and posting a track replay.

[Holbeach]

My AP holds attitude, Altitude, Heading, and Steerpoints, from 80' to 30000' without problems and has done since day 1.

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[Chops]

On 8/11/2023 at 9:54 AM, Holbeach said:

My AP holds attitude, Altitude, Heading, and Steerpoints, from 80' to 30000' without problems and has done since day 1.

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Can you please post a short track of how you engage and use the autopilot?   I can't get Altitude Hold or Altitude Select to maintain altitude.

[Q3ark]

4 hours ago, Chops said:

Can you please post a short track of how you engage and use the autopilot?   I can't get Altitude Hold or Altitude Select to maintain altitude.

Check this video out from Casmo, it should tell you everything you need to know. 
 

 

[Holbeach]

F15 CBU 97 SA 10 3l.trk

7 hours ago, Chops said:

Can you please post a short track of how you engage and use the autopilot?   I can't get Altitude Hold or Altitude Select to maintain altitude.

You can watch the video, but for basic alt hold it's a 2 button press. Here's what I do.

Press A on keyboard or UFC AP button. This will give pitch hold and heading if you are below 7 deg bank. Then press UFC Alt hold. This will level to maintain current alt.

If over 7 deg, this will give Attitude hold.

I will post a track if you still have trouble.

Press button A at start, then alt hold, the NAV then, steering.

All subsequent alterations are button "A".F15 CBU 97 SA 10 3l.trk

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Edited August 24, 2023 by Holbeach