Autopilot induced oscillation

FSX including FSX Steam version.

Autopilot induced oscillation

Postby pilotjj1 » Fri May 16, 2008 9:24 pm

Don't know if you guys encountering this problem.... it is with a fresh install of fsx with acceleration.

Whenever i hold altitude with the autopilot and run the sim at 16 x acceleration. the plane (default ones, all of them) start to oscillate up and down, up to +/-1000ft.

This does not occur at lower time acceleration, neither does it occur at low altitude (it starts at ard FL200). I do not have addons for FS, so i do not know if they are affected. This is also not a problem before i installed the acceleration pack.
pilotjj1
2nd Lieutenant
2nd Lieutenant
 
Posts: 115
Joined: Sun Feb 03, 2002 3:58 am
Location: Singapore

Re: Autopilot induced oscillation

Postby garymbuska » Fri May 16, 2008 10:08 pm

Don't know if you guys encountering this problem.... it is with a fresh install of fsx with acceleration.

Whenever i hold altitude with the autopilot and run the sim at 16 x acceleration. the plane (default ones, all of them) start to oscillate up and down, up to +/-1000ft.

This does not occur at lower time acceleration, neither does it occur at low altitude (it starts at ard FL200). I do not have addons for FS, so i do not know if they are affected. This is also not a problem before i installed the acceleration pack.

My question is why in gods earth are you running at 16 x for ???
I am surprised that is all that happens. Nothing in FSX was designed to run at that speed. Good grief man slow down  8-)
Gary M Buska
SYSTEM Specs ASUS P8Z68 V/GEN 3 mother board: INTELL I7 2600k 3.48 ghz Quad core CPU with Sandy bridge: 12 Gigs of 1800hz ram:
GTX 950 OVER CLOCKED: 2 Gigs Ram Windows 10 Home 64 bit Operating system. 750W Dedicated modular power supply. Two Internal 1TB hard drives 1 External 1TB 3.2 USB hard drive. SAITEK Cessna flight Yoke with throttles.
CH Rudder Peddles 27 inch Wide screen Monitor
User avatar
garymbuska
Major
Major
 
Posts: 4415
Joined: Tue Dec 30, 2003 11:10 am
Location: Jacksonville, Florida

Re: Autopilot induced oscillation

Postby DaveSims » Fri May 16, 2008 10:10 pm

In previous versions of FS, it wouldn't allow you run any more than 4x with the autopilot on.  Maybe thats why they had the limit.  
User avatar
DaveSims
Major
Major
 
Posts: 2350
Joined: Sat Mar 02, 2002 2:59 am
Location: Clear Lake, Iowa

Re: Autopilot induced oscillation

Postby BFMF » Fri May 16, 2008 11:10 pm

16x time acceleration....!? :o


good grief...



Might I suggest finding a cockpit video of some sort and fast forward through that instead.... ;D
Last edited by BFMF on Fri May 16, 2008 11:13 pm, edited 1 time in total.
BFMF
Colonel
Colonel
 
Posts: 16266
Joined: Mon Feb 25, 2002 6:06 pm
Location: Pacific Northwest

Re: Autopilot induced oscillation

Postby pilotjj1 » Sat May 17, 2008 10:18 am

Emm.... So I guess you hand fly your 747 from Los Angeles to Sydney on real time?
pilotjj1
2nd Lieutenant
2nd Lieutenant
 
Posts: 115
Joined: Sun Feb 03, 2002 3:58 am
Location: Singapore

Re: Autopilot induced oscillation

Postby BFMF » Sat May 17, 2008 10:50 am

I always fly in real time, at or very near my computer

In fact, just a couple weeks ago I flew from Spokane, Wa to Orlando Florida in a DC-4. The flight lasted 11.6 hours, and was done in real time, sitting at my computer, navigating with Maps, compass, and my nav radios. Never once did I need to look at the GPS.... ;D
Last edited by BFMF on Sat May 17, 2008 10:57 am, edited 1 time in total.
BFMF
Colonel
Colonel
 
Posts: 16266
Joined: Mon Feb 25, 2002 6:06 pm
Location: Pacific Northwest

Re: Autopilot induced oscillation

Postby Brett_Henderson » Sat May 17, 2008 11:16 am

That's incredible
Last edited by Brett_Henderson on Sat May 17, 2008 11:18 am, edited 1 time in total.
Brett_Henderson
Major
Major
 
Posts: 3403
Joined: Fri Oct 08, 2004 7:09 am

Re: Autopilot induced oscillation

Postby BFMF » Sat May 17, 2008 11:47 am

I sure used a lot of sectional charts though....lol

But I didn't think the fuel was going to last that long. I was originally going to fly down to Boise, but when I got there decided to go down to Salt lake City. When I got there I decided to continue on down through Colorado, and down into Texas. I still had more fuel than I had expected, so I followed the coast and ended up in Orlando...lol
BFMF
Colonel
Colonel
 
Posts: 16266
Joined: Mon Feb 25, 2002 6:06 pm
Location: Pacific Northwest

Re: Autopilot induced oscillation

Postby Brett_Henderson » Sat May 17, 2008 12:19 pm

In FS9..
Brett_Henderson
Major
Major
 
Posts: 3403
Joined: Fri Oct 08, 2004 7:09 am

Re: Autopilot induced oscillation

Postby BFMF » Sat May 17, 2008 12:30 pm

Back in the days of FS2002, I flew a B-17 from San Francisco to Pearl Harbour. I didn't use the FSX Map, nor the GPS. It took nearly 14 hours. Talk about a stressfull flight, knowing that if you're off by a few degrees, or if the winds were different than forcasted, you could miss the islands alltogather. As for fuel, I flew with the engine power far back as possible with the fuel leaned and RPM's as back as I could, and ended up landing with only 20 or so gallons of fuel in each wing :o
Last edited by BFMF on Sat May 17, 2008 12:32 pm, edited 1 time in total.
BFMF
Colonel
Colonel
 
Posts: 16266
Joined: Mon Feb 25, 2002 6:06 pm
Location: Pacific Northwest


Return to Flight Simulator X (FSX) and Steam

Who is online

Users browsing this forum: No registered users and 678 guests