Simviation Forum - Pitch problems

Jun 18^th, 2005 at 9:14am

Rafiki Offline
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HELP ME!
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I just downloaded the ATA 727 anniversary package and i notice that when the plane turns it starts porpoising. Sometimes it will start in level flight. It only occurs when Autopilot is running however. Is it the Auto trim thing, and how do i turn it off? ???

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Reply #1 - Jun 25^th, 2005 at 3:47am

Calb Offline
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No, it's not auto-trim. In fact, the autopilot uses the trim to control the aircraft. If I recall, in the Aircraft.cfg file, there is a section called, Flight Tuning. In there is an item called trim effectiveness, or something similar. Try reducing that a little and see if your problem goes away.

Hope this helps.

Cal (CYXX)

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Reply #2 - Aug 13^th, 2005 at 11:27pm

rootbeer Offline
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Fernley, Nevada

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I have similar problems. I have to push forward very hard on the stick to keep the flying machine level, otherwise it will go into a severe upward attitude and the death stall is soon to come. I have tried trimming, but nothing works. Suggestions?

emachines T6212; AMD Athlon64 3800+ (2.40 GHz; Venice core); Allied AL-B500E 500W power supply; 2048Mb PC3200 DDR400; Westinghouse LCM-22w2 wide-screen LCD monitor; eVGA e-GeForce 7900 GS KO X16 PCIe video card; Logitech Extreme 3D Pro flight controller;&&Cyber Acoustics CA-4100 4-channel digital sound with 5 speakers; 300 Gb external hard drive in an enclosure; Windows XP Home; 3 Mb/s AT&T/Yahoo! DSL service; Microsoft Intellipoint trackball; Supergate EC-2000 multi-media keyboard. Epson CX-7800 Stylus all-in-one printer. Canon PowerShot S3 IS digital camera with 1 Gb SD card.&&Next thing: A CH Products USB 2.0 Flight Yoke (for enhanced realism).

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Reply #3 - Aug 14^th, 2005 at 3:04am

microlight Offline
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In 'flight tuning' there is a line for pitch stability, which is normally around 1.0. Try increasing this to 1.5 or 2 to see if the porpoising stops. If it doesn't then it may be a bigger issue with the flight dynamics - some that are supplied with freeware planes are better than others.

Wink

BAe ATP for FS9 now available! www.enigmasim.com

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Reply #4 - Aug 25^th, 2005 at 9:54pm

rootbeer Offline
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Fernley, Nevada

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Please direct me to "flight tuning."

emachines T6212; AMD Athlon64 3800+ (2.40 GHz; Venice core); Allied AL-B500E 500W power supply; 2048Mb PC3200 DDR400; Westinghouse LCM-22w2 wide-screen LCD monitor; eVGA e-GeForce 7900 GS KO X16 PCIe video card; Logitech Extreme 3D Pro flight controller;&&Cyber Acoustics CA-4100 4-channel digital sound with 5 speakers; 300 Gb external hard drive in an enclosure; Windows XP Home; 3 Mb/s AT&T/Yahoo! DSL service; Microsoft Intellipoint trackball; Supergate EC-2000 multi-media keyboard. Epson CX-7800 Stylus all-in-one printer. Canon PowerShot S3 IS digital camera with 1 Gb SD card.&&Next thing: A CH Products USB 2.0 Flight Yoke (for enhanced realism).

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Reply #5 - Aug 28^th, 2005 at 9:17am

microlight Offline
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Southern UK

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Open the aircraft.cfg (taking a backup first) using Notepad. Scroll down until you get to the 'flight tuning' section.

Wink

BAe ATP for FS9 now available! www.enigmasim.com

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Reply #6 - Sep 5^th, 2005 at 3:18pm

rootbeer Offline
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Fernley, Nevada

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And where do I find the aircraft configuration whatchamacallit? I warned all of you that I was a noooooob when I signed up here...

emachines T6212; AMD Athlon64 3800+ (2.40 GHz; Venice core); Allied AL-B500E 500W power supply; 2048Mb PC3200 DDR400; Westinghouse LCM-22w2 wide-screen LCD monitor; eVGA e-GeForce 7900 GS KO X16 PCIe video card; Logitech Extreme 3D Pro flight controller;&&Cyber Acoustics CA-4100 4-channel digital sound with 5 speakers; 300 Gb external hard drive in an enclosure; Windows XP Home; 3 Mb/s AT&T/Yahoo! DSL service; Microsoft Intellipoint trackball; Supergate EC-2000 multi-media keyboard. Epson CX-7800 Stylus all-in-one printer. Canon PowerShot S3 IS digital camera with 1 Gb SD card.&&Next thing: A CH Products USB 2.0 Flight Yoke (for enhanced realism).

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Reply #7 - Sep 5^th, 2005 at 5:22pm

papa-metro Offline
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Posts: 248

fs need not be running ... open fs2002, that's in , my computer, program files, microsoft games, FS 2002.

open required aircraft file (left click) you will see aircraft.cfg (in any aircraft you open.) right click it, box shows up, OPEN WITH, click NOTEPAD,
read down to flight tuning and make the adjustments if you want to. close the file , it will ask if you want to SAVE CHANGES it, click YES. gO FLY ....

another , easier, if all this is too much ... find a similar aircraft that flies just fine and open to the same cfg file in it. click COPY after right clicking aircraft.cfg. Go back to offending aircraft, or better, open it beside the new one and put the new cfg file in place of the old one, first SAVING the original to your desktop.
now the bad trim aircraft will use the new cfg file.

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Reply #8 - Sep 6^th, 2005 at 5:43am

papa-metro Offline
Colonel
I love YaBB 1G - SP1!

Posts: 248

Quote:

fs need not be running ... open fs2002, that's in , my computer, program files, microsoft games, FS 2002.

open required aircraft file (left click) you will see aircraft.cfg (in any aircraft you open.) right click it, box shows up, OPEN WITH, click NOTEPAD,
read down to flight tuning and make the adjustments if you want to. close the file , it will ask if you want to SAVE CHANGES it, click YES. gO FLY ....

another , easier, if all this is too much ... find a similar aircraft that flies just fine and open to the same cfg file in it. click COPY after right clicking aircraft.cfg. Go back to offending aircraft, or better, open it beside the new one and put the new cfg file in place of the old one, first SAVING the original to your desktop.
now the bad trim aircraft will use the new cfg file.

strike that part about transferring cfg file ... I meant to say AIR FILE. iF YOU DO THIS CHANGE THE NAME OF THE NEW AIR FILE TO EXACTLY THE NAME OF THE OLD, REPLACED ONE.

papa-metro usaf 1953-57

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