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Calypso50

Auto-Pilot Questions

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>1-Generally for the Cessna aircraft things work well, with the>occasional zoom up on take-off with the 172 and the occasional>wandering back and forth across the runway like a drunk duck>with several aircraft..(not attributable to

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John,Thank for your detailed responses.In case you have nothing else to do but read more

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If you mean when taking off, at maybe 300'-400'. On approach- I hand fly until I have the ILS lined up, then engage the AP.Bill

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Bill,Another consideration, the last time my computer did weird things like this, and they happened mostly in Flight Simulator, I had a Trojan Horse virus aboard. May want to run a complete system scan.Best of luck,Bob

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bob,No viruses..I run Norton anti-virus scans every week, get all the up-dates. Keep Ad-ware updated and scan every week and use a firewall..Will also probably switch over to Firefox. Maybe even Thunderbird.But, just flew for a couple hours and no major problems...who knows why.. much more enjoyable...approaches as smooth as squid sashimi..BillPangaia Steel Band4 leads, 2 double tenors, 2 double seconds, 2 cellos, 2 bases, 1 drums, 1 conga, 1 percussion

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>The Felts Field 21>ILS in the real world comes in at an angle of about 5 degrees>to the right and is designed to keep you from plowing into the>hills to the north. FS2004 to my knowledge just shot every ILS>straight out the runway centerline though, I had to correct>the Felts AFCAD using AirNav data.Since all of the nav aids in FS are derived from the 1992 Jeppesen database, there are in fact offset localizers where they were in the Real World back when the data was current.I've encountered many offset localizers while flying around the FS world... ;)Bill

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Hi Bill,I've just spent a couple hours flying around, flying the same approaches as before and now they work much better, some perfectly..so there is something weird..Bob suggested, somewhere above or below, maybe a virus..nope.. I've got weekly Norton scans and updates, Weekly Ad-Aware scans and updates and a good firewall. anyway ... no poisonous(?) creatures sneaking around in there right now. And this week I'll switch to Firefox.Why doesn't MS update their Jeppesen databases?.. retorical questionThanks again, Bill

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Bill:A couple of things jump out at me right off. First of all regarding an aircraft's inability to turn once you engage the autopilot, my guess is that the ones that will turn have the following text in their aircraft.cfg files, and the one's that won't, don't!{autopilot}autopilot_available=1flight_director_available=1default_vertical_speed=1800.000000autothrottle_available=1autothrottle_arming_required=0autothrottle_takeoff_ga=0autothrottle_max_rpm=90.000000pitch_takeoff_ga=8.000000Use_No_Default_Pitch=1 <-------needs to be here in FS 2004Use_No_Default_Bank=1 <--------needs to be here in FS 2004default_pitch_mode=0If you do not see that text entry in the aircraft.cfg, add it. Use NOTEPAD and open the file, make the changes / additions, hit SAVE, close and reload the aircraft. It's a bug with the wing leveller function that somehow gets coded to stay on when you engage the AP, and will not click off when you deselect it on the MCP (Master Control Panel on the glareshield). I always check EVERY third party aircraft I download to make sure these text entries are present. You'll be amazed how many times it's missing!The other point is to make sure you're setting your altimeter for local conditions, especially if you're using real weather. Failing to do so may result in a discrepency between whats's indicated, or at least how high you THINK you are, and how high you really are, which may account for any unusual indications you're seeing on the glideslope during an otherwise stable approach. Lastly, much has been written in these forums about the proper way to intercept the glideslope, so I won't go there. Suffice it to say good planning and staying ahead of the aircraft in terms of proper (not too fast!) approach speed and aircraft configuration / trim is essential. Always intercept from below. On an ILS, I drop my gear at the outer marker, a convenient reminder warning! except in heavy snow or unstable (windshear) conditions. Hope Some of This helps,http://www.bwiairport.com/images/menu_BWIlogo.gifAlex ChristoffN562ZBaltimore, MD

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Thanks Alex, I did some preliminary checking last nite.I'm familiar with intercepting a LOC and GS.The 'altimeter tip' keeps coming on( occasionally like every 30 seconds,or sometimes when changing screens..then it will be ok for long periods...that's another weird issue though) It does come on during a long flight as conditions change and I hit the old B key to reset.I'll have a margaritta, dinner, then...I'll check each plane (I only have the default planes now) Only the Boengs have autothrottle, of course.You say to reload the aircraft after adding the code. How do I 'reload' the default aircraft? Just restart FS?Bill

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Alex,Ok...chapter 2.1- Baron, 737, 747, 777 did not have the code you suggested--Use_No_Default_Pitch=1 Use_No_Default_Bank=1default_pitch_mode=0And as you suggested, those planes would not turn with AP engaged. But wait, wait..In the past, they sometimes would turn, sometimes not, remember.2- I added the code to the Baron and 737--saved and restarted FS..Great, they turned. But...so did the 777 and 747 WITHOUT adding the code! I just reset the same flight with each plane.I restarted FS again to see what would happen. All planes turn w/wo the new code. (I also added-- default_bank_mode_0 --as it was in the other planes.========================Also for what it's worth.The 737, 747 and 777 code have --autothrottle_arming_required=1autothrottle_takeoff_ga=1instead of '0' as you suggested. ??Bill

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>Alex,snippage>And as you suggested, those planes would not turn with AP>engaged. But wait, wait..In the past, they sometimes would>turn, sometimes not, remember.snippage>>instead of '0' as you suggested. ??>>Bill>You are aware, are you not, that when you engage "Hdg" on the autopilot and then remove it (it only takes a split sec or so) the plane will turn normally? I used to modify all my planes but now I just hit heading and then turn it off; works for me.:D

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I didn't know about the HDG trick. I now have the extra code in all the conventional gear default planes. But when I get add-ons, if the same problem occurs I;ll try your suggestion first.Thanks,Bill

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Hey Bill,How well does FS runs on your system, do you ever get any stutters? And does the 2 GB or RAM make a lot of difference as opposed to 1? Infact, here are my system specs.P4 2.8 800 mhz FSB1 GIG DDR Ram (forgot what kind, I'm on leave right now)ATI X800 PRO 256 megs160 GIB IDE HDHow much of a difference does the serial drive make and what about the video card.To the moderators of this forum: I have no way of posting this question as a reply to Bill in the hardware forum, what action should I take?Jeff USAF

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Hi Jeff,Not being a computer whiz I can tell you this as for what I bought in october..Dell Computer-P4 550 3.4 GHz 800 FSB2GB dual channel DDR2 SDRAM 533MHz160 Gb Serial ATA hard driveNvidia 6800GTO (256 MB) I don't know the difference between a Serial Hard Drive and any other type.The video card works great. No stutters.. Very occasionally I can see FS 'drawing scenery' when I change views, best way I can describe it, but very rare.. and very fast.I did some research on video cards --The GTO seemed to be very highly rated ..then I bought the most of everything else I could afford.The 2GB memory makes a lot of difference.Hope that helps.Bill

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>Bill,>>Another consideration, the last time my computer did weird>things like this, and they happened mostly in Flight>Simulator, I had a Trojan Horse virus aboard. May want to run>a complete system scan.>>Best of luck,>BobHi Bob,Did you ever hear about "gremlins", harassing the aviation world? Might be you have got one on board.....Paddy.

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John, Looks like you're familiar with autopilot operation in FS, so I have a general question which I hope you can answer: When switching from Altitude Hold and Heading Hold for alignment with the localizer to Approach coupling when ON the GS, do you disconnect Altitude Hold or leave it connected? Seems this sometimes causes a problem with tracking the GS. Sometimes, if I disconnect AH, the AP will not hold GS. Thanks for your help. This has been bothering me for a while, and I have never solved the problem to my satisfaction.Dave Hinson

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John,When Approach is selected the Altitude hold should disconnect auromatically when the you intercept the GS.. Heading probably the same but I don't usually have heading hold on just before LOC intercept.Bill

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