Sign in to follow this  
Guest Pilot26EF

Error in Aircraft.cfg - and a Fix.

Recommended Posts

Last night, I was taxing around KPIE airport in Clearwater , Florida, a quite small airport for a B747, and I noticed a strange aircraft behavior issue. Of course, since the airport is so tight, I needed to use differential braking to be able to maneuver around the airport. When I applied RIGHT braking, the aircraft turned beautifully. However, when I tried to use LEFT braking, the aircraft came to a stop. After a few minutes of testing, I was sure something was not right, so I went to the aircraft.cfg file to see what was going on... Sure enough, I found an error. Here is what I saw:[contact_points]//point.0 = 1, -24.194, 0.000, -17.546, 1500.0, **0**, 1.932, 56.0, 1.45, 0.128, 0.780, 9.0, 12.0, 0, 270, 320point.1 = 1, -102.496, -16.009, -18.941, 1500.0, **1**, 1.932, 0.0, 1.54, 1.171, 0.880, 16.0, 21.0, 2, 270, 320point.2 = 1, -102.496, 16.009, -18.941, 1500.0, **2**, 1.932, 0.0, 1.54, 1.171, 0.880, 15.0, 20.0, 3, 270, 320point.3 = 1, -115.277, -4.253, -18.598, 1700.0, **1**, 1.932, 0.0, 1.50, 1.203, 0.820, 15.0, 18.0, 2, 270, 320point.4 = 1, -115.277, 4.253, -18.598, 1700.0, **1**, 1.932, 0.0, 1.50, 1.203, 0.820, 15.0, 18.0, 2, 270, 320//The numbers that I marked inside the astericks, are the refernce to weather that contact point should use 0 (regular, non-differential braking), 1 (left braking), or 2 (right braking) for its braking parameter. Notice in the copy from the original above, that the aircraft has 1 nose gear (0 as the brake type), and 4 main gears (the two inboard, and two outboard). However, as you can see from above, the aircraft is flagged as having 3 right brakes, and 1 left brake, and that obviously is not correct. It should be 2 left, and 2 right. The fix with the CORRECT numbers is below. My aircraft now taxis like it should =) Glad I found this. I am sure it was easy to overlook.[contact_points]//point.0 = 1, -24.194, 0.000, -17.546, 1500.0, 0, 1.932, 56.0, 1.45, 0.128, 0.780, 9.0, 12.0, 0, 270, 320point.1 = 1, -102.496, -16.009, -18.941, 1500.0, 1, 1.932, 0.0, 1.54, 1.171, 0.880, 16.0, 21.0, 2, 270, 320point.2 = 1, -102.496, 16.009, -18.941, 1500.0, 2, 1.932, 0.0, 1.54, 1.171, 0.880, 15.0, 20.0, 3, 270, 320point.3 = 1, -115.277, -4.253, -18.598, 1700.0, 1, 1.932, 0.0, 1.50, 1.203, 0.820, 15.0, 18.0, 2, 270, 320point.4 = 1, -115.277, 4.253, -18.598, 1700.0, 2, 1.932, 0.0, 1.50, 1.203, 0.820, 15.0, 18.0, 2, 270, 320//On a side note, after NUMEROUS complaints from my roomates and neighbors about the ability for them to hear "2,500", "Woot woot! Pull up!", and a few other specific sounds like the stick shaker, master warning, and other OVERLY loud volume files, from wherever they are in the neighborhood when I am flying, I have taken the liberty to reduce the volume levels of those certian files to a much more acceptable (Yet still loud enough) volume level. IF PMDG would give me permission, I can either send the files to them to be reviewed, and maybe released by them, or if they wish, to release myself with proper credit of course given. I know that many people would very much like the fix on those files, and I have my 747 sounding acceptably realistic now.That wraps it up for today. Please dont message me to send the sound files to you, or to post them. I will not do either without the express permission of PMDG.Thanks, Kevin.

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

After reviewing what I wrote, I think it may need to be corrected that (I think) it was supposed to read "3 LEFT brakes, and 1 Right brake"Three brakes applying at the same time would definitely be a reason that the aircraft would stop, and it would make since that with Nose/Body stearing, and only 1 right brake engaged, that the aircraft would turn unrealisitically easy to the right.Tried to edit the original, but didnt have time before edit period expired.

Share this post


Link to post
Share on other sites

thank you :) another thing i noticed, but im not sure where the reason lies... i sometimes have spikes on the rudder, only on the 744, if i use the rudder normally everything works. as soon as i center the rudder it shoots to one side. (in flight it doesn't give problems.. only on ground). Has anybody seen this?Luca

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this