#625 Uncontrollable excessive left turn force at T/O and Landing with left wind.

[Anonymous]

Originally created by: h... (code.google.com)@hyde-tech.com

What steps will reproduce the problem?
1. Start yasim commercial plane such as 777-200ER, 747-400, 787 etc.
2. Set wind from left 45deg faster than 30knots.
3. Do take off or landing.

What is the expected output? What do you see instead?
There should be small left turn force but controllable by tiller.
Excessive left turn force appears when ship speed faster than 80knots.
Tiller can not control heading. No grip of ground at all and nose gear slipping cause out of runway.
This happens only on yasim plane. Not on jsbsim.
Right wind causes same force but it can be controllable but still excessive I feel though.

What FlightGear version (or GIT date)?
2.6.0 RC, 2.7.0

What operating system and graphics card?
Fedora16, 9500GT

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[Anonymous]

Originally posted by: gijsrooy

Are you talking about the Pakistan Airlines 747-400? My (KLM/Boeing) 744 is JSBSim...

Labels: YASIM

[Anonymous]

Originally posted by: h... (code.google.com)@hyde-tech.com

Yes, 747-400 labeled (YASim) in 747 directory.

[Anonymous]

Originally posted by: h... (code.google.com)@hyde-tech.com

No one is interested in this issue?
I really want to fix this. I can not rand even 5 knots left wind.
Could someone teach where should I investigate the cause?
This phenomenon happens only on left cross wind.
Since commercial jet plane should not have difference between left and right wind behaviour, this might come from reciprocal plane's cross wind effect.
Let me know where that cross wind effect calculation is done. Thanks in advance.

[Anonymous]

Originally posted by: aeitsch...@yahoo.de

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Mergedinto: 772
Status: Duplicate