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Guest Tim W

Nose wheel touchdown

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I am still having a problem with the nosewheel wanting to bury itself in the runway, no matter how hard I try to hold it off, there comes a point when it drops like a brick! I know it was worse in version 1 but it's still there albeit not quite as bad.Cheershttp://members.chello.nl/t.westnutt/realair.gif

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AFAIK, This is caused by wing folding.Terry Gaff's model uses wing fold to command the ground spoilers animation.regards

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>AFAIK, This is caused by wing folding.>>Terry Gaff's model uses wing fold to command the ground>spoilers animation.>>regardsOh I see, yes it does seem to coincide with the spoiler deploying. Maybe I should not use auto deploy and just deploy manually when the nose is on the ground until it's perhaps fixed.Thanks for the info.Cheershttp://members.chello.nl/t.westnutt/realair.gif

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In V1.2 the auto-spoiler deployment is delayed until reaching -0.25 deg of pitch, just as the nosegear is making contact.RegardsBob ScottATP IMEL Gulfstream II-III-IV-V L-300Santiago de Chile

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>In V1.2 the auto-spoiler deployment is delayed until reaching>-0.25 deg of pitch, just as the nosegear is making contact.that's gmax model, right? may i sugguest that using xml conditions to trigger the ground spoilers animation in TM models? i have some stupid xml conditions used with my own panel mods which detect the aircraft is on ground and deploy the spoilers. you know the default autobrake & autospoilers work not pretty well with some models and conditions like cross wind landing or hard landings that your aircraft was bounced back into air uppon touchdown. my panel mods help to eliminate this. may be you can modify them abit so that you can use them to deloy the ground spoilers instead of using the wing fold command.you can drop me a mail anytime if you are interested in my codes.

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However, buried or not being fixed, the nose wheel still wobbles back and forth when static or moving forward at no more than 10kts.

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Are you using v1.1? I fixed that problem in v1.1 by disabling yaw damper output while on the ground. The YD was making inputs to the rudder that were translating through to the nosewheel.OTOH, if you have a noisy rudder axis pot, that could be the cause as well.Bob ScottATP IMEL Gulfstream II-III-IV-V L-300Santiago de Chile

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Just out of interest's sake, the from the manual:During landing, the auto speed brake system operates when these conditions occur:- Speed brake lever is in the ARMED position- SPEED BRAKE ARMED light is illuminated- both thrust levers are retarded to IDLE- main landing gear wheels spin up (more than 60kts) - SPEED BRAKE lever automatically moves to the UP position, and the flight spoilers deploy- right main landing gear strut compresses on touchdown, causing the mechanical linkage to open the ground spoiler interlock valve, and the ground spoilers deployIf a wheel spin-up signal is not detected when the air/ground system senses ground mode (right MLG strut compressed), the SPEED BRAKE lever moves to the UP position, and all spoiler panels deploy automatically.A failure in the automatic functions of the speed brakes is indicated by the illumination of the SPEED BRAKE DO NOT ARM light. In the event the automatic system is inoperative, the SPEED BRAKE lever must be moved manually to the UP position.And, practically speaking, if you do not make a conscious effort to 'land' the nosewheel, it can slam down a little hard at certain weights/loadings. Conversely, sometimes it can float along with the nose in the air, risking poking a reverser bucket into the runway!

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