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Nose wheel touchdown

Featured Replies

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

this happens in the FFX model?

Gustavo Rodrigues - Brazil

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

Gustavo Rodrigues - Brazil

>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

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

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

>In V1.2 the auto-spoiler deployment is delayed until reaching>-0.25 deg of pitch, just as the nosegear is making contact.>>Regards>>Bob Scott>ATP IMEL Gulfstream II-III-IV-V L-300>Santiago de Chile>Great stuff, thanks Bob.Cheershttp://members.chello.nl/t.westnutt/realair.gif

>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.

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

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

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

  • 2 weeks later...

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!

Simon Holderness

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