Beechcraft KingAir 350

[jwocky]

@Simon: No, no cloak of invisibility, I am just so busy, I forget to look at the forum sometimes for days and then I run through all threads and try to work through what piled up.
And no, I don't think, that 50Hz would cause a gear specific problem. With lower Hz, you would always have a problem with how big is the delta between two loops. Which is maybe a problem for my Loreley at lets say 3000knots which moved the whole bird per second by 0.8 miles roughly, but not a KingAir and since the lower Hz would apply the same to damping as to bouncing back, the relation between them is still the same, at 50Hz and at 120Hz. So unless you are reliably hitting always the same pothole ... no, I don't think so.

[GabrielYV]

@IAHM-COL thank you very much friend

[IAHM-COL]

looks good!!

[bomber]

try these equation for your gear...

Code: Select all

   <ground_reactions>
        <contact type="BOGEY" name="nose">
            <location unit="FT">
                <x> -0.98 </x>
                <y> 0.0 </y>
            <z> -4.146 </z>  <!-- <z> -3.854 </z> -->
<!--         <z> -4.83 </z>   stall AoA -->
<!--         <z> -4.13 </z>   glide AoA -->
         </location>
         <static_friction>  0.80 </static_friction>
         <dynamic_friction> 0.50 </dynamic_friction>
            <rolling_friction> 0.02 </rolling_friction>
            <spring_coeff unit="LBS/FT"> 1010 </spring_coeff> <!--  weight * 0.65 -->
            <damping_coeff unit="LBS/FT/SEC"> 151.5 </damping_coeff> <!--  spring_coeff * 0.15 -->
            <damping_coeff_rebound unit="LBS/FT/SEC"> 15.15 </damping_coeff_rebound> <!--  damping_coeff * 0.1 -->
            <max_steer unit="DEG"> -2 </max_steer>
            <brake_group> NONE </brake_group>
            <retractable>0</retractable>
        </contact>

        <contact type="BOGEY" name="left_main">
           <location unit="FT">
                <x> 3.74 </x>
                <y> -3.28 </y>
                <z> -4.1 </z>
            </location>
         <static_friction>  1.0 </static_friction>
         <dynamic_friction> 0.50 </dynamic_friction>
            <rolling_friction> 0.02 </rolling_friction>
            <spring_coeff unit="LBS/FT"> 3265 </spring_coeff> <!--  weight * 2.1 -->
            <damping_coeff unit="LBS/FT/SEC"> 490 </damping_coeff> <!--  spring_coeff * 0.15 -->
            <damping_coeff_rebound unit="LBS/FT/SEC"> 49 </damping_coeff_rebound> <!--  damping_coeff * 0.1 -->
            <max_steer unit="DEG"> 0.0 </max_steer>
            <brake_group> LEFT </brake_group>
            <retractable>0</retractable>
        </contact>

        <contact type="BOGEY" name="right_main">
           <location unit="FT">
                <x> 3.74 </x>
                <y> 3.28 </y>
                <z> -4.1 </z>
            </location>
         <static_friction>  1.0 </static_friction>
         <dynamic_friction> 0.50 </dynamic_friction>
            <rolling_friction> 0.02 </rolling_friction>
            <spring_coeff unit="LBS/FT"> 3265 </spring_coeff> <!--  weight * 2.1 -->
            <damping_coeff unit="LBS/FT/SEC"> 490 </damping_coeff> <!--  spring_coeff * 0.15 -->
            <damping_coeff_rebound unit="LBS/FT/SEC"> 49 </damping_coeff_rebound> <!--  damping_coeff * 0.1 -->
            <max_steer unit="DEG"> 0.0 </max_steer>
            <brake_group> RIGHT </brake_group>
            <retractable>0</retractable>
        </contact>

[Octal450]

Well, The 350 becomes the very first GA aircraft to use IT-AUTOFLIGHT.

Here it is holding 2000ft, 140ias, and hdg 300.


Please test.

Josh

[IAHM-COL]

try these equation for your gear...

Code: Select all

   <ground_reactions>
***


Hi Bomber.
Thanks.

I pushed this code:
https://github.com/IAHM-COL/KingAir-350/commit/98074f18b9038d76d839b178c6c5b53374ca4ad0

@D-ECHO

Do you mind testing if the issue we were having while taxiing is improved with the new Gear contacts code?

IH-COL

[IAHM-COL]

@it0uchpods

Thanks.
Looking forward to run a test on the gears code and the new IT-Autoflight Systems on this babe

@Side:
Want to go for an Orca test and report?

IH-COL

[IAHM-COL]

@bomber

Code: Select all

 <retractable>0</retractable>

Should this be

Code: Select all

 <retractable>1</retractable>

For all three bogeys?

[bomber]

Hold on that wasn't just to be added in wholesale...

It was all about the ratios...

So weight of plane x 0.65.... and so on.

This is for the nose

<spring_coeff unit="LBS/FT"> 1010 </spring_coeff> <!-- weight * 0.65 -->
<damping_coeff unit="LBS/FT/SEC"> 151.5 </damping_coeff> <!-- spring_coeff * 0.15 -->
<damping_coeff_rebound unit="LBS/FT/SEC"> 15.15 </damping_coeff_rebound> <!-- damping_coeff * 0.1 -->

Main gear is different.

<spring_coeff unit="LBS/FT"> 3265 </spring_coeff> <!-- weight * 2.1 -->
<damping_coeff unit="LBS/FT/SEC"> 490 </damping_coeff> <!-- spring_coeff * 0.15 -->
<damping_coeff_rebound unit="LBS/FT/SEC"> 49 </damping_coeff_rebound> <!-- damping_coeff * 0.1 -->


But I don't know the weight of your plane, so I'm leaving it for those that do to do the calculation. ..

This should provide a nice gear action for all tricycle planes ( I hope )

[IAHM-COL]

Hold on that wasn't just to be added in wholesale...

https://github.com/IAHM-COL/KingAir-350/tree/Gears-test
OK
I isolated this on a branch Gears-test for testing and refinement only.