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Bush planes

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Re: Bush planes

Postby wlbragg » Sun Apr 19, 2015 11:55 pm

Looking for something like this?

Exactly, that would be perfect.

Philosopher's URL code is correct. Mouse over the URL button and it shows you the correct syntax.
Kansas(2-27-15)/Ohio/Midwest scenery development.
KEQA (2-27-15), 3AU, KRCP Airport Layout
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Re: Bush planes

Postby MountainFlyerN22 » Mon Apr 20, 2015 5:49 pm

Thanks for the ULR help. :)
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Re: Bush planes

Postby MountainFlyerN22 » Tue Apr 21, 2015 7:58 pm

Updated the Cessna 170 file,Fixed the livery thanks to Martien van der P.
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Re: Bush planes

Postby MountainFlyerN22 » Fri May 01, 2015 1:48 am

Added a livery. (not necessarily to a bush plane,But I wanted to share it.)
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Re: Bush planes

Postby MountainFlyerN22 » Wed May 13, 2015 4:20 pm

Haven't been doing much recently,but I did get some skis for the J-3.
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Re: Bush planes

Postby Lydiot » Sun Jun 07, 2015 4:42 am

MountainFlyerN22 wrote in Fri Apr 17, 2015 8:18 pm:I appreciate the feedback.
So that I can try and improve them.


I'll try and keep the list updated.

Clear skies to all,
-N22


Awesome work - and thanks for your time and contribution!!!

I have one question though since I recently started playing around with these types of planes, after seeing some videos of the Cub landing on hillsides and pretty much everywhere, and I started trying to do that. It's a ton of fun. BUT - question:

When landing on non-runways or adjacent soil, on some soil the wheels get "stuck" even though the plane doesn't break and the wheels of the cub are 'huge'. Is this an issue with land classes or something that can be changed in your models?

Basically I flew around in Grand Canyon and landed pretty well on a somewhat steep hillside, but then was stuck and couldn't take off. So I then tested the same plane at airports, and if I taxi off the runway/taxiway, onto nearby soil, it's fine - until the soil changes at which point the wheels seem like they're in glue.

Any thoughts on this?
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Re: Bush planes

Postby someguy » Sun Jun 07, 2015 5:25 am

The rolling friction value for each terrain type is hard coded into each landclass. If you have a text editor with search and replace across multiple files using wildcards, it's easy enough to make everything behave like pavement by changing the values to 0.1. If that's what you really want.
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Re: Bush planes

Postby Lydiot » Sun Jun 07, 2015 6:23 am

someguy wrote in Sun Jun 07, 2015 5:25 am:The rolling friction value for each terrain type is hard coded into each landclass. If you have a text editor with search and replace across multiple files using wildcards, it's easy enough to make everything behave like pavement by changing the values to 0.1. If that's what you really want.


Ok, so I'd look for "rolling friction"?

It's not really that I want everything to be like asphalt, but surely you agree that this particular plane has certain characteristics that makes it behaved differently from, say, an F-16, when it comes to how it "rolls" over different types of surfaces, right? So it seems "too bad" that we're missing out on being able to do cool things with this plane considering what it is.

Or, looking at it in another way: While it's not realistic for a mountain side or sandy surface to act like asphalt, the only planes one would bother trying to land on such a surface in the first place would probably be the planes made for it, i.e. the Cub and a handful others. I would bother trying to land a jet on a mountain side for example.
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Re: Bush planes

Postby MountainFlyerN22 » Sun Jun 07, 2015 3:01 pm

Awesome work - and thanks for your time and contribution!!!

Thanks! :D I'm glad you enjoy them.

Due to the fact that the Cub is Yasim, means it reads what kind of ground its on.So there is really no way to change the way it rolls without changing the ground act like pavement.

Jsbsim dosen't care what the ground is,it will even roll on water.

This fact of Yasim plane getting stuck in grass has come up often when discussing Bush planes. It no fun landing off-airport just to get stuck. :|
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Re: Bush planes

Postby LesterBoffo » Sun Jun 07, 2015 3:19 pm

Actually I've discovered, and I don't recall when it was implemented but.. JSBsim now has terrain roughness friction factor sampling for FG land classes, maybe since 3.2 or earlier. I've tested a few different planes I have with JSBsim FDM's and they're now bumping and slowing down when in crop grass or scrub.
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Re: Bush planes

Postby Gijs » Sun Jun 07, 2015 3:38 pm

Since February 2014 (version 3.1), see http://wiki.flightgear.org/Aircraft_mai ... _reactions ;-)
Airports: EHAM, EHLE, KSFO
Aircraft: 747-400
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Re: Bush planes

Postby MountainFlyerN22 » Sun Jun 07, 2015 4:09 pm

Hope that doesn't cause the all the Bush-planes to get bogged everywhere. :wink:
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Re: Bush planes

Postby MountainFlyerN22 » Mon Aug 31, 2015 1:31 am

Update.

This weekend I got annoyed with the Kodiak's FDM,so I fixed it. :D
Just can't make it sit flat. Changing the front gear position didn't work.

Download link on first post of thread.

Image
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Re: Bush planes

Postby wlbragg » Mon Aug 31, 2015 7:09 pm

Warning, I know next to nothing about YSIM but,

Changing the front gear position didn't work

Your referring to the gear entries in kodiak.set?

I imported the model into Blender and the 0 point is the tip of the prop with the plane being to the x positive of that.

There are possible COG issues and from what I understand, it doesn't look like the gear settings in kodiak.set are correct based on what blender is reporting.

Here is what Blender reported for the center of the tires.

front
x=1.25018
y=-0.00531
z=-1.53398

left
x=4.56911
y=-1.63258
z=-1.29215

right
x=4.56912
y=1.59359
z=-1.29215

Maybe this will help or someone more familiar with YSIM can provide some help.
Kansas(2-27-15)/Ohio/Midwest scenery development.
KEQA (2-27-15), 3AU, KRCP Airport Layout
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Re: Bush planes

Postby MountainFlyerN22 » Tue Sep 01, 2015 12:56 am

I'll try looking in the kodiak-set.xml. I was looking in the kodiak.xml file which is the Yasim file,didn't think too look anywhere else. :oops:
Thanks for the pointer.
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