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Cessna 172 damage

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Cessna 172 damage

Postby fredsie » Wed Oct 10, 2018 10:05 am

Hi all

Just come back to FG after a long time away. I'm really impressed by how much it's moved on. A quick question though about touchdown damage. I'm no expert but it seems to me that it's way too easy to damage a strut or wheel when landing. Even a slight variation on level/pitch seems to invoke disaster. A friend of mine who trained in a 172 reckons he's made much harder landings than I'm doing without mishap. So, is the general feeling that the damage trigger settings are realistic? And is there any way i can tweak the sensitivity?

Cheers

Fred
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Re: Cessna 172 damage

Postby dany93 » Wed Oct 10, 2018 3:10 pm

Hi Fred,

c172p/Systems/c172p-damage.xml

lines 79 - 142.

These lines.
Conditions: greater than max compression AND max force.

Code: Select all
            <test logic="AND" value="1">
                damage/force-nose-gear GT 1500.0
                gear/unit[0]/compression-ft GT 0.3
            </test>

Code: Select all
            <!-- [1] used to guess required force -->
            <test logic="AND" value="1">
                damage/force-left-gear GT 6500.0
                gear/unit[1]/compression-ft GT 0.8
            </test>

            <!-- Side force on left gear -->
            <test logic="AND" value="1">
                forces/fby-gear-lbs GT 1500.0
                gear/unit[1]/compression-ft GT 0.23
            </test>

Code: Select all
            <!-- [1] used to guess required force -->
            <test logic="AND" value="1">
                damage/force-right-gear GT 6500.0
                gear/unit[2]/compression-ft GT 0.8
            </test>

            <!-- Side force on right gear -->
            <test logic="AND" value="1">
                forces/fby-gear-lbs LT -1500.0
                gear/unit[2]/compression-ft GT 0.23
            </test>

Dany
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Re: Cessna 172 damage

Postby wlbragg » Wed Oct 10, 2018 4:42 pm

Hi Fred,

If you come up with some good numbers please report back here or on the development platform. We have an open issue for this as we also feel the damage needs to be tweaked. If you have any data to support your numbers and finding, so much the better.
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Re: Cessna 172 damage

Postby fredsie » Wed Oct 10, 2018 4:44 pm

Excellent Dany, just what I was looking for. I didn't want to turn off damage completely, so these parameters are perfect.

Yes, wlbragg, I'll have a run through different values and post the results.
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Location: Liverpool, UK
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