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IL-2 Sturmovik The famous combat flight simulator.

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Old 03-05-2010, 07:22 AM
Flanker35M Flanker35M is offline
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S!

Interesting this G-factor. Are the G-limits differentiated in planes? For example Fw190 had stronger wings in later versions etc. And for me when looking at the video..the bombrack would break before the plane would. A 500kg bomb would rip itself from the hooks.

Another interesting thing is this g-limit lowering. Modern planes have strain gages measuring the level of strain on critical components of the plane. These planes pull over-G etc. but their G-limit does not drop because of this. It takes some time to build fractures and cracks etc. that would hamper the plane. The over-G causing critical failure would need to be very sharp.

But nevertheless, a very interesting feature. I really am interested in this and how it is implemented. Will there be documentation of this with patch release?
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Old 03-05-2010, 07:32 AM
mkubani mkubani is offline
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Flanker, as written in the description, each plane will have its specific G-limit defined.

There will be a very similar and detail guide in PDF as with the 4.09 patch.
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Old 03-05-2010, 07:36 AM
Flanker35M Flanker35M is offline
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S!

Thanks mkubani Must have missed it in all excitement Why I am interested in this G-limit is because of my work with military jets. We do follow the G-limits, strain etc. so some grasp on it
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Old 03-05-2010, 09:00 AM
Skoshi Tiger Skoshi Tiger is offline
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Quote:
Originally Posted by Flanker35M View Post
S!

Interesting this G-factor. Are the G-limits differentiated in planes? For example Fw190 had stronger wings in later versions etc. And for me when looking at the video..the bombrack would break before the plane would. A 500kg bomb would rip itself from the hooks.

Another interesting thing is this g-limit lowering. Modern planes have strain gages measuring the level of strain on critical components of the plane. These planes pull over-G etc. but their G-limit does not drop because of this. It takes some time to build fractures and cracks etc. that would hamper the plane. The over-G causing critical failure would need to be very sharp.

But nevertheless, a very interesting feature. I really am interested in this and how it is implemented. Will there be documentation of this with patch release?
This is purely from a laymans perspective, and I don't claim to have any engineering knowledge, but couldn't over-stessing an airframe lead to things like elongate bolt holes and deforming bolts, rivets and assorted fasteners at the various stress points? This sort of damage may not cause the wing to fail at that point but would lower the g-limit for the wing?

Like I said I don't claim to be an expert.


Cheers!
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Old 03-05-2010, 09:24 AM
daidalos.team daidalos.team is offline
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FVV190, feel free to translate it. No plans for the super corsair.
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Old 03-05-2010, 09:49 AM
FVV190 FVV190 is offline
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Thanks
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Old 03-05-2010, 09:57 AM
Flanker35M Flanker35M is offline
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S!

That is what happens. rivets loosen, bolts shear or their holes wear, structure like spars and so forth get "tired" of the stress and generate cracks in them. The cracks and damage are more likely if the airframe is stressed a lot already and older if comparing toa totally new one. for example Bf109 had structure life calculated to about 400 hours if flown within limits. This of course did shorten due damage and strain.

I read about Finns losing 2 Bf109's to structural failure in combat. One was in a speed exceeding 900km/h when the wooden tail broke off and plane crashed to ground. Pilot was KIA. The other was a Bf109 losing it's wing in a tight turn due the bolt keeping wing attached failed and broke. Pilot KIA. There are some text about the plane surface buckling or similar after hard turns and older airframes feel "mushier" than new ones. So strain has degrading effect on the plane.

As said, implementing G-factor to IL-2 is very interesting thing Waiting for it very much.
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Old 03-05-2010, 10:22 AM
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FC99 FC99 is offline
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Just a few remarks about new G_Limits

1. Few RL data for USA planes, I think that nobody can argue that these were not well made and engineered.
F4U



P51D


P-47N


As you can see RL limitations are tight, pilot have to use his head too during piloting, not a muscles only. This might explain you why some of the pilots in guncam videos don't do things you see from virtual pilots.

2. G_Limits are not fixed, if plane is in 8/12 category that doesn't mean that it will get damaged every time you exceed 8G or that it will broke when 12G's are exceeded. If you are lucky you can pull 13G's and get away with it but everything above 8G is lottery. If you are carrying bombs limits are much tighter and you should be very careful in maneuvers.

3. Don't expect this to be 100% accurate in every way, that's not possible to achieve in PC simulation with 200+ planes. Some generalizations are necessary but our opinion is that this feature is big step forward in making the sim more realistic.

4. Readout in yellow will not be part of the game, that's just for demo purpose, just in case if somebody expected to see this during playing.

FC

FC
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Old 03-05-2010, 11:31 AM
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ZaltysZ ZaltysZ is offline
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This "fix" can have very strong effect on how people fly. No more high speed last moment pullouts, no more bombers acting like fighters and lots of complaints from people who are used to yank the stick all over the place.

---

Maybe dynamic CoG is planned in the future?
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Old 03-06-2010, 01:19 PM
Ernst Ernst is offline
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I believe this ll be a major issue to spitfire with good elevator autority at high speeds. Most planes enter acellerated stall or not deflect the elevators before maximun g-loadings, its really hard to go beyond its limits. Second p-51 picture shows that.
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