J-20 5th Generation Fighter VII

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latenlazy

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but you do understand, computer made of 0 and 1 ticked in discrete clock right? so for any simulation it's going to be polygons anyway, just how many polygons they are. what i was saying is that, as long as they can hold the polygons resolution asame on three aircraft, the simulation comparision is valid


that's why i use the golf ball as a figure of speach before, can you distiguish between these three 'golf balls'? are they represent their characteristics in same polygons resolution? if they are, why not?

“If the thing you’re trying to measure with a model is the noise floor a noisy model won’t tell you what you are trying to look for, even relatively between three objects that are being observed by the same model.”
 

Blitzo

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that's not what latenlazy was argue about, I was saying, given how the model is like, may be 'the method has flews and the missing in some deteails' but if this hold the same for all three aircrafs (F-35 and Su-57), than the model is meaningful, it will give us a realitive idea on how each aircraft is comparing with each other, in terms of how accurate they are, that's a judgmental call.

How do you know that the models of the three different aircraft give us a realistic appraisal of their relative RCS management?

Putting it another way, why do you think the models are all "equally inaccurate" from their respective real world counterparts?


Wouldn't it be most accurate for us to say "we have no idea how accurate each model is to their real world counterpart, and thus we do not know if the relative performance of the models is comparable to the relative performance of the real world aircraft"?
 

stannislas

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“If the thing you’re trying to measure with a model is the noise floor a noisy model won’t tell you what you are trying to look for, even relatively between three objects that are being observed by the same model.”
lol, whatever, for you the only thing matters to you is some sharp reflection from certain unsecure scews, right? if in that case, don't look at any models, or any news in public domain, nothing will give the level of details on that.
 
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stannislas

Junior Member
Registered Member
How do you know that the models of the three different aircraft give us a realistic appraisal of their relative RCS management?

Putting it another way, why do you think the models are all "equally inaccurate" from their respective real world counterparts?
I don't, that's why I was keep saying 'if, if, if'

Wouldn't it be most accurate for us to say "we have no idea how accurate each model is to their real world counterpart, and thus we do not know if the relative performance of the models is comparable to the relative performance of the real world aircraft"?
yes, that's why i was saying before
you can take it further as, ok, F-35 probabaly has the best craftsmanship, so RCS would more close to this number, J-20 may be slight worse, so give a let's say 5% penaty, Su-57 has a visiable fan blade and tones of uneven screws, let's penalize it even more. Despite this would eveantually become a judgemental call, but at least give us a base line on how to evaluate the case, and this the value or the truth of this work.
 

latenlazy

Brigadier
lol, whatever, for you the only thing matters to you is some sharp reflection from certain unsecure scews, right? if in that case, don't look at any models, or any news in public domain, nothing will give the level of details on that.
You are literally trying to point to a faceted shape as if it’s representative of a shape with continuous curvature…
 
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