SAAF JAS-39C Technical Data and Discussion

Wing position affects centre of lift…how can you say it does not matter?

Nah trust it doesnt matter because i think it doesnt (it suits my point really well if i just void it)

You didn’t really answer my question - I’m not expecting you to be an expert, I’m mainly asking for credentials because it’s important to know if you are “eyeballing” these conclusions or if you actually know what you are talking about. I’d love to learn, but I’m not about to go down an aerodynamics rabbit hole tonight for nothing.

A lot of these conclusions are also comparing 2 entirely different airframes?

If you wanna compare the Gripen to a similar airframe you have the Lavi
image

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By that point, its what, second or third plane hes comparing it to? First one just happens to be somewhat correct after applying 1,45 to it. So hes trying to find different one. We went from graphs made by company and nation not even touching gripen, to comparing it to viggen and now somehow, mirage.

I play war thunder

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Dont worry by the end of this i expect we will have compared gripen to Tornado and Harrier because theyre all jet aircraft

holy cow i hope that’s satire for christ sake

Its not really similar.

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Was there such a rumble when J-7E came into the game? Cuz gripen is pretty much new J-7E of top tier.

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There was a bit of one with the PL-5Bs but uh not to this extent. But hey, more modern jets, that more of us have grown up with and seen. Was always likely to be this way. And that I don’t have a problem with, shared passion it is.

Gripen airframe is really not that close to Mirage2000. If we are going to eyeball it that hard I can say that the Gripen’s wing and top of the fuselage look similar to the F-16 and am not surprised it can rate despite being a “delta.”

Speaking seriously, F-5 vs MiG-21 is basically a case study on TWR meaning jack for rate fights if there is a large enough gap in weight and aerodynamics. Even Soviet engineers IRL were flabbergasted when they got their hands on an F-5 and it completely clapped both the fishbeds and the floggers in tests, despite its pathetic thrust.

Gripen behaves similarly in-game to the F-5 in that regard. Hard data for all these later gen.4 aircraft is so unreliable that we’ll have to settle for the Gripen being more or less accurate as a high performance rat plane, like the F-5.

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It’s simple they both unstable. So centre of gravity is behind centre of lift. You don’t get more sustained deg/s by move centre of gravity more and more ahead of centre lift.

My source is I’m an professional amateur

Inflates G-Trousers

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@Firestarter
Gonna post some examples of 2 missile min fuel rates as of 0.25 rating in their slowest speed since that’s the fastest to test.
JAS-39C: 23.5dps.
Mirage 2k: 20dps.
F-16A MLU: 18.8dps.
JH-7A: 18.6dps.
F-16AJ: 19.8dps.
F-15J: 19.6dps.
Su-27: 16.7dps.
Mig-29 9.12: 19.5dps.
F-16C: 19.1dps.
F-14B: 19.9dps.
F-15A: 20.5dps.

cheers - i’ll follow up on this in a sec

theyre both light delta canards the primary difference is the gull intake and cranked delta of the Lavi but the lavi has a higher TWR, I dont think the gripen would have a magically significantly better rate, also the south african rate figures for what should be the same conditions are pretty well aligned
image

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This paper was debunked multiple times as absolute BS.

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oh? how so?

Lol they all over performing hard XD
Well WT and Gajin.