Flight model comparation - BMS F16 Falcon DCS F16 Viper
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@A.S:
what is a typical “yes, exactly that” case for me … is 4:18 - from personal fighting experience… the dynamic “egg” of BMS (load and radius change) and the “constant pull” (radius and rate “pressure” - if that makes sense) … i looked multiple times in slow motion at that turn… the telemetry is very very much similar… from initiation to finish… however… you can see the different cirlce shapes… what is surprising… familiar from combat in-game, but strange to see it like that… not sure what causes it… the athmosphere modelling or what… it is that feeling, that in DCS you constantly are “pulling” and pressuring the bandit… close… closer… yet in BMS it is much more about timing load-factor and the expanding and collapsing radius… at least in my simple words, or observation… pull at all times same way (hard)… leads you to nowhere in bms… it works in dcs to kill someone.
the telemetry values in that turn divert minimal throughout all measurements taken….however… graphically, the radiuses drawn are totally different in “shape”.
those things instantly jump into my eyes… because i can identify the combat differences (and confirm it) between bms and dcs just by looking at THAT …i can not explain it though. i have a guess, but not with certainty.
maybe Mav-Jp can review the same …Wind is your answer
make the same video with null wind at all altitudes and you will see a circle with a constant pull
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and btw the FM is totally different
look at the 360 deg max G turn
DCS degrades much lower than BMS
not to mention of course the accel capabilities….
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and btw the FM is totally different
look at the 360 deg max G turn
DCS degrades much lower than BMS
not to mention of course the accel capabilities….
Revi screw the test up.
Different pylons in each sim. Different drag indexes and so on.
That perfect circle in DCS not realistic at all. BMS still rules the game
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Hi,
It’s not about wind, this is an oval distortion of the proportions in the longitude of the world in Tacview when you load BMS track.
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@SCX:
Hi,
It’s not about wind, this is an oval distortion of the proportions in the longitude of the world in Tacview when you load BMS track.
Could be. I don’t know if it is true or not but it is relevant. However … please explain why projection (distance) it change in time (see what I mean?).
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What do you mean?
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@SCX:
What do you mean?
If the longitude is distorted … why the “circle” is more distorted at the end of the 360° than at the beginning => an elliptic trajectory, I would understand, but why a spiral trajectory?
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If the longitude is distorted … why the “circle” is more distorted at the end of the 360° than at the beginning => an elliptic trajectory, I would understand, but why a spiral trajectory?
Because there is wind as well
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What i’m saying is that for some reason it seems to me that Tacview shows some distortion in the longitude axis for BMS, so the image is not in the correct aspect ratio.
Here i fixed the ratio in Photoshop
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Ah ok. But I am rather talking about about that:
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You can see the ratio problem also in the Tacview backround:
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That’s the nature of turning hard, the radius getting smaller
Like here:
https://tonyrogers.com/news/images/0104viper5.jpg -
@SCX:
That’s the nature of turning hard, the radius getting smaller
Like here:
https://tonyrogers.com/news/images/0104viper5.jpgNot if you keep the same TAS/G/roll angle … and unless I am missing something, it was the purpose of the test in the video (max sustained turn rate at sustained airspeed).
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Ah ok. But I am rather talking about about that:
windo comign from south most likely
continue circling and you will see like a sailplane trajectory while in spiral
on top of that, the G building time at the start makes the first turn not really circular anyway
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windo comign from south most likely
continue circling and you will see like a sailplane trajectory while in spiral
Yep. Agree.
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Yes, off course, if you’ll continue at the same speed/G/Roll etc…it will be the same circle, but at the start of the pull it’s still not sustained.
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@SCX:
but at the start of the pull it’s still not sustained.
… so we have part of the answer. (I am not able to read the telemetry values from here on my small screen).
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Ah ok. But I am rather talking about about that:
from time 4:18 to 4:53 into the video , the TRDs collapse from eta 1.5nm to 1.0nm, so it is not necessarily “wind”.
Similar “cirlce-shape” differences can also be seen in the vertical loops, prior to the sustained turn test !
Talking about which, if TRT, G-load and speed and AoA is kept (assuming flown precisely) contant, SHOULD the radius (TRD) collapse as well, and IF - why (with one eye considering https://i.stack.imgur.com/wuiBV.png and WIND again) ?
The warped tacview dimensions - as mentioned above - is worth looking into.
I do however wonder, if the “medium” (the athmosphere aka air flown in) is “different” and what i always wondered - even in the past as sidenote - is i.e 1000 feet REALLY 1000 feet in the dimension and in relation to anything else in the game ? -
@A.S:
is i.e 1000 feet REALLY 1000 feet in the dimension and in relation to anything else in the game ?
Yes it is. (old urban legend coming from oversized building textures).