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Everything posted by henshao
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i don't know if I'd call them "chin" arrays but rather "cheek" arrays. it has room for left and right side-looking AESAs but they are not installed AFAIK. In other words it was a capability worthy to build into the plane should it become desirable
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I think the F-Pole had not yet been fully realized in the scenario I recall, so it was just hauling ass straight in. I still don't understand why apparently only the UK thinks it's worthwhile to be able to slew their radar a full 90 off axis, with the gimbaled AESA in the Typhoon
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reported AN/APG-63 range is under-represented
henshao replied to GGTharos's topic in Flaming Cliffs Bugs & Problems
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Yes if I recall a certain exercise, F-5's were able to kill more capable jets by getting to within AIM-9 range and shooting shortly before being killed themselves with a Sparrow already on the way. Loss of life aside, attrition would favor the side not throwing away phantoms or eagles
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I think this is too sweeping a statement. I remember reading in Desert Storm, F-15's expended many Sparrows on fleeing Foxbat...common sense would tell you this is an extremely low probability shot from further than a few miles and I doubt it was done within DLZ. A missile is expensive but an enemy aircraft even more
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This applies to more than just missiles in this game
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If it devolves into a furball then you can pretty much toss a coin unlike a growling sidewinder video, head-on shots are completely valid in this scenario. cat always benefits from that second set of eyes too remember kids: don't box a boxer and don't wrestle a wrestler. Tomcats and Eagles have a big ass radar for a reason
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clean acceleration is extremely close to the -1, still a little quick on the top end -1 dcs initial ~.83 ~.83 50 sec ~1.21 1.217 100 ~1.58 1.577 150 ~1.93 1.974 200 ~2.23 2.248 250 Beyond 2.38 2.422 300 Time Limited Pursuit 2.526
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there's more than one chart in there
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You did the test with a centerline bag? I tested without one
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Yes, I ran several acceleration tests. There are 3 problems identified in this thread: 1) the OP believes wing 120s drag more than fuselage 120s, when it should be the other way and by a large margin. I haven't checked this. 2) the F-15 with 8 missiles of any kind reaches mach 2 roughly on schedule but is too slow in the early part of the run and too fast in the late part to make up for it. I have measured this several times. 3) 8 amraams drag more than the cold war 4 sparrow/4 sidewinder loadout, when the -1 asserts 8 amraams should have a lower drag index. I have measured this twice
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Well as loathe as I am to acknowledge it, the -129 Viper is a bit quicker than the Eagle under similar circumstances @GGTharos have you noticed this transonic acceleration/amraam drag issue
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Eagle Missing Overspeed Damage Modeling
henshao replied to Cmptohocah's topic in F-15C for DCS World
up high, too. it's not as commonly realized but even at very low indicated airspeeds, high mach numbers put pressure on an object. pressure is nearly a synonym for heat- 15 replies
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after testing the acceleration and watching more closely, the F-15 is definitely lacking some acceleration on the "bottom end", just eyeballing it...after 100 seconds the Eagle should be mach 1.37, DCS eagle is ~mach 1.29. after 200 seconds the Eagle should be mach 1.75, DCS eagle is mach 1.76, after 300 seconds should be ~mach 2, DCS eagle is mach 2.05. so it has probably slightly too much acceleration outside the transonic region and quite a bit too little in it. Also the all AMRAAM loadout drag index is 25.4, 4 sparrows 4 sidewinders is slightly more at 26.2, yet it accelerates slower with 8 amraams. only reaches ~mach 1.96 after 300 seconds with 8xamraam, reaches ~mach 2.05 with 4sparrow/4sidewinder
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Drag index of a 120 on fuselage is 1.3, and 2.4 on a pylon, so almost double. (for reference a sidewinder is 2.0 under a wing) This is also not considering the pylon with launchers itself, which has an index of 3.3. So 4 amraams on the wings is (2.4*4)+(3.3*2)=16.2. edit: i forgot the lau-128s, 1.1 each. so the wing amraam penalty is a total of 20.6. for contrast 4 AMRAAMs in a hotrod configuration, fuselage only, is a drag index of only 5.2. (!) Old man McDonnell knew what he was doing, see also Phantom conformal sparrow carriage
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I tested the Eagle against the -1, a certain loadout to a certain speed in a certain time. It was within the margins of error 44k lb bird, 4 sidewinders 4 sparrows, 300 seconds to mach 2 from mach .8 at 40000 feet on a standard day. Unfortunately there are no amraam accelerations to test against. might be able to "simulate" such a thing with drag indexes but per-station drag indexes are not modeled on the Eagle (the fuselage stations are a much lower penalty than wing stations)
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Just basic Sparrow info: the Sparrow is fed "radar video" from the launching aircraft so that it knows just what set of photons to be homing in on unless a jammer is simulating the aforementioned radar, the sparrow should not be tuned to it. an illustration: Phantom A launches Sparrow A on Flanker A. Flanker B is jamming Hornet B. Because Sparrow A is tuned to Phantom A, and Flanker B is jamming Hornet B, Sparrow A should* not home-on-jam Flanker B because Flanker B's jammer is working on Hornet B's radar freq(s) *it is more complex than this but in a perfect world this holds true
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reported AIM-120s + All AIM-120 API Missiles in 2.7.7
henshao replied to DSplayer's topic in Weapon Bugs
AMRAAM now has 1000iq: destroy earth and enemy fighter MUST die -
F-15's stores drags disappeared simultaneously with the introduction of over-g damage, I imagine they're somehow related
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reported AIM-120s + All AIM-120 API Missiles in 2.7.7
henshao replied to DSplayer's topic in Weapon Bugs
forgive me but that brought back memories, does the JF-17 transform into a robot? -
reported AN/APG-63 range is under-represented
henshao replied to GGTharos's topic in Flaming Cliffs Bugs & Problems
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I've been on the receiving end of this, where the affected engine only delivered ~94% RPM IIRC (the engines are trimmed to 96%)
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in DCS you have basically only "noise" jammer, ie candle for the AMRAAM moth. but IRL there are many ECM modes that even fighters have access to, let alone dedicated electronic warfare aircraft. this is not a subject I know much about but even cursory knowledge of what cross-eye jamming is, is instructive https://www.heatblur.se/F-14Manual/general.html#an-alq-100-and-126-decm-defensive-electronic-countermeasures
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for those who didn't watch the video i made tops out about ~35 sustained AoA in DCS (max thrust)
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F-15 has a lot of subtle tricks up its sleeve. The wing is conically cambered, that is to say it reaps some of the benefit of a leading-edge slat design due to its curved shape: The F-15's nodding intakes not only function somewhat like canards, adding or dumping lift ahead of the CG under some circumstances, but IIRC they also function somewhat as a LERX as well, in addition to their primary function of providing unrivaled pressure recovery to the engines at high and low AoA The F-15 can sustain some pretty ridiculous AoA.