GGTharos
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Posts posted by GGTharos
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The launch range is 53nm at 50000', from mach 2. The target is head-on, non-maneuvering, with same altitude and speed.
The range_max indicator is probably an old and possibly no longer used field, there are other fields which are used to calculate the DLZ. It's not perfect but it works, more or less.
At lower altitude and speed (about 30000', M1.2) the AIM-7F should have approximately 30nm range (50km)
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^^^^
This. People want their silver bullet all the time, but the fact is that taking down a powerful SAM site requires you to overwhelm it so that some of your weapons get through or they're forced to temporarily shut down, or possibly employ other tactics (Which are not currently possible in DCS). -
59 minutes ago, Csgo GE oh yeah said:
I honestly saw this coming from the very first "aim54 should go active on it's own" thread over a year ago. It was just a matter of time
At least Ironmike is can also laugh about it judging from his comment
How about proving them wrong then? You obviously have loads of knowledge and documents on the subject so what's the problem?
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Just a start, there are probably far better accounts of the engagements out there:
https://en.wikipedia.org/wiki/Air_engagements_of_the_Gulf_War
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3 hours ago, Nahen said:
During the desert storm, no Iraqi MiG tried to engage in combat with the F-15.
There are at least two separate MiG-25 engagements, one of which ended WVR and one high-fast with both sides taking shots at each other, and at least one MiG-29 engagement which ended WVR and a lock or even a shot was taken at an eagle at or under 4nm.
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No, in-game.
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Are you saying that the MPRF simulation aspect isn't there?
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8 hours ago, KenobiOrder said:
Because that is what the publicly available data says it should be.
What public data? MPRF should be 40% of HPRF range. It's just physics.
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That wobble is probably more visible than it is significant. Otherwise there would be a significant range cost which documentation doesn't bear-out.
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In the western jets you get full range of each PRF, but the time required to run a full frame is doubled (more specifically, you have to run two frames instead of one for full coverage) so there may be a perceived loss of range based on the radar scan volume.
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52 minutes ago, Chizh said:
Why it should be removed?
Right now in say, the FC3 planes, interleaved acts like some sort of different mode with an intermediate range. It isn't actually 'interleaved', it just tries to 'average' some sort of results for interleave but it is incorrect. It should provide the maximum ranges permitted by each PRF, on alternating bars like in the 'full fidelity' models.
I believe ED does not want to do that for FC3 because it would require for the FC3 radars to actually process radar frames and basically it would add complexity.
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12 minutes ago, gortex said:
The rl pilots, like mover and lex, have given up arguing with sim pilots on this topic. You offer a good demonstration why.
You offer a good demonstration of not knowing the subject but just wanting things to be equal
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They are micro-doppler extraction which is a whole technique sitting upon another technique ... most of the discrimination I've heard of for detection is just be out of the notch and be above noise floor, nothing more. For locking on, you'd use doppler and range gates, for keeping track you might start looking at RCS discrimination in the event you had a sudden RCS bloom (not reduction).
A bunch of missiles have size switches but AFAIK this sets fuze sensitivity and maybe seeker activation range. If there's any RCS discrimination going on there I don't know. There could be thresholds but given that RCS is variable IRL, I think they'd be fairly large bins.
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44 minutes ago, gortex said:
Sure, over g happens,
More often than some want to admit.
44 minutes ago, gortex said:but it is bad piloting,
This is true.
44 minutes ago, gortex said:and some aircraft have broken up mid-air.
And the vast majority have not. Certainly not from the over-g's being complained about.
44 minutes ago, gortex said:It is not fair that some aircraft suffer consequences for it and others do not.
Too bad. Even when they will suffer them (I'm sure it'll come) it's still going to be worse for some that it is for others.
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So veeery ballpark but, you're going to eat a bunch of drag when you pitch up, and then you're already sunk by zero-aoa drag when you hit 1km (amd 0 aoa drag is not all you have, you have some induced). Looks right to me, but maybe I'm not seeing the whole picture or I miscalculated.
Your only opportunity to accelerate or even maintain speed is between 0 and 1km, and even there your margins are slim.
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The 29's motors have fairly poor performance at slow speeds IIRC. Anyone someone posted the thrust curves here, I don't know how that lines up against your tests.
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19 minutes ago, KenobiOrder said:
Most super sonic Ashm dont move at mach 3-4, and they are significantly larger.
Being larger only theoretically changes detection distance, nothing else. This is assuming they don't have any RCS reduction features. And sure there are mach -3-4 AShMs out there, even old ones.
19 minutes ago, KenobiOrder said:Given that they have a similar shape to air to air missiles, they almost certainly have a larger RCS. So there are multiple ways you can discriminate these targets. Unless you think a PL-12 has the same RCS as a Mig-25.
So what? Again all it changes is detection distance. I've never heard of the radar discriminating by RCS. Last I checked it's literally all about detecting whatever's in the air and outside of the doppler filter and above the noise floor.
19 minutes ago, KenobiOrder said:They take at least two (and as I know you are aware, many real systems we have info on take more than that) frames before they upgrade a target to a track and display in on the radar screen.
Yes, the track system in DCS isn't great, but it's not true that the hit won't be displayed on screen. Position and closure is known from a single pulse or at least a single train of pulses for the doppler.
19 minutes ago, KenobiOrder said:No jet accelerates like a AAM, so if the TWS system would very likely continue to see many such missiles as False Alarms because their statistical distance from the first detection (if its coming of the rail for example) would be wildy beyond any reasonable maneuver gate.
If you can build a track for a MiG-25 you can build one for an AAM. Sure, it would take time to build the track but not as long you may think. I agree though it won't be anything close to instant.
19 minutes ago, KenobiOrder said:A mig-31 doesn't quite get there, and again you could just discriminate by RCS.
You will never discriminate based on RCS if you don't have to. Give up on that made up idea. The first order of EW in some cases is to change the RCS of a target to be bigger than it appears. Heck, chaff does that.
19 minutes ago, KenobiOrder said:Off the top of my head and cant think of a single valid target that is going to have around a -10db RCS and also is flying at those speeds.
All you need is a little ECM to drop the SNR. So what if you can't think of it?
19 minutes ago, KenobiOrder said:If the RCS were reduced to more reasonable levels, this issue would be greatly reduced.
That I agree with.
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6 hours ago, KenobiOrder said:
On top of everything that has been said so far I seriously doubt that modern fighter radars would generally allow missiles to show up at all.
How would they know? What's the difference between an AAM and a supersonic AShM that you want to shoot down? Or a MiG-25/31 going mach 3?
6 hours ago, KenobiOrder said:As it does in DCS, it clutters the radar screen and makes it vastly more difficult to achieve adequate SA. Because of the way this is implemented at the moment the second everyone starts shooting the radar turns into nightmare where its hard to tell if the new targets suddenly appearing on the screen are missile or just new contacts you didnt see before etc.
Oh no, combat is messy.
6 hours ago, KenobiOrder said:-Right now missiles can be detected throughout their flight path. It seems extraordinarily unlikely that anyone would want a fighter radar displaying mach 3-4 targets with closure speeds impossible from any valid target, such as a enemy plane. In fact IIRC Ive seen radar manuals where the max target speed is far below this.
There are valid Mach 3-4 targets out there. You probably don't want to miss them.
6 hours ago, KenobiOrder said:-The RCS of the missiles seems excessive, especially rear aspect. Why is my radar capable of detected a AIM-54 or Aim-120 as it closes in on the target 20-40nm away? Its difficult for the DCS radars to detect aircraft that are nose cold at those ranges...much less missiles.
Sure, but that's a different issue.
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On 9/26/2021 at 1:26 PM, bkthunder said:
In both test I am well above a T/W ratio of 1, so especially in the second low-speed test the aircraft should maintain speed for a bit while climbing. It doesn't.
The margins when considering drag are narrow. How long would you expect it to climb before altitude-induced loss of thrust occurs? Are you looking at CAS or TAS?
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3 hours ago, Hairysteed said:
LOL No! Just... no!
Ever heard of Newton's 3rd law? How do you suppose rockets get their thrust in the vacuum of space?By using rocket fuel which includes the oxidizer and fuel ... whereas a jet engine gets it oxidizer from ... air. Which must be rammed into the intakes. Congrats on your physics fail
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If there are low altitude acceleration charts for the MiG-29, you can easily find out if the engine power is correct or not.
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5 hours ago, Cmptohocah said:
Can they pull 12+G without breaking in DCS? The Tomcat and the F-5 I mean. I don't own them, hence the question.
I don't know if the F-5 can reach 12g at all, but I have definitely seen it survive a very enthusiastic 10g turn into superior bandits...the airframe was destroyed soon after because the GLOCd pilot was well .. GLOCd and flying less than 1000' off the ground.
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Oh please. You know all of that is BS, this is all about said targets knowing when they're being launched on in TWS.
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It's the contrail. Jet engines and rocket motors will create contrails in different conditions. Theoretically ED could take this into account but the whole contrail thing is already pretty simplified.
Insufficient range of AIM-7F missiles
in Баги и Проблемы
Posted
I tested this a long time ago and it was approximately correct. Maybe something has changed.