OK, I’ll bite, what is the combat radius of the Rafale with that load, then?
And how is that relevant to the F-35?OK, what is the maximum g-load under such conditions?
And, again, how is that relevant to the F-35?Yawn… How is that relevant to the F-35, please, remind me..
I’d love to have your problems, dude.. Is THAT it?
Picard’s figures for the Rafale are pulled from thin air, since none of it is confirmed or referenced anywhere else. His analysis of aerodynamics is rather naive with some fundamental misunderstandangs, to put it politely. If he is willing to pull out nonsense from thin air, it affects his credibility and makes his aviation analysis highly questionable.
Thank you for the link. So it seems like they chose a different solution from the F-22’s more effective (for IR reduction) but heavier nozzle. What do they use as aerosols? Cooling air or some kind of coolant stored on board?
Since day one i always thought IR was the weak point in T-50 ‘s design. I think with cowlings + the aerosol system (in a way similar and yet very different from YF-23’s solution) will get them there.
I believe I saw a diagram where it appears to have a ring of injectors near the base of the nozzle. But since I can’t read Russian I didn’t get to read about how it’s exactly supposed to work. Does someone want to translate? Do they pump refrigerated air through those injectors for cooling, or something else? I’d imagine that there’d be a bit of a drag penalty since it increases boundary layer back there.
Against future peers, the F-35 almost always ends up in a dogfight… If it even manages to get there.. Otherwise the T-50, J-20 and whatnot are waste of money..
How do you have knowledge of how the F-35 will be employed? In order for the outcome to be a classic turning dogfight, you’re working under the assumption that the F-35 and its adversaries will have the same or superior level of low observables and SA, thus forcing engagements on equal terms when it comes to sensors and targeting, a rather bold claim. And even in a furball, you’re also working under the assumption that kinematics is the end all be all, and any SA advantage the F-35 is nonexistent because it can somehow be easily countered by an “equivalent” system. It’s true that no solid data can be used to compare the F-35’s avionics with its peers, so we can only speculate. But at least be mindful of it, and ignoring the considerable investment and experience that the US has in these areas as an advantage is rather galling. Yet you seem to use the presumption that the F-35’s peers have equal SA and stealth as the null hypothesis without presenting any evidence of your own. And tell me, who exactly are the F-35’s future peers? Last I checked, the VVS still plan on ordering more Su-30SM and Su-35, and the PLAAF plans on making more J-11 and J-10 variants, and air forces are still taking deliveries of Gripens, Rafales, Typhoons.
In the end, it seems like your argument about the F-35 boils down to it not being useful for much of anything since it has unremarkable kinematics, and as a result it somehow can’t hold itself in combat missions, and that any low observable and SA characteristics doesn’t matter because its somehow easily countered by “equivalent” systems. You judgeaircraft based on its effectiveness in WVR with everything else neglected, and that avionics can be “matched” so easily. But what evidence do you have to present to say that IRST A equal to IRST B, Radar A equal to Radar B?
For those railing on single engine issues, what’s the accident rate of the F-16C Block 50/52 compared to, say, F/A-18E/Fs? How many of those are due to engine problems?
I do not think it matters. As it does not matter the actual sweep of the vertical stabilizer
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The angling of the vertical stabilizer complies with planform alignment and stealth, so different requirements and priority drive the shaping of the stabilizer versus the intake. And given that you care about angles you still didn’t even provide the ramp angle with respect to the free stream. Way to ignore the theta part of the theta-beta-M relation. And this is a moot point anyways because the oblique shocks from the F-22 (and T-50) are swept in multiple axes, so your 2D oblique shock tables don’t even represent what actually occurs.
Here is the statement from another pilot that debunked previous conclusions:
Lt.Col. Mike Showers debunked nothing from Paul Metz. Metz stated that the F-22 will climb at supersonic speed, he didn’t say it was vertical. That was a beginner’s mistake made by some fanboy on f-16.net. In fact both Showers and Metz agreed that the F-22 can gain altitude without using the Rutowski climb profile.
He says that fully loaded F-22 (fuel and weapons) would brake every time to climb record!
…
He claims that he would break every time to climb record that way with fully loaded F-22
Also, don’t put words in Showers’ mouth. His statement is this.
unofficially according to the engineers I would have ended up around 65+ thousand feet on that day and broke every time to climb record we could think of for category & weight class — and oh by the way, that wasn’t a Streak Eagle or Flanker stripped down bare with weight removed, no external stores for combat configuration, etc., that was in a stock, off the line F-22, full of gas, combat configured with the internal weapons bay full – as an Eagle guy previous I was absolutely astonished, I hope someday we go after the official records because this jet will likely crush most of them.
Showers said that he believes the F-22 would likely beat official records, he never stated that it would be done with full fuel load, or that those records would be in the Streak Eagle or P-42 weight class. He was astonished by the F-22’s climb compared to a similarly loaded F-15, his analogy to the Streak Eagle and P-42 is that the F-22 can achieve impressive climb without modifications, he did not state that the F-22 in that configuration would beat those particular records.
As for the initial acceleration from runway to subsonic, the Streak Eagle’s immense thrust-to-weight will offset the aerodynamic advantages of the F-22. Only near the transsonic and supersonic will things begin to shift in favor of the Raptor. And for airshow performance, weight does matter. For the same g that you pull, higher weight means greater stresses. That being said, I believe structurally, the F-22 is supposed to be rated for 9 g even in full fuel load. The F-22’s airshow is done with full fuel due to the potential need to divert to a nearby airbase if something goes wrong.
Related to the nose cone discussion:
Has anyone cared about what is the design Mach of thr Space Shuttle with its fatty rounded nose: Mach 24 (from my MEM).
The only restriction you have for the cone angle is that it fit inside the generated mach cone, which is related to the sin of 1/Mach. That’s it.
Actually I think paralay is right here, I’ve read that the blunt nose is more for heat dissipation in reentry. That being said I believe there are interesting drag properties with blunt bodies that make it beneficial compared to sharp bodies in certain supersonic and hypersonic areas.
Last I heard, 710 was testing izd.129 (which allegedly is the izd.30 low-pressure compressor). Any updates on what it’s testing now?
You are wrong. For supersonic aircraft, this angle is very important.
Braking flow in the intake passage with the “oblique” and “direct jumps”. The angle of the air intake is selected depending on the estimated airspeed.Estimated speed of flight of F-22 M = 1.5
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Wow, you’re mistaken. There you go again with your side view angles. You do realize that the F-22’s intake (and the T-50’s, for that matter) is swept in 3 axes. So your 2D theta-beta-M oblique shock relations aren’t accurate. And even then, you didn’t even measure angle of the free stream with respect to the cowl lip? Go review your basic compressible flow.
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You’re doing it again! When accurate dimensions of the T-50 are not known simply scaling up or down a frontal view simply won’t cut it. You know full well it is the smallest increments that can make all the difference (e.g. Eurofighter AMK).
Objectively, you will have to acknowledge that the F-22’s forebody does indeed look a lot fatter (specifically the cross-sectional area) than the T-50’s – this is primarily due to intake/S-duct and w/bay arrangement.
The dearth of accurate/credible details means this ‘eyeball’ analysis is perfectly valid- much the same as visually comparing a 757 with a 767.
T-50 wingspan is 13.95 m, a figure widely supported by insiders and in the leaked T-50-6-2 drawings. I scaled the frontal views to the best of my ability. Is it definitely accurate? No, there can be uncertainties with line drawings from patents and renderings, but I’d say it’s a fairly good representation.
Because the T-50 and F-22 are dimensionally similar. I’ve provided frontal views of both the F-22 and T-50 side by side, both are from official sources (from USAF, and from Sukhoi patent, respectively), and their frontal areas are almost the same. You’ll also noticed that I said frontal area, not cross-sectional area being similar. That being said the tandem weapon bays of the T-50 means that theoretically, it’s Amax should be lower than the F-22, which translates to better fineness ratio, which is beneficial for form and wave drag. I’ve even pointed this out in my earlier post. I’ve also noted that while the F-22 has larger vertical stabs, the T-50’s larger reference wing area, separate nacelles, and SRAAM protrusions mean that their overall wetted area may be quite similar. The T-50’s smaller all moving stabs has added benefit of providing excellent directional control and allows the aircraft to be directionally unstable (though the mounting and actuators for such all moving surfaces are generally heavier).
Note that I didn’t make any definitive statement about drag for either aircraft. In fact, if anything I believe the T-50 is overall more aerodynamically advanced than the F-22, precisely for the reasons I listed above (and before this post). I simply find certain poster’s attempts to amp up the T-50’s speed performance based on laughable metrics such as “it looks sleeker” or simply using side view nose angle to be ridiculous.
And if so? 🙂
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Your point? Using nose cone angle to measure max speed is utterly pointless. Especially when interpolating from a side view when shocks are 3D.
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You just said that the tunnel on the Flanker and T-50 produce more drag.
I countered it with compairing the F-15C and the Flanker, where the Flanker tunnel does not seem to hold it back in sub speed, transonic speed or higher mach speed.
My point being, the drag effect from the tunnel is very small and there is other aerodynamics parts that have a greater impact between the two.
You do realize that lift and drag aren’t constant in your maneuver envelope right? L/D changes with your lift and AOA. The Su-27 can have better L/D than the F-15 in high G turning conditions, but in cruise and dash, the F-15C even with -220 engines accelerates quite a bit faster than a Flanker. I recommend picking up a book on aircraft flight performance.
T-50 is Mach 3+ and closer to 80k ceiling class fighter.
:stupid: :stupid: :stupid: :stupid: :stupid: :stupid:
JSR’s delusion is unstoppable.
The nose-cone and the maximum speed of the aircraft 😉
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Wow, great. Nose angles for max speed. In which case the Su-34 must go 2700 km/h. :eagerness:
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You’re right, while the sensors suite on the F-35 will provide it with a unique ability to launch missiles over the shoulder, I don’t think this can yet replace high AoA maneuvers with HMS and HOBS missiles, especially when facing other 5th gen aircraft.
If you trying to infer that Rafale, F-18 etc can launch missiles over their shoulder they can, but have only done so using off board targeting transmitted via Link 16. I think we can both agree that this has nothing to do with flying BFM, unless your trying to argue that the dogfight is finally dead…
Getting launch parameters is one thing. But over-the-shoulder shot with something even as potent as an AIM-9X or a K-74M2 would drastically reduce missile Pk. So having good nose pointing and high AOA performance at low speeds are still matters in terms of getting more favorable launch parameters and missile effectiveness. That being said, you want to avoid getting into such a knife fight to begin with, as getting involved in such a combat situation means the pilot screwed up.
But thats not whats being argued! The argument is, and was, that the F-35 cant do High AOA under normal circumstances, and under control. The argument at 1st was that we had no video proof that the F-35 could Do high alpha. I proved that wrong.
Then the goal post moved to “Well, its only falling” I proved that wrong. A few people are purposely trying to hang up the argument on the purpose of the test, ignoring the fact that in order to get there then pilot has to command the plane. This is why these discussions get so ugly. The pro-F-35 crowd is fed up with intellectually dishonest individuals *Looks at toocool*.
And please lets not start name calling and making this ugly. You have no clue about my profession. Youve never had to use force on bad guys, or shoot them or fight them hand to hand, or deal with a riot. Dealing with criminals requires, a level of intelligence that people with multiple degrees cant comprehend.
Wasn’t it you trying to argue that the F-35 was doing a J-turn? No videos have demonstrated that happening so far. That’s not to say that the F-35 can’t be effective at high AOA. It seems that software updates since the January 2015 flight test report have made the F-35 very effective in that arena. That said, there’s also a difference between high AOA control, and maintaining high AOA in level flight. Somehow you seemed to have comically failed to distinguish between the two. High AOA simply means the aircraft attitude is at a high angle relative to its velocity vector, and that vector can be pointed in any direction. For testing it’s not necessary to always have it level.
Your profession has nothing to do with your understanding of aviation or aircraft, and so far you’ve demonstrated a rather blatant lack of understanding of even the basics of aviation. Funny how you accuse people of ignoring evidence, yet you yourself readily throw out and dismiss whatever evidence you don’t like.
Back to the F-35, the report suggests that it fights more like an F-18 classic Hornet rather than an F-16, i.e. more on high AOA rather than energy, which is consistent with other pilot reports coming out. I believe the best analogy for the F-35 is that it flies like an F-18 with better acceleration, which would make it quite dangerous in dogfighting, just like the Hornet. Does it have the best aerodynamics? No, it probably can’t maintain energy like an air-to-air configured F-16 or Eurocanard, or the F-22 and T-50. But the F-35 won’t be any less dangerous in a dogfight due to it’s AOA capabilities and nose pointing, as well as HOBS missiles. It and the F-18 probably has some of the best high AOA capabilities among Western fighters short of the F-22, and a smart F-35 pilot will fly to his aircraft’s strengths and be very effective.
A pilot’s testimony is not more “evidence” than eyewitness report about an alien abduction.
Especially with LM’s well established history of ordering both test and frontline pilots what to say exactly about the aircraft and what not.
I find this rather hilarious. So is the Janurary 2015 report highlighting the F-35’s troubles during its dogfighting exercises also not evidence? And what about pilot accounts of other aircraft like F-22, Rafale, Flankers? As if operational pilots are somehow coerced by LM to say what they want even if their national security is at stake? And somehow of any of the many pilots that have flown the F-35 who have dissenting opinion are silenced? But no wait, LM corruption so stronk! :rolleyes: This bordering on conspiracist. Your arguments remind me of creationists blathering “were you there?” to dismiss anything they don’t like to hear.