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hopsalot

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  • in reply to: F-35 Debate thread (2) #2267972
    hopsalot
    Participant

    The point of a VLO airframe is to remain undetected & untrackable until it is able to use its own weapons to complete the mission. If you can see the F-35 at 200 miles and the F-35 cannot launch until 50, then there is no point to stealth.

    Again, nobody claims a 200 mile fighter detection & track range on the F-35.

    Indeed, and it is worth mentioning that the F-35’s edge relative to 4th generation aircraft will grow as missile technology improves. However great the F-35’s advantage over a generic 4th generation fighter when both are armed with AMRAAMs, that advantage grows dramatically in favor of the F-35 if both are armed with Meteor or a similar missile. The key difference is that a Meteor has greatly expanded speed and NEZ relative to an AMRAAM, growing the F-35’s ability to take effective shots from beyond its adversary’s ability to track the F-35.

    In an imaginary comparison of an F-15 to an F-4, where both aircraft have equivalent sensors and the same missile, the F-15’s kinematic advantages would give it a significant advantage. The F-15 could launch from higher and faster, and turn harder, adding energy to its own missiles and shaving time/distance off of crucial timelines…

    If we alter our scenario to one where the F-4 has a Meteor type missile, suddenly the F-15’s advantage evaporates. It can still get higher and faster, it can still turn harder, but those marginal advantages, crucial in the previous comparison, will not be enough to put the F-15 on an equal footing.

    If you give both aircraft the Meteor, the F-4’s more limited kinematic capabilities once again re-appear, but the margin between the two aircraft has shrunk from the first comparison. The F-15’s kinematic edge relative to the F-4 is as large as it ever was, but that simply means less when dealing with a Meteor class missile. The F-15 can still launch a little higher and faster, but with an air-breathing missile with much greater energy… it just doesn’t mean as much. Same thing for being able to pull a couple more Gs in a turn…

    Returning to the original missile, but altering our comparison to one where the F-4 enjoyed the stealth and situational awareness advantage of an F-35, the F-15’s kinematic advantage is no longer decisive.

    If you give both aircraft the Meteor, unlike in the previous comparison, the F-4/F-35’s advantage does not shrink, it grows.

    in reply to: F-35 Debate thread (2) #2268903
    hopsalot
    Participant

    What you have missed is the time and effort (read fuel) spent to get there. By all means, the F-35 at these speeds is doing something it was not designed to do well and that will result in severe trade-offs in terms of combat radius/range. So severe that it simply does not pay off doing that beyond the purpose of a marketing stunt in order for the PR dept to write a me-too type article in the aerospace news.

    Can the F-35 fly at M1.6? Yes, obviously it can. Will they fly in service at these speeds? IMHO, not even at M1.2, because that too does not pay off due to poor transonic performance.

    Hardly, once again this is a case of someone failing to understand the difference between clean performance and loaded performance. You have a jumble of different numbers but you don’t seem to be able to put them into context. No 4th generation jet is going to be able to hit its maximum speed while loaded.

    The F-35 is capable of hitting M1.6 with a full internal load. The F-35 is not the fastest accelerating fighter in the world but in a realistic comparison it shows well and is more than capable of exceeding M1.2 under realistic conditions.

    Both Indian and Norwegian deals are OPUC, incl. spares, support and training (no weapons as far as I am aware). I am quite sure we would find subtle differences in details (we would find these even between two deals of the same type), but I don’t see how could these magically make Indians to pay $21bn instead of reserved $10bn. Because you would need that much to declare Rafale comparable to F-35 in terms of acquisition cost.

    Both of them include some of the same types of stuff huh? Seriously? That is the basis for trying to compare them head to head? There is room for a heck of a lot more than subtle differences within those constraints.

    As for the Rafale deal… some are already estimating that the Rafale deal may in fact come in near or over $20 billion.

    When the MMRCA selection process was initiated by MoD in mid-2007, the overall project cost was pegged at Rs 42,000 crore or $10.4 billion for 126 fighters. Since then, with inflation also being factored in, revised estimates indicate the figure will touch $20 billion, if not exceed it. If India goes in for 189 jets, it will further head north.

    http://articles.timesofindia.indiatimes.com/2012-02-01/india/31012278_1_rafale-mmrca-project-french-air-force

    Naturally this inconvenient report doesn’t fit your worldview and will need to be ignored…

    We are not talking about 10% or 20% difference here, we are talking about a double price tag. The day we can see $21bn instead of $10bn on the Indian deal or the Norwegians magically get 50% discount from the proposal they got on the table, I will be the first one to admit I was wrong. Until that happens, I am right, sorry.

    Until you are proven wrong you are right? :eagerness:

    You haven’t spent a lot of time in science class have you? Until you are proven right you aren’t anything.

    in reply to: F-35 Debate thread (2) #2268943
    hopsalot
    Participant

    So you are saying you don’t understand calculus? Fine. I thought you had learned since last time.

    Please enlighten me with the actual scan rate in frames per second and resolution of the sensors. I know you cant because of the calculus disability you seem to have. The reason why people laugh at the fanboys is because you think one gimmick can change the laws of physics. You think that one chart or marketing brochure is truthful depiction of reality. Here is a surprise revelation for you, it isnt.

    No, what I am saying is that this is a perfect example of garbage in, garbage out. Math is a useful tool only if applied correctly. If you create a completely worthless and unrealistic scenario then it doesn’t matter what math you apply to it.

    Charts and models are simplistic ways to explain a phenomenon. It’s compiled data presented in an easy to understand fashion. Nothing more and nothing less.

    :very_drunk: Smilies are also a simplistic way to explain a phenomenon, in this case your attempts to create pretty pictures to illustrate the worthless results of your calculation.

    When you make comparative charts of missile range and a simplistic [merge->engage->egress]-scenario the only thing you are trying to obtain is comparable data for the engagement envelopes. If I would assume that the F35 always would attack from the side (and still be spotted outside the NEZ) the difference would be that the EF only needs 5 sec to make the turn instead of 10. And then it would take a little while before we have the merge described in the beginning. But that type of comparison would be over complicated and not offer anything new. And considering that a simple schematic of the most basic enagement was too complicated for you I wont bother.

    Garbage in garbage out. Real pilots have spent a lot of time and effort on sophisticated simulators and the results show that the F-35 will be highly effective.

    Again, these are not LM simulations.

    I have purposely not gone over advanced examples as that would just be a long series of charts you wouldnt understand.

    Don’t kid yourself…

    Tell me how they measure it differently you poor excuse of a troll.

    The SwAF estimates include everything from R&D to operation, weaponry acquisition, ground equipment and so on. Please read the original documents. They are online.

    Now now, lets not start name calling. The simple fact is that every force calculates with different assumptions and you can not simply grab two numbers off the internet, neither of which you understand, and then start trying to slice and dice them.

    in reply to: F-35 Debate thread (2) #2269028
    hopsalot
    Participant

    Gripen E is not IOCd. The way I took cost calculations whas the Canadian numbers (45,8bn) divided by number of ac (65) = $705m per jet over 42 years and compared it to SwAF TCO estimates for Gripen E over 30 years, harmonized the numbers => $503 milj per 30 years. The result was Gripen E $214m per jet, Rafale is usually ~30% more expensive putting it at $278m. Net margin = 503-214= 289m for Gripen E or 225 left for Rafale.

    :very_drunk:

    Sooooo you took the cost estimates of one airforce with one set of assumptions and compared them to the cost estimates of a different force with completely different assumptions. Let me stop you right there. You are wasting your time. You are wasting everyone’s time.

    This is right up there with people who want to divide the costs of various export deals to compare prices. :rolleyes:

    in reply to: F-35 Debate thread (2) #2269096
    hopsalot
    Participant

    Yes cost is hurting now…But in the future this might not be the case…RAAF estimates that once the procurement is over their average cost per frame procured may come down to as much as 85 million a pop, this is very competitive, maybe not with the Gripen but definitly with the rafale, while both are IOC’d mature weapons systems while the F-35 is still in testing….Apples and orranges…Circa 2025 things could look a lot different (provided if these fighters are still in production)

    Costs are coming down, but his cost comparison is bonkers in the first place. The Eurofighter and Rafale are hardly cheap aircraft and while the Gripen NG may prove to be cheaper, its entire future remains in doubt until the Swiss make up their minds.

    In any case the decision is never simply between fighters and munitions/SAMs. Anyone buying high-end fighters is also going to buy SAMs and stand-off munitions.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2269176
    hopsalot
    Participant

    Is that not also true for the CFTs on F-15 and F-16?

    That is true of the F-16, not sure about the F-15.

    In the case of the F-16 and F-18 the CFTs actually generate a little bit of lift due to their shape. That lift will largely or completely offset their drag at cruise speeds. I don’t know if the same is true of the F-15.

    In all three cases the conformal tanks will have far less drag than a traditional external tank. In real world operations these aircraft operate with external tanks essentially 100% of the time and would only jettison them in the rarest of circumstances. A “clean” F-16 with CFT suffers a performance penalty when compared with a truly clean F-16, but in most real world comparisons the F-16 with the CFT comes out ahead.

    In a sense it is a lot like the debates surrounding the F-35. It is penalized in a clean configuration comparison with a 4th generation aircraft because of its large internal volume but when both jets are loaded for real world operations the F-35 handily exceeds the performance of the aircraft it replaces.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2269207
    hopsalot
    Participant

    Best tour/discussion of the “Silent Hornet” yet:

    http://www.flightglobal.com/blogs/the-dewline/2013/05/fa-18f-cft-weapons-pod-mockup.html

    A few key bits:

    Conformal tanks are essentially drag neutral at cruise speed but impose a penalty at transonic speeds. (No surprises)

    A Super Hornet with conformal tanks and a weapons pod with 4x AMRAAM will have similar drag to a SH with just four AMRAAM. This aircraft would also have a lower RCS of course.

    The flight test this summer will include the internal IRST, and a “slew of RCS enhancement measures.”

    Not discussed but clearly visible on the aircraft are missile warning sensors. Not clear if those are part of the flight test.

    Nice looking jet, throw in the enhanced engines and you will be talking about a really potent aircraft.

    in reply to: F-35 Debate thread (2) #2269235
    hopsalot
    Participant

    This assumes a lot of stuff which would be debatable for most missions…What would be the most optimum 4.5 generation flying altitude and speed? This would depend upon how much tanker support is available, how many fighters are available to cover what area…So you cannot simply assume that the 4.5 gen fighter able to supercruise would be operating at its most optimum altitude and speed. Second, the tactics are relevant because straight line engagements are NEVER going to happen, the Entire concept/purpose of VLO fighters is to give you that FREEDOM against active/passive sensors to position yourself in a position from where the opponent even when able to use those sensors closer up will find extremely difficult to get out of. .. So if you are going up against a fighter that has awesome radar (modern AESA ) and forward PASSIVE IR Sensors, then you may aswell point an intercept from a different angle…Like i said tactical flexibility is MORE fothr the fighter that has more REACH with its sensors while limiting the ability of its opponent. This Handicap would always remain, hence SERIOUS opponents of VLO fighters are VLO fighters and all those that can afford them are getting them. The goal for every fighter in any engagement is to use its established intel on trying to position itself in an intercept where the opponent is least effective…For an F-35 opponent that would be to get out of the EOTS passavie range as the DAS is shorter ranged and less qualitative..Similar would be the case for the F-35 vs other fighters…

    He seems to really want to create scenarios where situational awareness either doesn’t matter, or where “his” plane somehow has similar situational awareness as the F-35. (neither of which is going to happen)

    Consider the huge advantage operating with an AWACs grants even for non-stealthy 4th generation fighters. Yes their 4th generation opponents can theoretically detect them at substantial ranges, but even so having an AWACs is a huge advantage because it gives your side the big picture and thus the ability to decide the terms of the engagement. Your opponent will be reactive from the word go, and you would be operating with much more complete information.

    With a true stealth aircraft that advantage is enhanced tremendously. His widely dispersed formation of Eurofighters supercruising at M1.4 (lol) would be fighting blips that wouldn’t even appear for the most part until well within their engagement range… while the F-35s would be seeing the big picture. It is quite simply a losing hand to be dealt and that is why the F-35 has the backing of so many forces.

    in reply to: F-35 Debate thread (2) #2269242
    hopsalot
    Participant

    You forget that one is cruising at m 1,4 and the other needs +60 seconds of after burner usage to get close to that speed. But with afterburner the currently fielded IRST-systems will detect the target at some 80-90km. So the blue bar for the EF gets even longer while the orange bar for the F35 gets a little bit closer to the Eurofighters. But still the Eurofighter has a larger margin.

    But lets run the numbers, since you can’t.
    25 sec burn, 1500m/s (theoretical max for METEOR) => 37,5
    Subtracting turn gives 15km + 22,5- EF distance travelled in opposite direction (7,5km) = 15 + 14,85 ~30km
    For the F35 it translates to 30km + 7,5km – 1,8km ~36 km or 20% longer effective range vs F35.

    If the missile travels at mach 4, or 1200m/s we get the following.
    EF 2000 as target, effectively engaged at ~ 23km
    F35 as target, effectively engaged at ~ 27km

    Of course + a little bit of glide flight in the end.

    The big difference here is that the Eurofighter will track and lock on the F35 at 90km (or at least track) instead of some 50km and that the F35 will get a better launch speed (that in this example is greatly exaggerated pro F35).

    The assumption I make here is that the F35 will have lower exit speed from the turn than the EF will because of the higher induced drag in the turning (because of poor lift/weight ratio => higher alpha => higher drag with a thrust/weight ratio that is too low to compensate for it). In other words, its based on physics and calculus. Now do you have anything but flamebaiting and smileys to add?

    Not that it changes the outcome in any way but some level of accuracy should be present.

    Time for another round? :very_drunk:

    No aircraft, including the F-22, supercruises just for the heck of it. It is more efficient than using afterburners but it still burns a tremendous amount of fuel.

    Spelling it out simply, the Eurofighter in this scenario would not be supercruising at M1.4 before becoming aware of a threat. Additionally, the F-35 would not simply fly straight at the Eurofighter unless it was being operated by a total idiot. Even if we assume the EF was through some fluke at M1.4 the F-35 would have the freedom to decide how to enter the fight.

    Next, IRST systems do not look everywhere at once. (Unless we are talking about DAS) A target would have to be within its field of view and detectable. Even if this were the case an IRST only scans so fast and detection is not instantaneous. IRSTs are useful tools, but they aren’t the magic stealth beaters that the fanboys of the internet wish they were. If you are relying on an IRST as your primary sensor you are giving up a lot.

    Next, decision-making takes time. The F-35 in your scenario would have a period of time to evaluate the situation, coordinate with any wingmen, etc, before committing to the fight. You don’t simply detect a blip and then instantly race off to go lobbing a missile at it, especially if you were relying on an IRST which would deny you range and speed data in that initial detection. Your Eurofighter pilot would see a blip, he would know its bearing and rough altitude, but would not know either its range or speed. It is also possible that the initial detection was a false alarm, or something extremely distant and bright that bore no relevance to his aircraft.(A missile launch far in the distance…) He wouldn’t even know if the blip was approaching him or moving away… simply put, it takes time for a human to gather information and make a decision. Not only wouldn’t he know what he was dealing with, even if he had valid range information he couldn’t assume a missile wasn’t already bearing down on him. 80km is well within the effective range of an AMRAAM or Meteor. The F-35 could plausibly have fired at 100km, and then begun to accelerate for a potential follow-on shot. If the EF turned toward the mystery blip and went racing toward it the moment it saw it that follow-up shot wouldn’t likely be necessary…

    etc etc etc

    This isn’t about numbers. This is about lacking even a basic understanding of the factors at play here. You can’t simply cook up an APA scenario and make a pretty chart and expect to be taken seriously. Real pilots have war-gamed these scenarios over and over again in the best simulators available and the results were very very good for the F-35.

    in reply to: F-35 Debate thread (2) #2269524
    hopsalot
    Participant

    Don’t be ridiculous. The bird can neither supercruise, nor can it get to M1.6 as a tactically reasonable capability. Your once-in-a-lifetime-for-a-minute-and-half “specs” are worth hardly the sheet of paper they are printed on. The F-35s will spend 99% of their flying time at subsonic speeds and that is where they belong.

    There are contradictory reports on the F-35’s supercruise performance. Everyone agrees that SC was not part of its requirements, but then neither was a vertical take off capability either.

    As for the M1.6 top speed, you have things completely backwards. Unlike almost every other fighter in service today, the F-35 can actually achieve its maximum speed while carrying a meaningful weapons load. Every 4th generation fighter suffers substantial performance degradation when carrying a combat load.

    Oh, that says a lot. Every single plane manufacturer claims the same from the simulations. What exactly is there known about the parameters of the Advanced Red Air? They can be easily be adjusted to get the politically correct result everytime..

    Lets get one thing straight for once. Those simulation results are not the product of LM, they are man in the loop tests performed with real operational pilots against the most realistic possible adversaries.

    All Eurocanards are cheaper to procure, quite significantly. The Indian order for 126 Rafales (incl. spares, tools and accessories) is set at roughly $10bil. Norwegians are getting their 52 F-35s for NOK 62.6 bil which is $10.8bil.

    Do your math before claiming nonsense, again.

    You have no business telling anyone to “do your math” if this is what you think passes for “math.” Every export deal includes different terms and equipment. You can’t expect to just childishly punch the numbers into a calculator and get an answer that is worth anything. Even if you could, there is no real price for the Indian deal because they haven’t even been able to come to terms.

    in reply to: F-35 Debate thread (2) #2269526
    hopsalot
    Participant

    Pls stop trolling Spud.

    I will show it with a graph what kinematic performance does and why it is so important.
    [ATTACH=CONFIG]216856[/ATTACH]
    As you see the superior avionics and VLO platform makes the track and detection range relatively impressive. But is it comes at the expense of poor kinematic performance this means that the enemy will have one advantage in launch speed and one in exit speed. In the case of EF 2000 its close to doubling the effective range of a Meteor. This is just physics and has nothing to do with avionics so far.

    Against old jets however it is a different story. What the ultra cool stuff like EOTS, stealth and radar does is increasing the blue bar for the F35. But unless the orange can keep up it is of no benefit at all.

    The can’t climb, cant run argument is the relative performance of the F35 vs the competition. And that assesment is as correct as it gets.

    The F35 is not designed as a fighter jet. It is the most advanced attack jet made but without kinematic performance that’s on par (or close to) the competition it simply isnt good enough as a fighter. And you can have as many cool gizmos as you please, but unless your orange bar is larger than the enemys blue bar it will be a fight where kinematics crown the winner.

    EDIT: The F35 should have a larger blue bar but I dont see if that matters.

    :very_drunk:

    Hilarious, you made up a chart to illustrate your simplistic calculations… is APA hiring?

    Even if your numbers were accurate, and they aren’t, a Eurofighter’s hypothetical ability to achieve higher speeds or altitudes isn’t worth much when fighting a threat it can’t detect reliably at long range. You need significant space and time to accelerate and climb to an optimal release point for a BVR shot. That is plausible against a 4th generation aircraft that you can track 150km+ away, but you are never going to have time for that against an aircraft like an F-35.

    The far more likely scenario is that an aware F-35 will decide to engage or avoid the fight and it is the F-35 that would likely be able to accelerate and climb rather than the Eurofighter.

    Naturally that won’t fit your world-view so you will just ignore it. :rolleyes:

    in reply to: Stealth aircrafts have serious problem! #2269990
    hopsalot
    Participant

    I find myself wondering just how many SECRET weapons (or even just plain ordinary secret weapons) from the past have turned out to be game changers.

    Um… we could start with the atomic bomb, or the proximity fuse, or the jet-powered fighter.

    If the Cold War is more your thing then the F-117, SR-71, U-2, and R-7 (ICBM) would seem to fit the bill.

    in reply to: Stealth aircrafts have serious problem! #2269997
    hopsalot
    Participant

    That’s about the most accurate F-35 description i’ve ever heard.

    Except for the part about the range of course…

    in reply to: Stealth aircrafts have serious problem! #2270006
    hopsalot
    Participant

    Oh get away with that bullsh!t. I’m not even going to read the rest of your post after that purepish lifted straight from a lockheed powerpoint.

    That doesn’t speak well of your understanding of the subject at hand. The F-22 is a force multiplier. It will work with the F-35 and the various 4th generation aircraft to accomplish the overall objectives. By doing what it does well it will increase the effectiveness of the other aircraft it operates with.

    in reply to: Stealth aircrafts have serious problem! #2270030
    hopsalot
    Participant

    I think you miss my point.

    The USAF are tying themselves to a solution strongly emphasising VLO and sensors.

    The others are considering LO, sensors and, at least for the Russians, placing very high emphasis on kinematic performance.

    Which route is right depends greatly on your point of view.

    There is nothing so simplistic as a “right” answer, it depends on the intended mission of the aircraft and how it works to achieve that mission.

    The US (specifically LM) has built and operated high-speed, highly-agile stealth aircraft (F-22), it has also built and operated strictly subsonic stealth aircraft with very limited maneuverability (F-117). The F-35 was intentionally speced out to fall between those two designs by the Pentagon, and designed and built by the same manufacturer that designed and built the previous two designs.

    The F-22 is not a substitute for the F-35, nor is the F-35 a substitute for an F-22. (Just as the F-15C and F-16/18 are not interchangeable aircraft.)

    The F-35 is a multi-role fighter and more than capable of replacing the aircraft it is designed to replace, but it is not a replacement for the F-22.

Viewing 15 posts - 2,326 through 2,340 (of 2,738 total)