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Ryan

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  • in reply to: Eurofighter Typhoon discussion and news 2015 #2126406
    Ryan
    Participant

    I have provided ample sources given that you haven’t provided a single one. Here is an idea, go find a source that actually says triple the NEZ of the AIM-120C5 and we can talk.

    No. All you’ve done is fortuitously stumbled across someone in a PR department at the RAF who doesn’t know the difference between lbs and kgs, with a proven track record of providing bad data, who thought that the AIM-120B was the current version of the AMRAAM in 2013. If MBDA specifically stated this, show me where.

    All the sources in this thread

    You’ve presented one. A source which also lists the weight of a Storm Shadow at 1,300lbs. Clearly someone who knows what they’re talking about.

    Furthermore, MBDA will not and can not specifically state C-5 because of the MTCR, which is also why the range of Storm Shadow in your ‘reliable’ source was reduced from 300+nm to 180 miles. Many of the other figures quoted in this reliable source wouldn’t even pass a wikipedia peer review.

    And who is ‘newsdeskmedia.com’ that isn’t even an official RAF site? Some reliable source.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126442
    Ryan
    Participant

    Except I have and mine don’t contain such a comical array of errors and are dated 2014 and there are several of them. If MBDA have indeed stated 3 times AIM-120B, you won’t mind showing me where on their own sources?

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126449
    Ryan
    Participant

    Sadly the RAF booklets are anything but reliable. You’ll find the speed of an AIM-120 quoted at M2.5 here and range at 20nm. The range of an air-launched ASRAAM quoted at less than the range of a ground-launched CAMM and yet a higher speed than the AMRAAM (Mach 3+). And the quoted range of Storm Shadow in the following link is quoted at in excess of twice that quoted in your link. Your link also quotes the weight of a Storm Shadow at 1,300lbs.:highly_amused: So it’s a litany of errors from start to end. And I spotted all that in the first 10s.

    https://www.raf.mod.uk/rafcms/mediafiles/E28BE76F_5056_A318_A833EB4C9A735AD8.pdf

    And no mention of ‘3 times’ in your other sources, so all you have is one extremely erroneous source using 15 year-old specs that have already been exceeded in testing.

    I could even show you this RAF publication that states 250km for the Storm Shadow. So in 3 different places we have 180 miles (290km), 250km and 300+nm (560km) and 1,300lbs. And you want to use RAF booklets for accurate information? Maybe it was the original plan, when the spec was still about 100km, or maybe the writer’s hand slipped like it did in so many other places, or maybe they just didn’t check there facts, like in the other places too. Sometimes I think their intent is to spread misinformation deliberately.

    https://www.raf.mod.uk/rafcms/mediafiles/0186cc2a_1143_ec82_2ef2bffff37857da.pdf

    20km – I wouldn’t take any range figure in these booklets as read. They will understate prolifically and if we take the 100km for SPEAR, designers already believe 120+km is possible.

    in reply to: General Discussion #239852
    Ryan
    Participant

    Not in terms of the net picture. For most in the UK it was a problem. Hundreds of thousands of people landing on a country looking for work, automatically able to claim benefits after 3 months. If it was simply a matter of goods transportation, tourism, business travel and people with jobs paying >£30kpa moving around, there never would have been a problem. In its present guise, freedom of movement is really freedom of residence and residence isn’t free, ergo it’s a problem.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126493
    Ryan
    Participant

    https://www.publications.parliament….94/694we11.htm

    This 1996 article likewise uses the AIM-120B as the point of comparison for the 3x NEZ claim:

    Grp Capt Graeme Smith, British Aerospace’s military air advisor, says that”-current medium-range weapons suffer from a lack of overall total energy in that they do not have the manoeuvrability required to achieve a kill against a highly agile opponent: that is, they have a relatively small no-escape zone”.

    It is believed to have been just such a conclusion that prompted the RAF to look beyond a conventional solid-rocket design (for the EF2000, the AIM-120B) to a more capable missile with a greater energy for the “end-game engagement”. There is no point in a missile reaching the final stage of the engagement if it cannot deal successfully with a target manoeuvring at 9G-plus. As a rule of thumb for a successful BVR engagement, a missile needs to have a minimum of three times the manoeuvre energy of its target. If a target pulls up to 10G in an evasive manoeuvre, then the missile will need to sustain 30G-plus turns at the end of an engagement to record a kill.

    Some sources indicate that RAF simulations of the Sukhoi Su-27 Flanker and Flanker Plus derivatives and associated missiles versus the EF2000 with the AIM-120B revealed an unacceptably poor exchange ratio. The focus fell on providing the EF2000 with a missile, which has a far greater no-escape volume at BVR ranges.

    As Smith points out, the BVR environment is also expanding, as heralded by the emergence of the Russian Vympel’s long-burn R-27RE (AA-10 Alamo). Traditionally, the BVR engagement has gone out to around 40km (22nm). The next generation of BVRAAMs will push the engagement envelope to around 100km.

    As well as providing increased absolute range, the rocket-booster/ramjet-sustainer design, more importantly, offers an increased no-escape zone. A ramjet-sustainer AAM potentially triples the volume of space within which the probability of a kill remains high.
    https://www.flightglobal.com/news/ar…velocity-9972/

    Neither source makes any mention of ‘3 times NEZ’ only ‘far greater NEZ’, all the sources that do state ‘3 times NEZ’ post date the AIM-120C-5, and range from 2008 to 2014. The B was long gone history at that point. Nice try though.

    And to further add, where it states ‘around 100km’, the Meteor has already made an intercept at ‘well in excess of 100km’, so it looks like early design targets were exceeded.

    http://www.ainonline.com/aviation-news/defense/2012-07-08/theres-no-escaping-mbdas-meteor-missile

    GF2 was a tough test of the missile’s ability to snap-up through thick air in a tail chase. GF3 then tested high-altitude performance, GF4 was a longer snap-down tail chase against background clutter and GF5 was a high-speed head-on engagement at “well in excess of 100 kilometers,” said Bradford. The Meteor’s actual maximum range is classified.

    Finally, GF6 was another long-range and head-on engagement in March-April of this year that fully tested the missile’s data link to and from the launch aircraft. Bradford noted that the targets for all except GF5 were high-subsonic Mirach drones with a radar cross section “equivalent to a real-world fighter,” according to Bradford. GF5 engaged a BQM-167 drone.

    “All the targets conducted a final evasive maneuver,” added Bradford.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126531
    Ryan
    Participant

    The article says “AMRAAM,” not the C5 specifically. Really, I get your desire to read it in the most favorable possible way but you haven’t provided a source that speaks to the C5 comparison specifically.

    Repeating sources that don’t support your argument doesn’t really help you any.

    Not at all. Were it written in 2004 I might question whether it referred to the AIM-120B or C. But in 2014 there’s only one way to read it. And when other sources in 2008 and beyond state ‘current MRAAMs’, are we to assume they actually mean ‘current MRAAMs except the AIM-120C-5’?

    http://www.defense-update.com/newscast/0308/news/news2103_meteor.htm

    And MBDA itself didn’t physically exist until after the C-5 was out and in their slide they again say ‘current MRAAMs’…. except the C-5 right? Give it up.

    Repeating dead arguments won’t help you any.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126535
    Ryan
    Participant

    Meteor is slower to accelerate and reaches a slower peak velocity than “Current MRAAMs.” That is an obvious drawback in a relatively short ranged scenario.

    Yes, I referred to that slide in my previous post but the missile is throttleable, so what flight profile is that for? Long, medium, short? What altitude? Is there a reason the speed picks up third-way and then drops back? If we assume the bit after the two lines diverge is where the VFDR takes over, clearly the initial thrust at that point (i.e. burn rate) is greater than at half or third-way. So had that thrust continued (full throttle), what speed would it have reached?

    Okay, you’re really talking about Rmin, and I concede the Meteor may have a larger Rmin, but then neither missile is ideally suited or designed for close-in work.

    It will be used in conjunction with F-35s, with the F-35s flying up front with a limited number of missiles, or perhaps only 2 missiles and bombs. The F-35 will target enemy aircraft for a greater number of Typhoons carrying a larger number of missiles. I think you underestimate people’s foresight too. The YF-22 had been flying around since 1990. Future operations with stealth aircraft were likely envisaged and right now no non-NATO state has operational stealth fighters and it could be sometime before they exist in significant numbers and some of them don’t look that stealthy.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126554
    Ryan
    Participant

    You still haven’t provided any actual support for your assertion that they are referring to the AIM-120C5. I get that that is what you would like to believe, but you haven’t supported it. If anything the general language they have used suggests they are speaking about the category of medium ranged weapons generally, not the AIM-120C5 specifically.

    Dude seriously, you’re needlessly running a dead argument, pretty much trolling. This article was written in 2014, the RAF ordered C-5s back in 2004. Is it really your position that Key Publishing wrote an article in 2014 portraying 10 years ago as if it were present day? Because that’s how your argument is coming across.

    http://s25.postimg.org/4qw3vyzov/going_digital_pg_3.jpg
    https://pocketmags.com/aviation-specials-magazine/eurofighter-typhoon
    http://www.deagel.com/Defensive-Weapons/AIM-120C-AMRAAM_a001164003.aspx

    2014
    Meteor has an NEZ three times greater than the AMRAAM it is designed to replace.

    On 11 August 2004, the UK MoD awarded Raytheon a $144 million contract to provide AIM-120 C-5 AMRAAM missiles as well as associated equipment and services.

    The Meteor is replacing the AIM-120C-5 also, not the 120A or B or anything else.

    I get that you would like to believe that it isn’t referring to the C-5 to muddy the waters for reasons of national commercial interests but there’s no other way of interpreting the above document, especially in conjunction with the other sources, which all post-date the C-5’s introduction.

    If I was writing about the AIM-120 in 1989 and referring to the AIM-7, would you assume I meant the AIM-7D used in Vietnam? Because that’s the equivalent of the stance you’re taking here.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126567
    Ryan
    Participant

    It is also simply more efficient to fly at a slower albeit sustained speed than to accelerate to very high speed and coast. Even if we limited ourselves to a discussion of solid rocket motors, a very long burning low thrust motor would be more optimal for a very long-range shot than a shorter burning motor of identical impulse.

    Essentially all modern air to air missiles expend their propellant in around 10 seconds because if you are forced to choose how to optimize your missile you can’t justify optimizing for long range shots at the cost of poor short to medium range performance.

    Meteor doesn’t have to make that choice because it is throttleable. The same missile can fly slower (and keep the motor burning longer) for a long range shot and in a medium range scenario can fly faster. The only thing it doesn’t do well are relatively short ranged shots because it is relatively slow off the rail, can’t reach as high a top speed, and almost certainly faces HOBS limitations because of its air breathing propulsion.

    For what it is designed to do it is pretty obviously the best missile in the world. A Eurofighter with Meteor and the fancy gimballed AESA will likely be the ultimate 4th generation fighter for BVR combat… excellent speed and altitude performance, an excellent radar that can look over the aircraft’s shoulder, and the fastest missile available for long-range shots. The only problem with all this is that while it is technologically awesome, it will also only become operational right around the time it is being surpassed by something else… (stealth aircraft)

    All that kinematic performance, on the part of the Eurofighter itself and the Meteor missile, doesn’t help much if you can’t reliably track your opponent at long range.

    In early testing it did look slow off the rail but in more recent tests it actually looked quite fast although maybe not as fast as an AMRAAM, couldn’t say.

    http://www.baesystems.com/en/article/successful-dual-firing-marks-major-milestone-on-meteor-programme-for-eurofighter-typhoon

    Vmax – yes there’s been a graphic suggesting it isn’t as high but is that in all cases, or in the case of a long range intercept, because remember the Meteor is throttleable? And longer burn at higher altitude could mean very long acceleration periods and very high speeds. At present all we know is M4+.

    What do you mean by HOBS limitations? How do ducts affect seeker FoV?

    The reliable tracking at long range will be provided for by F-35s and other stealthy unmanned assets (space assets?) in the future. I don’t think stealth aircraft surpass Meteor, if anything they complement it. Legacy 4th gen jets will operate alongside 5th gen jets in air combat for at least another 25 years, so come the 2020s the Meteor will allow the few 5th gen jets up front to target aircraft for the larger number of 4th gen jets hanging back carrying vastly more missiles. Equally, Meteor will provide 5th gen jets with the ability to achieve kills without risking IRST-detection or targeting, which could become increasingly sophisticated. It will also enable some of the slower 5th gen jets to have the upper hand against faster, higher altitude, more energetic targets, stealth or otherwise, front or rear hemisphere. In many ways it’s the perfect missile irrespective of some people trying to belittle it.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126637
    Ryan
    Participant

    Mica is most certainly a medium range missile, and it is one of the missiles the Meteor will be replacing. (not completely, but Rafales will certainly be replacing some of their Mica EM missiles with Meteor)

    The point is that the statement is referring to medium range missiles generally, not specifically to the AIM-120C5. You haven’t provided one shred of evidence to support your argument.

    It’s more of a short-range missile by modern standards. Let’s face it, 50km in a 160-320km MRAAM world is short range.

    I think I have provided cast iron evidence in this document written in 2014. It refers to AMRAAM. The UK AMRAAM at this point in time was the AIM-120C-5 and it is the AMRAAM the Meteor is replacing as suggested. There’s no other way of reading these words.

    http://s25.postimg.org/4qw3vyzov/going_digital_pg_3.jpg
    https://pocketmags.com/aviation-specials-magazine/eurofighter-typhoon

    Although I would contest that statements like ‘current MRAAMs’ are also intended to include all current MRAAMs too. And such statements as follows would be meaningless if comparing to a smaller, 160mm dia, 3.2m long weapon like MICA.

    https://mbdainc.com/farnborough-air-show-preview-mbdas-meteor-cruise-missiles/

    “AGAINST AN AGILE, EVADING TARGET, METEOR’S NO-ESCAPE ZONE—THE AREA WITHIN WHICH, IF A MISSILE IS LAUNCHED, THE TARGET CANNOT KINEMATICALLY AVOID BEING HIT—IS THREE TIMES LARGER THAN THAT OF A CONVENTIONAL SINGLE-PULSE ROCKET WEAPON IN A HEAD-ON ENGAGEMENT, AND FIVE TIMES LARGER IN A TAIL-CHASE.”

    in reply to: 2017 F-35 news and discussion thread #2126731
    Ryan
    Participant

    F-35 driver and his paperwork:

    Probably on the Mach Loop in Wales.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126809
    Ryan
    Participant

    VFDR propellant does actually contain a smidge of oxidiser to produce the throttleabble gaseous plasma, but the percentage of oxidiser is massively less than a solid rocket and compensated for by the ability to use a solid propellant rather than the less compact, less energetic liquid propellant of ram jets.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126828
    Ryan
    Participant

    Target can accelerate, climb. I would assume the the difference between WEZ and NEZ is smaller in a tail chase vs other target aspects, but not the same.

    In the case of a target at 20km, it likely can’t significantly climb, accelerate or turn, hence why the two V lines converge to one at 18km.

    http://www.aereimilitari.org/immagini/Armamenti/Aria-aria/AIM-120-AMRAAM/AIM-120-AMRAAM_09.jpg

    It would also have to be doing M2.0+ minimum. Range at 20km altitude in tail chase is 40km, 5x that is 200km. M6.0 (average speed) missile will take 300km to hit target at 200km receding at M2.0. And at 10km altitude, if we assume the nearer line is for a plane at M2.0, 5x 13km is 65km. At M4.0 average, it would take until 130km to reach that target, after which the missile is still doing >M2.0. So we’re already approaching the Rmax of an AIM-120D even at 10km, as opposed to 18-25km.

    I don’t speak Russian but I have a suspicion that the inner of the 3 lines in the frontal hemisphere is likely the NEZ and even that extends to 75km at ~16km (50,000ft). Three times that is 225km NEZ, which is already better than the AIM-120D’s Rmax considerably. So it looks like earlier comments made by others were not hyperbole.

    in reply to: Eurofighter Typhoon discussion and news 2015 #2126833
    Ryan
    Participant

    That could be a Mica, or an AA-12, or a Derby, or other missiles… all of those are current medium range missiles. You are insisting on picking the longest ranged version of the longest ranged missile operable at that time. Knowing how marketers work, it is more likely they picked one of the shorter ranged missiles to make their new product sound better.

    ‘Current MRAAMs‘, ‘current air-to-air missiles of its type’. Plural in all cases. ‘Of its type’ would also imply missiles of similar size, which would exclude a MICA, which is barely an MRAAM by modern standards. An AA-12 has similar range to an AIM-120C-5 and a Derby is simply far to obscure to be likely but the latest version of that also has a range of 100km as regards MBDA inc’s current statement. Specific mention of AMRAAM in Combat Aircraft in 2013 in conjunction with specific mention of AMRAAM Meteor is ‘replacing’. The RAF AMRAAM in 2013 was (and still is) the AIM-120C-5 and the missile Meteor will replace is the AIM-120C-5, not the A or the B, which had already been replaced at time of press.

    Actually the longest ranged variant in 2013 would be the AIM-120C-7 but since the article was written in an RAF context, it likely means the AIM-120C-5.

    in reply to: General Discussion #239974
    Ryan
    Participant

    Stop Press ! New irritating threats from of all places, the EU. I still can’t believe.

    Herr ‘Adolf’ Juncker in his starring role as agent provocateur, comments that due entirely to Brexit and the intransigence of the Brits, the English language so far as its use in the EU is concerned will be on its way out.

    And the chief negotiator got up and spoke in English directly after him.

Viewing 15 posts - 481 through 495 (of 568 total)