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FBW

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Viewing 15 posts - 2,101 through 2,115 (of 2,935 total)
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  • FBW
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    yes, but then, you’re talking tactics, and I’m underlying capabilities (those that don’t match LM’s statements from years ago)

    what’s more, tactics depend also on the capabilities you have, an F-104 and a Mig-15 (or even -17) won’t be used the same way.. both could win a dogfight against each other, depending on what the pilots do with them… but if Kelly Johnson came and said “the F-104 turns as well as the Mig-17” would you believe him? There’s no way it does, but yet, with the F-35, even when it appears clearly that it doesn’t do what it was claimed to do, you guys keep saying “it does”… and eventually, throw in some “argument” beside the point to avoid the question.

    No- tactics are dictated by: the strengths of the aircraft, nature of the engagement (unlike many BFM set-ups, air combat does not begin with two aircraft passing each other in level flight at a set altitude and calling “fights on”), support, basically the unpredictable variations that occur in air combat.

    Start by asking what were the drivers for fighter performance that influenced fighter design, which ones are still valid? What has changed?

    If you look at most modern fighters, they were designed with the idea that high sustained turn rate and favorable thrust to weight ratio would give that precious 2 degree per second turn advantage over an opponent to set up a favorable firing position. High thrust to weight to gain a potential energy position over the opponent, separate and re engage (WVR combat). Those same parameters allowed for a fighter in BVR to impart energy to a missile shot and turn away from an opponents counter fire (all very important considering SARH missiles were still being used when most of the current generation of fighters were designed).

    When the USAF (and I’m sure others) studied the problem in the 90’s two factors became obvious:
    1. HOBS missiles and HMS make sustained ACM in close quarters obsolete. Consider Combat Cycle time: the time elapsed for an aircraft to change heading 180 degrees and accelerate back to speed. By traditional maneuverability measures, that would favor the aircraft with the highest sustained turn rate. Newer transient maneuverability measures would look at which aircraft can put it’s nose on target 180 degrees the fastest. The X-31, F-18 HARV, F-15 ACTIVE showed that High Alpha, Yaw, post -stall maneuvering did give some advantages. But even that would leave the “winning” fighter in a very vulnerable state.
    2. With modern active BVR missiles, getting “first look, first shoot” was even more important than with SARH missiles. Whatever the APA et al. crowd claims about “dodging” modern BVR missiles, aircraft put on the defensive is in a kinematic, sensor, and situational awareness disadvantage in having to react to an active AAM.

    As said earlier by LowObservable, or MSphere (and others), if all you need is SA and weapons, put a bunch of antennae on an B-1B, a couples of dozens of AMRAAMs, add some bombs, JDAMs, etc.. for fun and there you go… perfect “fighter” in that imaginary world for which the F-35 seems to be tailored for

    A fighter still needs to have fighter-like performance. It needs to be agile, possess good acceleration, agility, speed. To what degree do you optimize an aircraft to meet: range, speed, maneuverability, flexibility (a great low level bomber may not be the best design for an air superiority fighter, load carrying, sensors, size (hence expense), with the added requirements of LO and survivability that modern fighters need?

    The F-35 does have fighter performance- it does not possess the knife fighting ability of the Raptor or the Rafale- but it (may if the control laws are eased) have high alpha, nose pointing, roll rate that will make it competent in that area.

    It will not have the highest sustained turn rates that were optimized in the previous generation – but it’s values are not bad ( 4.6 g is the threshold- the heavier configuration was credited with a 4.95g sustained turn rate, actual figures for the current, lighter F-35? not in public domain) world beating? No. F-105 territory? One of the more absurd claims made by critics.

    Acceleration?- this has been beaten to death on this forum. It is worse than a clean F-16 and roughly equal to an F-16 with a DI of around 100. No one (outside of a few unrealistic posters who think that newer equals far superior) would call the F-16 uncompetitive in terms of acceleration.

    Slow?- The aircraft can exceed mach 1 at sea level and carry four AAM to 700Kts, or Mach 1.6. Sure, an F-15 can exceed that, does that make it unviable? Most aircraft don’t see that speed even in combat conditions, and none bar, maybe the Raptor, Pak-Fa, Mig-31 will maintain that speed for any length of time.

    All this while having a vast array of sensors, one of the newest and most advanced radars, massive computing power, extremely modern and capable IDAS, and whatever the critics claim about it’s stealth credentials, there is little doubt that it is less detectable than the previous generation. What would a user be willing to trade for a few degrees turn rate (that is not the deciding factor in ACM) less fuel? fewer sensors? sacrifice load carrying? larger size and hence more cost?

    Trade-offs….

    FBW
    Participant

    true, but only if you don’t get killed before the other guy runs out of fuel. If things turn out bad and you’re down to a classical dogfight, those “few degrees” can make the difference between being outright killed or trying to get home with some air refueling, or, if not doable, at least try to reach a more “pilot-friendly” zone to eject

    Whether a few degrees rate of turn matters depends largely on pilot skill. ACM is three dimensional, it is not fought on a single plane. Other factors matter as much or more than rate of turn- energy state (airspeed and positional), situational awareness, skill, weapons.

    FBW
    Participant

    so, let me get it straight

    the tester says “we tested the thing against an f-16, to see how it could do…”

    big mess

    LM says “yes, but no, in fact they aren’t finished, not the good block…”

    strangely, with an even more unfinished aircraft, LM claimed that it could fly loaded like and f-16 clean, there didn’t seem to be any problems with controls authority, AoA limits and whatnot

    If your BS-meter doesn’t ring an alert, I can’t help you there.

    First off, have you ever read a flight test report?

    Next, where does it say that “we tested the thing against an f-16, to see how it could do”. It doesn’t…and there is a very good reason for testing control law logic and departure resistance in BFM. The pilot will be rapidly moving control surfaces and abruptly applying power while oriented on different axis. The canned set ups at relatively low speed were perfect to test High alpha, pitch rate, yaw.

    They learned that (largely due to the TRO experienced in early testing with the F-35C) the control logic was too restrictive, and there is a margin of maneuverability that can be added back in (with relaxed stability designs, the fcs can be programmed, too much stability dampens agility and control response).

    The F-35 is not going to compete in the turn and burn compared to lightweight fighters, but overall agility should be pretty good when flight testing is done.

    FBW
    Participant

    wrong

    1/ you always carry as much fuel as possible when you start and/or refuel in the air… if you need maximum agility, the F-35 is stuck with all its fuel inside while the f-16 can still drop its tanks if needed

    More fuel= better, there is no way around this. You WANT to have sufficient fuel in a fight as kinetic energy is more important than a few degrees rate of turn. The fighter(s) with a lower fuel state cannot dictate the fight.

    2/ as seen with the leaked report, even with half fuel onboard, the f-35 can’t match an f-16 with two wet bags (and don’t try to sell me the “unfinished controls software” BS, the claims about its fabulous agility were made by Beesley and co years ago

    Believe what you want, it was a control law test. You want to believe it was about “testing” the agility vs. the F-16 go ahead. I’ll not correct your ignorance, just note it and move on. IF you actually want to research what the test was about- google is your friend.

    FBW
    Participant

    Of course.. there is no way to assess this figure accurately..

    During the A-G mission it would be at disadvantage, due to additional weight and drag. During the A-A mission it would be advantageous because it would not have any pod, at all, of course.. The possibility to strip down all the CFTs and pods and have a light and agile fighter is a big advantage which the F-35 does not have..

    MSphere…..come on. You are talking 85 more pounds than the Pirate and 200!!!! Less pounds the the OEPS-27. For that you gain air to ground capability. Just stop.

    FBW
    Participant

    As a comparison Pirate IRST weighs 105lbs.

    FBW
    Participant

    The system itself might weight 200lbs but the supporting structure for creating a cavity gets you another ~150lbs. In the end you end up not far away from what a Litening pod weighs (~450 lbs).
    ..

    EOTS weight was 191+lbs in 2008 with a goal of 181lbs. Your total installation weight Is a guess, as per usual.

    So, your saying that an aircraft carrying an internal IRST and slinging an external Litening pod would be advantageous? Maybe in your imaginary world where there is no parasitic drag, and targeting pods didn’t have airspeed limitations.

    in reply to: Russia moving tac air troops to Syria #2173761
    FBW
    Participant

    you only look at one side of map. what about the other side.
    how you are going to shot down Su-30SM/Su-34?. They have more electronic warfare power than EA-18G. and each of them can routinely carry 6 to 12AAM with radar ranges nearly equal to AWACS with greater loiter time so it can chose when to engage afterburner for optimum shot. your old F-16 are basically an MIG-21 are infront of them.
    No one will come to your rescue no matter how many self defense cards you play. Russia has capability to destroy Turkish and Israel airforce on the ground and that include the factories that assemble and upgrade fighters. you will be forever defense less and no external financial power will or can rehabilitate you. because of your poor performance in current conflict.
    Exact planning? who usually tell exact planning. they are in this war to reshape Middleast not just win this war. only wishfull thinking can write such posts.

    “In Russia, enemy fighter fall from the sky at the mere sight of the superior engineering of the Rodina” – for those not getting their worldview from sputnik news…. life goes on.

    It is a brave new world on the far side of the Dnieper these days. Not a knock on our very knowledgable and well rounded posters from Russia: TR-1 and Burkut

    in reply to: Russia moving tac air troops to Syria #2173794
    FBW
    Participant

    4 Grad rockets launched by rebels in #Latakia countryside land near Bassel Al-Assad Airport
    https://twitter.com/sayed_ridha/status/649988946433183744

    The western backed terrorists launched rockets on this area before the Russians had started their ops and it was no surprise that Russians started cleansing areas around Latakia to the displeasure of western allies.

    Strikes carried out on 2nd Oct 15 by Su-34 on workshop for manufacturing improvised explosive devices

    All five of the western backed rebels? In fairness at one time there were 50+ trained rebels (500 million dollars earmarked, unless one of them is John Rambo, probably a poor investment). Get a grip. there are no “Western backed rebels”, though there are many Gulf state backed rebels that the Western nations count- the majority of which are a shade of grey better than ISIS.

    edit- unless you want to count the various Kurds and Iraqi forces in the east of Syria.

    in reply to: General Discussion #243448
    FBW
    Participant

    He posts a lot on that ****ty “War is Boring” site, doesn’t he?

    That would be him

    @barnes- ain’t gonna happen. Even if there were an incident, my guess would be there would be some cashiering of theater commanders and lots of media indignation, and that would be the extent.

    in reply to: Could the U.S. remove Russia from Syria? #1806655
    FBW
    Participant

    He posts a lot on that ****ty “War is Boring” site, doesn’t he?

    That would be him

    @barnes- ain’t gonna happen. Even if there were an incident, my guess would be there would be some cashiering of theater commanders and lots of media indignation, and that would be the extent.

    in reply to: General Discussion #243460
    FBW
    Participant

    Because David Axe is the “the Daily Mirror” and “the Sun” of defense journalists. Though I hate to insult them by classifying him as a journalist.

    in reply to: Could the U.S. remove Russia from Syria? #1806680
    FBW
    Participant

    Because David Axe is the “the Daily Mirror” and “the Sun” of defense journalists. Though I hate to insult them by classifying him as a journalist.

    FBW
    Participant

    I think that its probable that a dedicated operator using the likes of the AN/APG-82/AN/APG-66(V3) and something like the LITENING 5 should have a real advantage over a pilot operating the F-35 systems in the air to ground arena. Both the radar and the LDP that the i´ve mentioned are arguably superior to the ones on the JSF and it has another brain/eyes solely operating them. And did i forget to mention ROVER?

    Off course that i might be entirely wrong, i dont have absolutely no experience on the matter.

    Another obvious thing, the F-15E is a niche aircraft in the USAF inventory, it counts for a very small % of CAS sorties in A´Stan,
    for A´stan.

    Cheers

    The F-15E is not a “Niche” aircraft in role or numbers. They outnumber the F-15C’s still active. They are taking on an expanded role as the number of active squadrons in the USAF shrinks.

    As far as sorties in A-stan , they flew 12% of CAS sorties in Iraq and Afghanistan between 2006-2013. That’s compared with 19% for the A-10 which is more numerous and supposed to have a higher sortie rate. The F-16 which is by far the most numerous fighter in the inventory flew but 33%. For the current Syria campaign, F-15E are flying 25% of the missions.

    http://aviationweek.com/defense/usaf-eyes-new-era-close-air-support

    F-35A will compose around 80% of that same USAF fleet, what this means is that almost EVERY flight will have associated costs that would rival the ones if that flight was made with a Strike Eagle.

    Again, the CPH of the F-35 is all over the place. JPO/CAPE coming in at 32K per hour, the last GAO report claims it could be higher. Most likely the F-35 will fall in between the CPH of the F-16 and the F-15E (closer to the “E”) which is expected considering the -35 is closer to the thrust and weight of the -15E.

    No argument on the targeting pod or the utility of having a WSO in the second seat. I would doubt that the APG-82 has the resolution of the -81. The APG-81 is a group up newer radar from back end to antenna.

    in reply to: USAF not F-35 thread #2173975
    FBW
    Participant
Viewing 15 posts - 2,101 through 2,115 (of 2,935 total)