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SpudmanWP

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  • in reply to: F-35 News thread. Part Deux #2283800
    SpudmanWP
    Participant

    Again.. it’s a “dash’, not the entire flight.

    Critical missing info on the above: What altitude, weight, and SC speed was being maintained at min AB?

    Maybe he’s talking about the LM/DoD definition of SC, ie Mach 1.5? Point is that you are comparing a vague reference to SC from Griffiths to a specific number supplied by O’Bryan and using it to call O’Bryan’s quote “spin”.

    btw, Thanks for once again demonstrating that “de-nile” is not just a river in Egypt πŸ˜‰

    in reply to: F-35 News thread. Part Deux #2283805
    SpudmanWP
    Participant

    Calling the F-35’s new “supercruise” ability as true supercruising is more of a “bending” of the accepted definition than a truth. To me, if it cannot take off, break mach using however much AB you please, and then sustain speeds > mach without afterburner until you run out of gas, then it cannot supercruise by the letter of the definition.

    Exactly. If it cannot sustain supersonic speed without afterburner, it ain’t supercruising. How it got to be supersonic in the first place is irrelevant.

    The LM VP said

    can maintain Mach 1.2 for a dash of 150 miles without using fuel-gulping afterburners.

    How is that not clear?

    @Tu22m:

    The LM VP said

    while not technically a “supercruising” aircraft,

    as it relates to the spec created for the F-22, ie mach 1.5+.

    btw, he said “maintain m1.2”, not at m1.2 or higher. In other words, it did not use AB to get to m1.6 then go MIL for 150 miles til it’s below m1.2.

    Read up on what a “dash” is people.

    in reply to: F-35 News thread. Part Deux #2283846
    SpudmanWP
    Participant

    A lot of stuff regarding the F22 and F35 is pure marketing BS.

    Just to mention a few current claims from the F35 camp (one of which was recent).
    F35 can supercruise: No, it turned out that to get above mach 1,2 the F35 needed to use full afterburner thrust to reach a higher mach number to be able to stay above mach 1,2 while using full dry thrust in 5 minutes. After that it can’t stay above mach 1,2 unless it uses afterburners again untill fuel runs out.

    1. Show an official quote where it says that it needs “Full Afterburner” to get to M1.2?
    2. Name one fighter (with official source) that claims supercruise without needing AB (or a dive) to get to its SC speed?
    3. Do you know the meaning of “Dash”? The 150 is used to describe a portion of the flight, not the total capability. This is similar to the F-22’s range that was reported as 410nm of which 100nm is a SC “dash”.

    And the list goes on about stealth effectiveness, costs, the EODASS with TV-helmet etc.

    Stealth isnt a silver bullet, it is a countermeasure against one threat.

    Did you forget that radar is PRIMARY means of detecting and attacking a fighter?

    in reply to: F-35 News thread. Part Deux #2283969
    SpudmanWP
    Participant

    Some people are under the misconception that the C-27s were headed to the US.

    But an Italian industrial source said on May 10 that the Australian-bound C-27s would be newly built aircraft not previously destined for the U.S.

    β€œThey are not ex- or former U.S. aircraft, even though the order is through the [foreign military sales] program,” the source said.

    β€œThere will be no issue with the support that Alenia will guarantee,” he added.

    http://www.defensenews.com/article/20120510/DEFREG03/305100001/Australia-Announces-Purchase-10-C-27Js-From-U-S-

    in reply to: F-35 News thread. Part Deux #2283976
    SpudmanWP
    Participant

    IIRC, The “Fiber Mat” is under the green stuff.

    in reply to: F-35 News thread. Part Deux #2283981
    SpudmanWP
    Participant

    LRIP 4 is where the first CNRP parts showed up which is a separate component from the RAM.

    The RAM as part of the composite panels has been there since mid-SDD.

    Here is AF-3 (an SDD pre-LRIP jet) going through RCS certification.

    http://i619.photobucket.com/albums/tt271/SpudmanWP/RF10_77653_SM_1267828237_2552_zps92c53411.jpg

    http://www.codeonemagazine.com/gallery_slideshow.html?item_id=1086

    in reply to: F-35 News thread. Part Deux #2285438
    SpudmanWP
    Participant

    Spudman, I never understand why couldn’t they use the tail nozzle on the B model to do vector thrust. I thought the rotating joints are independent? I think in theory you can swivle in any direction…at least up and down since that’s proven.

    Nozzle cannot swivel up (needed to pull Gs), to the sides (tail in the way), and cannot swivel down while in AB.

    There were two primary reasons that the F-22 got TVC.
    1. High altitude supersonic maneuverability with less dependance on traditional control surfaces.
    2. The need for the F-22 to point it’s nose in order to acquire a WVR target for the AIM-9M.

    Neither applies to the F-35.
    1. It’s not going to spend a lot of time > M so High-Altitude/Hi-speed flight is not the norm.
    2. EODAS allows the AMRAAM to be launched without the need to point the nose.
    3. Traditional TVC weighs too much to be of little benefit to the F-35.

    However, newer (and lighter) TVC technologies coming down the pike may get put into the F-35 in a later upgrade.

    in reply to: F-35 News thread. Part Deux #2285449
    SpudmanWP
    Participant

    Only the first few SDD F-35s don’t have the RAM.

    Every production F-35 has the RAM built into the composite skin.

    Here is a good comparison pic showing the first 6 SDD F-35As. Notice that the first two are all solid grey in color while the last 4 show the sawtooth edges of the panels. Also notice the auxiliary radar reflectors that are needed on the later 4 in order for them to show up on radar.

    http://dmn.wpengine.netdna-cdn.com/wp-content/uploads/2011/08/F-35A-Joint-Strike-Fighter-Edwards-Flightline.jpg

    in reply to: F-35 News thread. Part Deux #2285464
    SpudmanWP
    Participant

    The F-35’s RAM is part of the composite panels. It is not a simple paint/paste that has been used on previous generations of stealthy fighters & bombers.

    Due to this, the composite skin would have to be physically damaged (ie scraped, gouged, etc) before the RAM is degraded and the RCS increased. You will never see the RAM (but maybe the paint) on the F-35 peeling off like has been seen on previous generations.

    The LM VP’s point was that since no manufacturing process is perfectly smooth as small specks, ridges, etc will still be on the panel. Over time, air & dust will slowly polish the panel surface thereby reducing the RCS (by a small amount).

    Just in case you’re wondering, the F-35’s RAM CANNOT be washed off in the rain or saltwater spray.

    Also, many of the F-35’s panels & components can be accesses without the need to remove & reapply RAM thereby reducing labor cost and maintaining the RCS of the F-35.

    in reply to: F-35 News thread. Part Deux #2285638
    SpudmanWP
    Participant

    I’m quoting Janes

    Like I said, BS when gas costs $3500 per hour.

    in reply to: F-35 News thread. Part Deux #2285675
    SpudmanWP
    Participant

    If that < $5000 per hour is for older versions of Gripen based on ’80s data then stop comparing it to the F-35 unless you want to bring those numbers up to date.

    Or did you (Ob) think that ignoring 30 years of inflation and ignoring the current cost of systems was an intellectually honest argument. πŸ˜‰

    in reply to: F-35 News thread. Part Deux #2285697
    SpudmanWP
    Participant

    How does a Gripen cost < $5000 per hour when it’s using at least $3500 per hour in fuel alone?

    in reply to: F-35 News thread. Part Deux #2285761
    SpudmanWP
    Participant

    VLO strikers also are a good deterrence because potential enemies must either spend a LOT more money closing all the gaps in their IADS or leave all their hi-value assets at substantial risk.

    in reply to: F-35 News thread. Part Deux #2285765
    SpudmanWP
    Participant

    Who? Lockheed? USAF?

    Yep, along with all the JSF Partner personnel wh actually test and evaluate the program instead of sitting on the sidelines pooh-poohing based on a complete lack of knowledge.

    Flashy electronics and reduced X/Ku-band signature aside, the F-35 has precious little going for it.

    “Flashy electronics and reduced X/Ku-band signature” are exactly what is going to keep you alive, unless you somehow think you can outmaneuver a S-300?

    Pretty much the same chance as the F-35 without heavy EW support. Zilch.

    You might want to tell that to the F-117 pilots who did it every day in GW1 and to the F-22 pilots who do it whenever they are at Red Flag.

    in reply to: F-35 News thread. Part Deux #2285795
    SpudmanWP
    Participant

    Anyone believes an F-35 will ingress into a modern IADS without heavy EW support and escorts is simply living in a dream world.

    Anyone with even a rudimentary grasp of radar observables will already be well aware of reality.

    They are the same people who actually know what they are talking about like what the F-35’s capabilities actually are (not just going off public info/pictures).

    btw, that graphic is vs the typical adversary and not EVERY adversary.

    Exit question: If the F-35 cannot handle it without “heavy” EW support, what chance does a 4th gen asset from a country that does not posses “heavy” EW support have? The last time I checked only the US and Australia have it in the F-18 Growler.

Viewing 15 posts - 2,896 through 2,910 (of 4,849 total)