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jessmo24

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  • in reply to: F-35 news thread II #2409733
    jessmo24
    Participant

    I know right?! Sh, Raf, and Typhoon all can do this! Am I right?

    in reply to: F-35 news thread II #2409893
    jessmo24
    Participant

    I stand by my opinion that we are moving into an era where multiple 5th generation aircraft flying at different vectors will begin to replace central AEW and intel assets. If 1b F-35 can see a missile launch 800 miles away then all f-35s in theater have this information. this amazes me

    in reply to: F-35 news thread II #2410069
    jessmo24
    Participant

    Photo Release–Northrop Grumman Distributed Aperture System (DAS) for F-35 Demonstrates Ballistic Missile Defense Capabilities.

    http://www.marketwatch.com/story/photo-release-northrop-grumman-distributed-aperture-system-das-for-f-35-demonstrates-ballistic-missile-defense-capabilities-2010-09-07?reflink=MW_news_stmp

    AN/AAQ-37 Electro-Optical Distributed Aperture System (DAS) for the F-35 Lightning II Joint Strike Fighter successfully detected and tracked a two-stage rocket launch at a distance exceeding 800 miles during a routine flight test conducted aboard the company’s BAC 1-11 test bed aircraft.

    Photos:
    http://media.globenewswire.com/noc/mediagallery.html?pkgid=7952

    Thats amazing. I wonder if DAS was cued to look that way or did it auto detect the launch. This has serious implications for mach 1.5 super cruising semi stealthy Russian fighters

    in reply to: UK to ditch F35B for Super Hornet? #2411470
    jessmo24
    Participant

    Except most of those 74 flights are not with BF-1 but the other 4 BFs and flying in CTOL mode only. BF-1 is doing the STOVL trials and finding all the problems as a result.

    Overheating due to unpredicted temps found in compartment and insufficient cooling, drive shaft linking the fan drive also not temp rated and a replacement part is not due till 2012. Actuator failures on the Doors needed to engage STOVL mode and the ione thats stumped them is the excessive heat on the down blast having too much of an effect on the surface it encounters.

    Then of course you also ignore that fact that the F-35B is not meeting the UK JCA requirement, i think you’ll find thats the concern for the SDSR at the moment, its over inflated price and for the aircaft that doesn’t meet the original spec.

    The MoD are either going to drop their expectations and give LM the time and money needed to get the F-35B operational, or they choose an alternative path…..

    geo, my bad.

    in reply to: UK to ditch F35B for Super Hornet? #2411473
    jessmo24
    Participant

    it was geo.

    in reply to: UK to ditch F35B for Super Hornet? #2411535
    jessmo24
    Participant
    in reply to: UK to ditch F35B for Super Hornet? #2411537
    jessmo24
    Participant

    I dont see anything in that article saying that the drive shaft wont get a replacement until 2012. I think you are speculating on a lot of things.

    While we are on the subject of flight test woes, the F-35C might not be in the clear either.

    A postscript to last week’s roll-out of the F-35C carrier variant: I noted a spoiler on the upper surface of the folded wingtip that I did not recall being mentioned before, and wrongly concluded it had been added to reduce carrier approach speed.

    The spoilers have been installed as insurance against wing drop, the aerodynamic phenomenon that proved so time-consuming to overcome on Boeing’s F/A-18E/F Super Hornet.

    blog post photo
    Jay Miller photo for Aviation Week

    F-35 deputy program manager J.D. McFarlan revealed the reason for the spoilers at the AIAA Joint Propulsion Conference in Denver yesterday (August 4). Wing drop can occur at transonic speed as a fighter approaches high turn rates, he says. One wing sets up a shock at a slightly different location to the other wing. This produces a lift gradient, one wing drops and the aircraft rolls in the turn.

    After the F/A-18E/F experience, Lockheed Martin conducted windtunnel tests specifically to look for wing drop. On the CTOL F-35A and STOVL F-35B, J.D. says, careful scheduling of the leading- and trailing-edge flaps looked to control the phenomenon, but on the CV F-35C the combination did not seem enough. So the decision was taken to add the spoilers, which pop up to disturb the flow over both wings and keep the aerodynamics consistent on left and right.

    J.D. says the leading- and trailing-edge flap scheduling has been flight-tested on the first F-35A, aircraft AA-1, and shown to work. The spoilers on the F-35C are described as a flight-test mitigation. If they prove not to be needed, they will be removed on production birds and the wing cavities “scabbed” over. J.D. says the hydraulically actuated spoilers are about 18in long by 5in wide and add only 10lb.

    Given the computational, windtunnel and flight-test effort that was required to analyse and overcome F/A-18E/F wing drop, Lockheed’s approach seems sensible to me. Just wish I’d asked the question last week…

    http://sitelife.aviationweek.com/ver1.0/Content/images/store/7/15/5798442f-0492-4b54-8f8c-56858e91e71d.Large.jpg

    I would certainly take a few actuator issues over a MAJOR wing drop problem. lets hope its not an issue.

    in reply to: UK to ditch F35B for Super Hornet? #2411542
    jessmo24
    Participant

    Please link or it didn’t happen.

    in reply to: UK to ditch F35B for Super Hornet? #2411602
    jessmo24
    Participant

    Can you not see the irony in how deeply you are contradicting yourself here?

    You are eulogising on the record of the fleet air arm, denigrating stovl, when it was a compromised stovl design that gave the fleet air arm their finest hour in recent decades!.

    F-35B is still a low observable, supersonic, BVR capable fighter with advanced sensor fusion. Its scarcely comparable, relatively, to a fighter obsolete at the start of ww2 like the Roc!.

    In reply to your comment about proper AEW. Its easier to field a few battery’s of double digit SAM’s than it is to field the capability to search and target a naval group at sea. Consequently we will need the ability to face advanced air defences more than we need hawkeye.

    I might also add that it seems like 5th generation fighters are moving away from using a dedicated AEW aircraft to a more network centered set up.
    if you have 1 awac its a large target. if you have 5 stealthy F-35s widely separated and on different vectors, then what 1 sees they all see.
    There was a lot of talk in a Lockheed presentation awhile back about F-22s/F-35s still lingering around after having used up there missiles to relay target data to legacy platforms.

    in reply to: UK to ditch F35B for Super Hornet? #2412075
    jessmo24
    Participant

    Nope those are on the CTOL F-35 A & C too and they have the advantage of extra capacity & range with the added baggage of a lift fan and numerous doors needed to open for STOVL flight.

    G

    1.So the C version is substantially cheaper? its cheap enough to make up for the difference in added maintenance training work ups in order to do cat launches? The how much does it cost to train, berth feed, and retire the extra 100 or so shirts that will need to run the cats? I predict that even if you do go cat you wont see any substantial savings. You think the stovl will cost 10 million more 20 million? are you really saving money in the long run?

    2. You keep only counting weapons loads internally what about external loads?
    even if you buy the C version you will still have to spend money to certify certain weapons on it.

    3. Yes in range and payload it is behind the F-35C. But its still well above legacy plat forms as stated above.

    4. Yes the C and A version can do the above, but as noted before they are limited when it comes to basing.

    5. I Disagree with the article. If I have 2000 SRBMs pointed at me its very likely that some will get through the best air defenses. It would have turned the Rand study of a few years ago on its head if rand factored in F-35Bs On standby in either heavy super shelters or on specially designated roads (remember that hot APU) F-35Bs mean you can never shut my run way down with missiles! you have to dominate the airspace and over fly My nicely parked F-35s then put a bomb through them.

    6. You seem to forget that the only thing what will beat a F-35 in BVR combat is a F-22 or another F-35

    in reply to: UK to ditch F35B for Super Hornet? #2412138
    jessmo24
    Participant

    Pointing out all of the down sides of stovl flight, while ignoring positive things
    Like stealth, survabiliy , BVR dominance, jamming, sensors, ect.
    Booo bad form!

    in reply to: F-35 news thread II #2412624
    jessmo24
    Participant
    in reply to: UK to ditch F35B for Super Hornet? #2412774
    jessmo24
    Participant

    For a stand off attack mission with F-18 wont the Brits still have to certify stromshadow, or buy Jassm or Jsow or jdam? How are you gonna penetrate potential air defenses with no stand off weapons? IMO if they give up the F-35 they are gaining range and payload but losing sortie generation rate, and penetration. I’m just pointing out that there are problems with the F-18 as a be all end all solution. And you will get to 2020-2025 and still need another jet.
    I would at least buy the F-35C version, that way you can be in the stealth game + have more range and payload than a F-18. The Brits will still have to certify weapons somehow some day no matter what they buy.

    in reply to: UK to ditch F35B for Super Hornet? #2412786
    jessmo24
    Participant

    Will the Brits press for source codes on the F-18 or the Rafale, like they did he F-35? will the respective companies be more willing to give them the goods?

    in reply to: F-35 news thread II #2413456
    jessmo24
    Participant

    but many 4th generation types can go into a shallow dive and achieve mach!
    Your making it seem like cruising at 1.5 isn’t significant. As if being able to barely hit mach 1 in a dive using military will all of a sudden put you in the same thrust to weight class as a Raptor. I don’t believe they classified it that way as simply a marketing ploy ( don’t get me wrong there is marketing involved), but because cruising at that speed is a step above what has been done before.

Viewing 15 posts - 286 through 300 (of 583 total)