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Cherry Ripe

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  • in reply to: Air-Britain Photographic Images Collection? #881937
    Cherry Ripe
    Participant

    The slow running issue is being addressed by Air-Britain, but this will take longer to fix. The number of images on ABPIC is well over 400,000 and the application, now several years old, was never designed for such volumes, so alternative, affordable options are being considered.
    G-APDK

    I don’t think the number of photos is relevant ( 400k is peanuts, frankly ).

    Just loading the home page, at 07:50 on a weekday, took 34 seconds, without accessing the actual image gallery; just seven small static thumbnails on a basic HTML page. Edit: that’s on an 80 Mbps connection.

    The metric we use at work is that each one-second delay in page loading costs 10% of visitors to abandon. By 20 seconds, we’d be out of business.

    Do let me know if you’d like any profiling assistance.

    in reply to: Small Air Forces Thread #16 #2216053
    Cherry Ripe
    Participant

    Rare as hen’s teeth – Iraqi AF EMBRAER Tucano (#6743 and #6707)

    Very nice!

    How many Tucanos did Iraq actually operate? The number published through the 1980s was “80+” but I think that was based on the number of CKD kits supplied to Egypt; not sure how many of those were actually assembled.

    in reply to: USAF T-X #2216055
    Cherry Ripe
    Participant

    Swerve, do you think this will be the point where BAE decide to go back to the drawing board and update the airframe of the Hawk – if they want to continue to build aircraft, the trainer/light fighter market has to be competed in? Cant let the South Koreans and Italians have it all?

    Obviously I’m not Swerve, but…

    The Hawk airframe is at its aerodynamic limit, perhaps a little beyond. It is a botch of hacks and fixes ( vortex generators, SMURFs, strakes ) all of which were added to make handling acceptable for the role but add drag.

    Compare to the Alpha Jet airframe; a similar vintage, but aerodynamically clean and apparently handles beautifully.

    There’s no capacity really left to ‘redesign’ in the Hawk airframe, short of redrawing it entirely. But as Swerve pointed-out up-thread BAE aren’t in the airframe business anymore, they do ‘systems’. So I expect they’ll drop the Hawk and go forward for export sales with Northrop-Grumman, should they win T-X. Otherwise exit the trainer market.

    in reply to: Augusta Westland tries to block the UK AH64E #2216422
    Cherry Ripe
    Participant

    The AW offering is likely to be more than twice the cost of Boeing FMS (50 new builds for £20M), and delivered many years later.

    That quoted Boeing price ignores the fact that the straight Block III is unsuitable for maritime operations from carriers, which is a key capability for UK, and also excludes UK-specific avionics. That all has to be redesigned and integrated.

    The price also excludes Government Furnished Equipment: engines, TADS / PNVS and Longbow.

    The oft-quoted $44 million for the WAH included all that.

    The problem is compounded by the fact Boeing will stop making spare parts for the AH-64D in 2017 which means the bill for the ‘D’ will skyrocket.

    No, the 64D Block II will continue in US Army service until 2025 / 26. Conversion to Block III will be prolonged.

    AW has a license for all parts production. So what exactly is the problem?

    Overseas users will still be flying 64D Block I ( and earlier! ) after 2017, so there will be a support chain.

    in reply to: Augusta Westland tries to block the UK AH64E #2216478
    Cherry Ripe
    Participant

    There’s something very suspicious about the MoD’s haste in this matter.

    The Block I-and-a-bit to which the WAH is similar will indeed be technically obsolete by 2017, with the US Army sitting on Block II and starting upgrades to Block III ( which will take 10 years ).

    But interestingly, other than the Netherlands no other AH-64 users are moving to upgrade to Block II. Not even Israel, that could do it for ‘free’ through FMS. In fact they’re still operating some plain-jane 64As!

    The MoD ruled-out an upgrade as too expensive, at £10 million per airframe. Better to buy new at twice the price and then add the UK bits again… plus marinisation.

    I suspect there is a deeper undisclosed issue; perhaps the WAHs are truly knackered after 15 years of cannibalisation. Or the MoD wants to gradually cut AW out of the support chain.

    in reply to: Why Have We Heard of the Boulton-Paul Overstrand? #884778
    Cherry Ripe
    Participant

    The Overstrand was massively hyped* in the mid-1930s, in the press and at air shows, as The Most Modern Bomber. It could out-manouevre contemporary fighters yet was as easy to fly as a Moth, they claimed**.

    Then came those marvellous stall turns half rolls and loops and the
    sickening stall for which the multitude of Overstrand fans had
    been waiting..

    It even demonstrated air-to-air refuelling at a Hendon show, I’m sure people were fainting with excitement at how the RAF were thrusting into the future with this fabulous machine.

    I suspect that much of our literature has been influenced by that, particularly as authors who were exposed to the publicity as young pups. And then their successors noticed the column-inches that had been dedicated to the Overstrand and assumed it had been significant, so…

    * though naturally they didn’t use that term back then
    ** In fact, much of the same stuff seems to have been regurgitated in the 1950s re: Vulcan, with similar effect on the public consciousness.

    Cherry Ripe
    Participant

    Seems you can apply for a free licence http://www.trademark.af.mil/usagerules/

    Interestingly, it appears that the star-and-bar(s) isn’t trademarked… see page 22:

    http://www.trademark.af.mil/shared/media/document/AFD-120213-033.pdf

    See page 8 for the symbols that are trademarked; mostly twee except for the command and ANG shields.

    Cherry Ripe
    Participant

    8 engines is the only sensible option.
    4 bigger engines come with a lot of problems as you mentioned. One engine out is another problem with the B-52’s tiny rudder. To sort out all these issues would require major design work and thus is a no-go imho.

    You should tell Boeing and the USAF that, they thought they had the aerodynamics and process worked-out for the four-RB211 proposal; auto-rudder responding to any engine-out yaw.

    And if there wasn’t money for that, well just make the pilot earn his salary:

    The task force suggested in the event differential thrust becomes an issue,
    instituting a standard operational practice of taking off with engine throttles set at the
    single engine failure power setting would mitigate the problem, as well as save engine
    life, provide additional power for climb after gear and flap retraction, and make engine
    failure a non-event
    .

    Will you be correcting them?

    Cherry Ripe
    Participant

    The -30s have slightly lower drag than both shorty lengths ( the basic military length and the civil -20 ).

    Not enough to account for the discrepancy but enough that Lockeed documented it.

    in reply to: Once Again The USAF Is Looking To Re-Engine Its B-52 Fleet #2219589
    Cherry Ripe
    Participant

    Hard to believe the best-funded air force in the World has to go crawling for public-private funding to re-engine the Buffs.

    Anyway, I believe the wing needs the outboard engines to provide bending-relief.

    I’d propose four F117s ( PW PW2040 ) at 7,100 lb dry-weight each providing commonality with the C-17 fleet and plenty of commercial spares.

    in reply to: Bears near Cornwall #2220750
    Cherry Ripe
    Participant

    I am amazed that these were able/allowed to get through multiple European airspaces.

    What do you propose that the NATO interceptors do? Open fire on aircraft in international airspace? Ram them?

    These particular Bears passed just over 20 miles off the southern coasts, well outside national airspace. They caused some consternation to air traffic control but aren’t anything more than a nuisance. Certainly less dangerous than the reconaissance ballons that the CIA used to send over Eastern Europe by the thousand.

    I heard on the radio today that it was normal for the Bears to fly west of Scotland & then south over the Irish sea during the cold war. Absolute rubbish! They would not have got that far.

    Of course they did, they used to plod down through the GIUK and wait until the Icelandic F-15s or Leuchars Tornados fell-back. And then they’d keep trucking onwards. There was no way to prevent them from doing so.

    Aren’t you aware that the Falklands task force was followed all the way from the Bay of Biscay to the South Atlantic by Tu-142s…?

    I shouldn’t really say this, but it’s great to hear the combat air patrols back in the evenings.

    Keeping you safe from the latest threat that the Government tells you to fear…?

    The real question is why the MoD is so keen play-up these routine missions and why the RAF keeps wasting money ‘intercepting’ them, when all they do is tag alongside the Bears and burn fuel. Ah yes, there’s a UK Strategic Defence Review due this year…

    in reply to: Small Air Forces Thread #16 #2221105
    Cherry Ripe
    Participant

    Thanks for the link provided.
    Really love the Magister pictures.

    Looks like the Magisters and L-29s shared the same serial numbers ( U-1__ ). I assume from the mono-versus-colour photos that the L-29s replaced the Magisters?

    in reply to: Hindsight: Which countries should've adopted the F-14? #2221419
    Cherry Ripe
    Participant

    Both Canada and Turkey seriously considered buying outright the Iranian F-14 fleet after the Revolution; the aicraft, spares and weapons were all up for sale

    It would have made a much more sensisble interceptor for Canada, Australia, and the UK RAF than the compromises they eventually received ( though without Phoenix of course, much too pricey ).

    in reply to: Small Air Forces Thread #16 #2222279
    Cherry Ripe
    Participant

    Seems rocket pods…

    Yes, 12-round MATRA 37mm pods. Which have been withdrawn from service now, leaving the Cessnas unarmed. I think they still have the gunsight though.

    Edit: found this history of the 172s in Irish service.

    http://www.ipmsireland.com/IACRocket.html

    They are still kept busy, doing paratroop training and escort of cash delivery vans to remote rural areas, amongst more mundane tasks.

    in reply to: should USAF stuck to F-14 over the F-15? #2222502
    Cherry Ripe
    Participant

    The F-14 proposal to the USAF was as a replacement for the F-106 with Air Defense Command, not F-X for TAC.

    Two completely different roles for two different Commands; there was no suggestion that the F-14 would have been bought instead of the ’15 for TAC.

Viewing 15 posts - 211 through 225 (of 480 total)