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LowObservable

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  • in reply to: F-35 News thread. Part Deux #2311870
    LowObservable
    Participant

    Maybe someone can inform us as to whether it’s normal to start operational-pilot training on a single-engine jet (as the JSF team wanted to do last fall before the DOT&E weighed in) before airstart procedures have been validated in developmental testing.

    in reply to: Gripen for Switzerland #2312319
    LowObservable
    Participant

    O & D is “organizational and depot”.

    Organizational is parts and manhours at the squadron base. Depot is deeper overhaul, whether in parts and manhours or in terms of $ paid to the manufacturer or a third-party contractor.

    If we were talking about your car, it would be gas and oil, plus filters, plugs, belts, hoses, brakes and tyres (that is, anything that has a design life less than the vehicle) and scheduled inspections, including labor.

    An airline would call it “direct operating cost” because it is directly related to the number of hours/cycles you fly.

    I doubt that it includes the costs of paying and training pilots, or the costs of upgrades (which in this digital era may be effectively mandatory since the manufacturer may stop supporting old Operational Flight Program software) and certainly does not include the cost of the aircraft, weapons or ground equipment.

    Where it gets tricky is that air forces and governments may well include some or all of the above to generate a “through-life cost”. This is great in terms of deciding what to buy, but very difficult to compare between nations, if only because military pay and benefits vary enormously.

    in reply to: Gripen for Switzerland #2314293
    LowObservable
    Participant

    M Pomme-de-terre, he is, how you say, le fan du JSF… And the phrase “guaranteed price and delivery”, he does not translate into the language of le programme JSF.

    in reply to: Gripen for Switzerland #2314444
    LowObservable
    Participant

    Dang. We’ll all be up s**t creek if that kind of rascally business practice gets around.

    in reply to: F-35 News thread. Part Deux #2314514
    LowObservable
    Participant

    S9 – The Norway report appeared to be talking about operating costs, not including acquisition costs, and I don’t know whether upgrades were included – possibly not as that cost is not related to the number of hours you fly.

    The 2008 comparison between Gripen and JSF was IIRC based on through-life costs – acquisition, direct op costs, upgrades. The latter is what killed Gripen because the Noggies assumed a very high figure for upgrade R&D costs through life for Gripen, borne entirely by Norway and Sweden, while the JSF upgrade R&D was spread over a four-digit fleet.

    in reply to: F-35 News thread. Part Deux #2314860
    LowObservable
    Participant

    If you take the middle of that range for the F-16 costs, you get:

    F-16: NOK620 million/10000 hours = NOK62 million/1000 hrs

    JSF: NOK995 million/8000 hours = NOK124 million/1000 hrs

    Jane’s is wrong! JSF CPFH is only twice that of the F-16, not three times as much. As for that Gripen thing, we said what in 2008? Look, shiny object over there….

    Wikileaks was never as accurate as in the US sum-up of Mr Barth Eide.

    in reply to: Pak-Fa news thread part 21 #2315858
    LowObservable
    Participant

    Russians have a pretty good record for solving problems in ways that outsiders do not expect. One-piece canopy is pain in задница, because problems fabrication, distortion, weight, ejection, birdstrike. How much worth to find alternative solution, assure electromagnetic continuity across windshield/canopy gap?

    in reply to: Gripen for Switzerland #2315860
    LowObservable
    Participant

    S9 – It might be argued that Gripen carries the highest risk because Rafale and Typhoon are closer to being off-the-shelf designs.

    As for the timing, that appears to be a compromise between the Swiss, replacing very old aircraft, and Sweden, which has quite new C/Ds.

    in reply to: Gripen for Switzerland #2323593
    LowObservable
    Participant

    “O this I have read in a book,” he said, “and that was told to me,
    “And this I have thought that another man thought of a Prince in Muscovy.”

    – Rudyard Kipling,Tomlinson

    The story by Le Matin – which has consistently been puffing anti-Gripen since Dassault lost – is about that well sourced, and the AvWeek quote is distorted.

    Like I said….

    http://www.air-cosmos.com/defense/berne-s-accroche-au-gripen.html

    in reply to: F-35 News thread. Part Deux #2325830
    LowObservable
    Participant


    Ha Ha!

    Tribes, old fruit – How do you think they reduced the price? It’s an average for the entire production run, you know, so it has nothing to do with learning lessons from LRIP, or rate changes.

    You can read the SAR and figure it out for yourself, because it seems that your old grey matter could use a spot of healthy exercise, but here’s a clue:

    Good luck as you leap into the $91 million JSF, strap in, power up the IPP and hit ENGINE START, because it’s suddenly going to be very, very quiet.

    Spud – HWIL labs are already part of the F-35 and AMRAAM programs.

    Ace! Because modelling and simulation have worked out so hunky-effing-dory for the program so far.

    Personally I remain a bit skeptical about passive ranging of a target outside the forward aspect and with high crossing rates. It’s easier to envisage an IRST-equipped jet doing it in the front aspect, with a quick weave maneuver.

    And if all it takes to do HOBS in a missile is a big motor, why the vectored thrust and/or all the fins?

    Throw in nightime, clouds, etc and a HMD is virtually useless.

    And EO-DAS does what in clouds?

    in reply to: F-35 News thread. Part Deux #2326287
    LowObservable
    Participant

    Tribes – If you read the SAR you’ll find that the 80 per cent unit cost increase is in base year dollars and inflation has been factored out, so your entire comment is off target.

    Spud – So now I’m relying on GPS and INS and datalinks and passive IR ranging to cue the radar seeker? That’s a lot of fusion and potential latency – missile tells airplane where it is, airplanes are sharing complex target imagery and sorting out that Lead’s blob is the same as Two’s blob, while everyone’s moving at 1200 mph crossing speeds, finally airplane works out target location and tells the missile where to go next, and eventually the missile seeker turns on and hopefully the target is the only thing in the scan cone.

    And nobody thinks it’s worth doing a couple of end-to-end tests with EO-DAS and a guided Amraam?

    If you search around for the DAS FPA supplier (L-3 I believe) and ferret around a bit, you’ll find the megapixel thing. When the company was Cincinnati Electronics they proposed the same FPA for a business-jet EVS. If you root around more in FPA design and hit some of the technical papers, I believe you will also find out that IR FPAs are hard to make with more pixels in a given size. I’m ready to be corrected if you find that the EODAS is 4MP, but that’s still less than the rez of the sensor in your phone.

    in reply to: F-35 News thread. Part Deux #2326673
    LowObservable
    Participant

    Spud –

    Can you point us in the direction of any serious demo that would have preceded that rather radical EODAS/AMRAAM combo?

    Because EODAS, for all its potential, has limited resolution (megapixel over a large field of view) and limited if any ranging capability. And I may be wrong, but surely AMRAAM’s seeker doesn’t have the field of regard of an IR missile (not 90 deg off boresight for sure). And is not the resolution of its seeker limited by beamwidth, determined by aperture (antenna size) and waveband?

    Coupled with the fact that AMRAAM’s got to come off the rail and get some speed before it can really crank turns…

    Pit bull in a gunny sack is one thing, short-sighted pit bull in a gunny sack is another.

    Maybe it’s doable, but it sounds like something you might want to demonstrate beyond the simulator.

    in reply to: F-35 News thread. Part Deux #2328249
    LowObservable
    Participant

    Tribes – If the Australian budget in 2002 contained enough fudge factor to cover an 80 per cent overrun in average, not LRIP, costs (whether flyaway or procurement) plus the acquisition of 24 SHs because JSF is late, then good on them.

    Some people got excited about the $1.5 trillion figure, but not many – it was mostly dragged up by LockMart as a convenient straw-man.

    The big cost issues today are procurement cost (can the program of record be executed within any probable DoD budget?) and operating costs, which are going to be much higher than advertised, although nobody can agree by how much. And on top of that we have no IOC dates, despite the fact that (on the original schedule) all three versions should now be operational.

    Rii – I have had the Norman Dixon book for years. Excellent.

    Aussie – You have an industry, which is probably one of the biggest marketing machines in the world, going head to head against the likes of LM etc.

    Are you seriously calling the defense media “one of the biggest marketing machines in the world”? Ye GODS, man.

    By the way, any reference I made to Concorde critics – Richard Wiggs, Andrew Wilson, Mary Goldring, R.E.G. Davies &c – as fanatics was quite ironic. They were gutsy people who called B.S. on the industry and took a hell of a lot of flak for it.

    in reply to: F-35 News thread. Part Deux #2329910
    LowObservable
    Participant

    “But to my mind, there is no sadder sight that that of a once-respected defence journalist handing out PR material on a company trade-show stand.”

    Powerful, the Dark Side is.

    I concur with your assessment of Mark Hewish, a great friend and mentor.

    in reply to: F-35 News thread. Part Deux #2329916
    LowObservable
    Participant

    Sorry, not understanding what sort of “credible independent analysis” you want.

    I’d say that anyone who was challenging the JSF cost and schedule as depicted before early 2010 counts as “credible” because they were right and the inside “experts”, the paid shills and the fans were wrong.

    If you want the historical facts on Concorde and its opponents, they’re out there for all to find.

    By the way, none of Concorde’s critics became rich or famous. If you want to make money in aerospace and defense media, boy, its “PA all the way”.

Viewing 15 posts - 706 through 720 (of 954 total)