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Spitfire9

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Viewing 15 posts - 721 through 735 (of 2,413 total)
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  • in reply to: F-35 News, Multimedia & Discussion thread (2015) #2225198
    Spitfire9
    Participant

    With all due respect, I think You didn’t catch something important here:
    -1st: This is a gov monitoring program that trace its roots at a political level. They have merely always been dephased in time and number of occurrence. This is normal. They are not going to employ the same nbr of technicians and engineer as LM does! As I have said on an other forum, the way you observe affect what you see. Here they have been focusing too much on the details (due to the original needs and intentions), parting things that were not meant to be or had a degree of synergy (see Eisenberg principle).

    -2nd: They are not fixing the prototypes/Pres-series/Intermediate bloks. Hence they are not tracking data of those. They are focused on the series. The one that would end to be built in large number. And this, as always during such a process, is a floating standards. Some form of it are in the prototypes, some flying in the initial blocks and some on the production line… This is what they are after.

    I still don’t understand. According to the report, as Obligatory says: “Failures of the older component were not being counted in the metrics at all anymore, but flight hours from all 100 aircraft were counted.”

    Why are the flight hours from the aircraft using the “unfixed” components being used to calculate the performance of the “fixed” component? How could any stats indicating performance of the “fixed” component be valid? Stats are calculated to inform. It looks like these stats are designed to misinform. Pointless exercise IMO.

    Something else:

    The OT&E report also found other uses of questionable metrics to boost F-35 reliability, notably in how improper scoring resulted in “higher than expected [Mean Times To Repair] values.

    “Discrepancies for which maintainers have to attempt multiple solutions before finding a true fix are being re-scored as a single event, while in the past they were documented as multiple repair attempts, each with its own MTTR.

    “The individual MTTRs for these attempted repairs are now rolled up into the single, re-scored event,” thereby artificially reducing the number of reported failures although there has been no reduction in the number of failures.

    What is that all about?

    I notice that the changes referred to in the article all improve the reported performance of F-35 at a stroke. Funny that none of them impair the reported performance of the F-35, isn’t it?

    in reply to: Indian Air Force Thread 20 #2225305
    Spitfire9
    Participant

    They would have to dump the russians first. They wouldn´t do this. They were already comitted with it.

    I´m sorry but HAL is incompetent and we see this every day. HAL participation as a major partner would only disrupt the schedule. HAL would represent a headache to Embraer. It wasn´t worth.

    Would Embraer assume the risks of a HAL made KC-390 just like the indians are demanding from Dassault?

    I don´t think so.

    Isn’t it becoming obvious to GOI that an additional, alternative, competitive production facility to HAL is required? I wonder why this did not occur to them 5/10 years ago.

    in reply to: F-35 News, Multimedia & Discussion thread (2015) #2225309
    Spitfire9
    Participant

    OT&E employs a Joint Reliability Maintainability Evaluation Team. Being “joint” means it is composed of military operational maintainers, military acquisition engineering and contractor engineering. The JRMET is chartered with examining the circumstances of each failure when it occurs to determine “chargeable/non-chargeable”. Chargeable failures require a root cause analysis and corrective action. The JRMET assigns a “fix effectiveness” to each corrective action. Once a fix is determined to be effective, even if not yet fielded, the counting of additional failures caused by the “fixed” failure mode is halted. Its engineering not slight-of-hand and has been used on various aircraft OT&E programs for decades.

    The JRMET, and more, is outlined in AFOTECPAM 99-104, which can be found by Google search.

    I think I get the gist of the methodolgy used: basically when a component fix is deemed effective, failures for the preceding unfixed component are no longer logged. According to the report, though, as Obligatory cites: “Failures of the older component were not being counted in the metrics at all anymore, but flight hours from all 100 aircraft were counted.”

    I am not a statistician but I am an analyst programmer by profession and sometimes need to produce statistics. If I had come up with an analytical method whereby part of one set of data was discounted (pre-fixed component failures in this instance) but the related data (time element associated with that discounted data set) continued to be used in calculating the failure rate per hour of another data set (fixed component failures in this instance), I would have been sacked on the spot by any responsible principal. Of course, if it were a case of middle management employing me on the basis of engineering ridiculous and misleading stats for presentation to senior management, my middle management principals would have been more than happy for me to prepare such nonsense but you know what? I would have told them where they could go. I would rather use whatever talents I may have in a less asinine manner. Polished nonsense remains nonsense. Period. There is far too much of it where the F-35 is concerned.

    in reply to: Dassault Rafale, News & Discussion (XV) #2225396
    Spitfire9
    Participant

    Egypt could become the first export customer for Dassault’s Rafale fighter, after a financing package was tentatively agreed this week by the two governments. The deal will be signed if and when Egypt can make a €500 million down payment.

    http://www.defense-aerospace.com/article-view/release/160813/egypt-close-to-order-for-24-rafales.html

    in reply to: F-35 News, Multimedia & Discussion thread (2015) #2225413
    Spitfire9
    Participant

    USN to slow down F-35C deliveries?

    The U.S. Navy has reduced its planned buys of the Lockheed Martin F-35C Joint Strike Fighter by almost one-third over the fiscal 2016-2020 Future Years Defense Program (FYDP), while committing almost $800 million to new standoff weapon developments and canceling the only missile program that was primarily dedicated to the F-35C. All the new developments are part of the fiscal 2016 presidential budget proposal and constitute the first move by a U.S. service to slow down its JSF procurements.

    http://aviationweek.com/defense/f-35cs-cut-back-us-navy-invests-standoff-weapons

    Would this affect price cuts for F-35’s in general, pushing them still further to the right?

    in reply to: Military Aviation News-2015 #2225424
    Spitfire9
    Participant

    Quick work: Korean Air agree to shack up with Airbus DS this week and in a few days are in a position to submit a bid?

    The Korea Times newspaper, quoting unidentified sources, said the teaming agreement had been made verbally earlier this week and that the bid for the military’s KF-X program will be made on Monday, the submission date for bidders.

    in reply to: F-35 News, Multimedia & Discussion thread (2015) #2225431
    Spitfire9
    Participant

    Playing silly games with F-35 reliabilty indicators. Stupid thing to do: massaging data to distort stats merely erodes your credibility and the last thing this program needs is for things to be done that further erode its credibility.

    http://www.defense-aerospace.com/articles-view/feature/5/160338/f_35-program-massages-flight-test-results-%282%29.html

    in reply to: Can fly by wire Airbus airplanes recover from a stall #2228386
    Spitfire9
    Participant

    I have never heard of an aircraft being unable to recover from a stall (with the exception of an aircraft being pushed beyond its limits eg very nose high stall when testing the BAC1-11 about 1963).

    Stall recovery is part of flight testing an aircraft before it receives certification, so yes, all Airbus models would have been stalled. And since you need to recover to avoid crashing (unless you’re just above the runway), yes they have all recovered from stalling.

    in reply to: TF-X (Turkish indigenous fighter) news and dixcussion #2231361
    Spitfire9
    Participant

    They do own tooling to produce F100’s.

    That’s on the production side, isn’t it, rather than development? I have no idea in which way they want to change the EJ 200. More power? Does anyone on this forum know?

    in reply to: TF-X (Turkish indigenous fighter) news and dixcussion #2231409
    Spitfire9
    Participant

    The link in the post above mentions “The MoU covers the creation of a steering committee and various working groups to help establish a consistent reporting and development mechanism for the joint work.”

    Is there a Turkish company with sufficient technical knowledge to make a constructive contribution to developing an EJ 200 derivative? The reference to “joint work” suggests it will not be a case of Eurojet doing all the development work itself (if this proposal progresses).

    in reply to: Dassault Rafale, News & Discussion (XV) #2231572
    Spitfire9
    Participant

    You dont seem to get the point. Hitherto, these legal agreements were not there to the desired level. The so called TOT deals were not exact enough on ensuring vendor compliance & depended too much on political contacts to see things through.

    either (a) get the best lawyers to draft your purchase contract

    You dont seem to get the point. Hitherto, these legal agreements were not there to the desired level. The so called TOT deals were not exact enough on ensuring vendor compliance & depended too much on political contacts to see things through.

    or (b) deal with a supplier that is not so mercenary, one with a spirit to get things done successfully even if that involves a bit of give and a bit less take.

    I imagine that dealing with suppliers of military hardware must be something of a nightmare per se. Suppliers do not appear to be the sort of companies that see the buyer as a partner whose welfare is to be considered in a buyer/seller partnership.

    in reply to: F-35 News, Multimedia & Discussion thread (2015) #2231918
    Spitfire9
    Participant

    F-35 missed key software testing goals in 2014

    The Lockheed Martin F-35 Lightning II missed key software testing milestones necessary for the US Marine Corps to field combat-ready jets while those already delivered remain unreliable and difficult to maintain, says a new report by the US Defense Department’s director operation test and evaluation (DOTE).

    The programme was heavily focused on completing the testing necessary for the fleet release of software iteration 2B, which will enable the Marine Corps to declare initial operational capability in 2015 with what the report calls “limited combat capability.”

    “Slower than planned progress in mission systems, weapons integration, and F-35B flight sciences testing delayed the completion of the testing required for Block 2B fleet release,” the report says. “The program now projects this to occur by the end of January 2015, instead of the end of October 2014 as was previously planned.”

    http://www.flightglobal.com/news/articles/f-35-missed-key-software-testing-goals-in-2014-408176/

    in reply to: Dassault Rafale, News & Discussion (XV) #2232044
    Spitfire9
    Participant

    Dassault cant be legally held liable for anything HAL does. What HAL is asking for is a clear commitment from Dassault that it hold up its end of the bargain in terms of deliveries of documentation, spares, jigs/fixtures etc for the program.

    That’s a bit like asking Dassault if they really mean to adhere to a contract they are signing. For crying out loud, it’s a legal agreement. Both parties are bound by the terms and conditions of a contract when they sign on the dotted line. The question you should ask yourself if you don’t think the other party is going to adhere to the contract is this: should I be making a contract with this other party?

    in reply to: Dassault Rafale, News & Discussion (XV) #2232269
    Spitfire9
    Participant

    Its not in the RFP its in the Original Tender/Air Staff Qualitative Requirements (ASQR).

    The GoI require them to abide by the process where they got to be L1, one of the gates to getting there was the ASQR if they didn’t accept that ASQR they would not have progressed.

    Dassault get to L1 and then say the stuff they said they would comply with in the ASQR isn’t relevent now because its not in the RFP.

    So while Dassault are technically correct that condition isn’t in the RFP, its has been part of the conditions for entry to and part of the evaluations of the MMRCA.

    So do they want to sell it to India bad enough.

    If you are correct in what you claim, do you know if there was a clear stipulation in the RFP that the MMRCA supplier had to meet the ASQR? If there was not, that’s a hell of an oversight. One reason for getting everything required written down clearly is so that both parties clearly know what is required (and implicitly, what is not).

    If it is really the case that the proposal is for a supplier to take responsibility for the performance of an entity controlled by the customer, that is a big mistake in my view. It diminishes the need for the entity owned by the customer to perform and since the performance of the customer-owned entity is imperative to the success of this project, that makes no sense at all to me. HAL is owned by GOI. If HAL did not perform, kicking Dassault would be pointless, since Dassault has no control over HAL. GOI does.

    in reply to: TF-X (Turkish indigenous fighter) news and dixcussion #2232533
    Spitfire9
    Participant

    Recent development: Turkish defence company ASELSAN signed a collaboration MoU with EuroJet GmBH. The MoU covers cooperation on engine control and monitoring systems and software development.

    This news may signal that EJ200 (or EJ230?) was selected for the TFX. In his press statement after the Defence Industry Executive Committee meeting earlier this month, Prime Minister announced that a twin engine configuration was selected for the project.

    Interesting. I don’t recall. was the possibility of trying to develop an indigenous engine ruled out? If it was, Eurojet would not be helping with that.

Viewing 15 posts - 721 through 735 (of 2,413 total)