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Jō Asakura

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Viewing 15 posts - 481 through 495 (of 1,223 total)
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  • in reply to: Pak-Fa News Thread part 22 #2240472
    Jō Asakura
    Participant

    Another World first for ‘Type 30’, a BLING (don’t think F136’s counts):

    Лопатка турбины – это абсолютно уникальное изделие. Она представляет собой сложную пространственную конструкцию…

    The turbine blade- is an absolutely unique product. It represents a sophisticated spatial design…

    http://www.findpatent.ru/patent/247/2478796.html
    http://www.findpatent.ru/patent/246/2467177.html

    The blade’s a single-crystal nickel ‘super alloy’ with several exotic constituents including W, Re, Ta, Mo- developed in conjunction with MMPP ‘Salyut’ (ММПП “Салют”).

    in reply to: Pak-Fa News Thread part 22 #2241571
    Jō Asakura
    Participant

    Oh dear, if there’s one thing worse than a liar, it’s a confused liar in denial. The very reason it’s BLISKed onto a metal base, demonstrates it’s an MMC.

    Actually Homer, I’d like to thank you for spurring me on to learn more about the range of thermoplastic composites and the associated fabrication technologies, their utilisation is set to grow exponentially this coming decade in several industries with Russia and Asia leading the way. This research has proved valuable in aspects of my work, such as prepping investment portfolios. So thanks.

    Homer, when you figure out how to weld your *CMC* turbine blade on to a heavy-metal base ring, we’ll talk- hopefully your English comprehension would have improved by then, your Russian certainly won’t have.

    Until then goodbye.

    in reply to: Pak-Fa News Thread part 22 #2241784
    Jō Asakura
    Participant

    Oh dear, on top of everything else, a liar as well.

    in reply to: Pak-Fa News Thread part 22 #2241885
    Jō Asakura
    Participant

    Don’t worry I’ve long known sources & references aren’t your currency. Let’s assume there’s an outside chance you’re right on the CMC (albeit extremely remote to non-existant judging by your previous record), how do you propose welding the CMC turbine blade to the hard metal baseplate in that picture? Needless to say the correct answer renders your comedy placards and claims irrelevant (again).

    Now you’re drowning in bullcrap.

    in reply to: Pak-Fa News Thread part 22 #2242691
    Jō Asakura
    Participant

    Just beat it…

    …but you presented titanium, wide chord, hollow fan blades as a ‘solid fact’, evidenced by a 6 year old graphic (remember the poorly put together ones on a website that never once mentioned your ‘solid facts’ but you said “how official do you want it?”).

    Then your ‘solid facts’ disproved ‘real-World’ developments of FSW for MMC, temp. & strength characteristics of thermosets vs. thermoplastics, thermoplastic utilisation in the aviation industry and engines, FSW for thermoplastics etc. NOT!!

    Having buried this thread under an avalanche of bull crap those ‘Solid facts’ (that were specific only to you), led you to charge off a cliff……and now your response is “beat it”?! Incredible!

    Would you be so kind as to ask the MODs to reinstate my “cold section, you idiot” post because a certain recent revelation has demonstrated everything in that post to be a ‘real-World fact’ (nothing lost in ‘parsing’). I checked with the forum codes and the term ‘idiot’ would only be an insult if it was untrue, also shouldn’t be a problem because they left that offensive comedy photoshop of yours containing the word ‘b*****d’ on. Thanks.

    I also took the time to find you an avatar, I thought it most fitting as you both have a comparable understanding of engineering and the same level of kindergarden antics. Say thank you.

    http://i.uwants.com/u/customavatars/3144724.jpg

    For everyone else, this is FGUP TsIAM’s (ФГУП ЦИАМ) recent MMC turbine blade development. Evidently it’s a BLISK, definitely not CNC or LFW, so how?

    [ATTACH]213422[/ATTACH]

    http://www.findpatent.ru/patent/242/2424884.html

    in reply to: Pak-Fa News Thread part 22 #2243336
    Jō Asakura
    Participant

    In aerospace engineering terms, what is a fighter’s ‘cold section’ of a low by-pass turbofan composed of?

    in reply to: Pak-Fa News Thread part 22 #2243345
    Jō Asakura
    Participant

    JSTVCVWDE09898OCD, something may have got lost in all that ‘parsing’, but in aerospace engineering terms (as opposed to kindergarden jackassery), what is the ‘cold section’ of a fighter’s low by-pass turbofan composed of?

    in reply to: Pak-Fa News Thread part 22 #2284436
    Jō Asakura
    Participant

    Well, well, …

    Сегодня много говорится о применении композиционных материалов. В новом двигателе для ПАК ФА применяются композиты, которые построены не только на полимерной матрице для холодной части, а также детали, созданные на высокотемпературных композициях.

    Today many talk about the application of composite materials. In the new engine for the PAK-FA composites will be utilised, which are based not only on polymer matrices for the ‘cold section’, as well as elements created from high-temperature composites…

    Thanks Austin, you just made my day!! (first time ever this has been publically acknowledged).

    JSTVCVWDE09898OCD, you do know what a cold section of a low-bypass turbofan is, don’t you?
    Does this mean that post where I wrote “polymer matrix composites for the cold section- you idiot!!”, should be reinstated? I think it should, I’m going to petition the MODs.

    Interesting comments on the high temperature section, looks like he’s referring to an LP turbine of ‘intermetallic titanium’/Ti-MMC under development by NPP ‘Motor’*.

    Actually, JSTVCVWDE09898OCD, there’s a whole host of fusion welding techniques for thermoplastic composites (X-ray, laser etc.) and with carbon fibre thermoplastic composites being readied for primary aircraft structures, a BLISK should be easier to develop than an MMC counterpart:

    http://www.jatm.com.br/papers/vol4_n3/JATMv4n3_p255-266_A_Review_of_Welding_Technologies_for_Thermoplastic_Composites_in_Aerospace_Applications.pdf

    The same techniques cannot be used on MMC composites, which is an indicator of the highly specialised nature of VNIIALMAZ’s development. It might grant licences to other domestic manufacturers, but it certainly won’t be advertised for sale. As for finding a way “this big ******* can squeeze in there”, that would be a pin tool development see NASA’s efforts.

    There’s something else too. It is described as an ‘orbital friction welding device’, but compared to the other equipment described as such the World over- including VIIALMAZ’s own website, it is nothing of the sort. This, along with keeping the details to a minimum, is a well known and somewhat sneaky practice of avoiding patent infringement litigation, but it matters little if the device is a not for export, specialised, hush-hush piece of kit.
    It’s more like this:

    http://www.twi.co.uk/news-events/connect/archive/2006/march-april-2006/causing-a-stir-in-the-welding-world/

    GE’s MMC engine structures fabricated using FSW, including fan blade & disk, also thermoplastic composite fan blade:

    http://www.google.com/patents/US7879454
    http://www.google.com/patents/US7507310?pg=PA7&dq=friction+stir+welding+of+thermoplastic+composites&hl=en&sa=X&ei=SphlUeagN8PAPNf8gaAG&ved=0CEAQ6AEwAw

    *http://www.rolls-royce.com/about/technology/material_tech/composites.jsp

    in reply to: Pak-Fa News Thread part 22 #2284976
    Jō Asakura
    Participant

    Yeah you’re right. Last summer in California the Samsung Electronics lawyers should have said “Your Honour, the ‘Apple’ patents are joke patents worthy only of toilet paper!! What matters is the factual & legal weight of these ambiguous, badly put together 6 year-old cartoon graphics…”

    VNIIALMAZ looks like a serious engineering outfit, as you’ve stated developing FSW for the MS-21, and that patent looks to be for a very specific purpose indeed.

    2 polymer composite fan blades developed by OAO NIAT (ОАО НИАТ),

    Thermoplastic:

    http://www.findpatent.ru/patent/238/2384750.html

    Thermoset:

    http://www.findpatent.ru/patent/238/2384749.html

    Let’s see if you can find how closely affiliated to UGATU, NPP ‘Motor’ & UMPO these guys are- and if they’d be amused by ‘joke’ patents.

    Now that you’re ‘shifting sands’ again declaring some form of tangible production is what really matters, these guys (in conjunction with TsAGI) are big on CNT modified composites for manufacture of major aircraft & engine components including a nano-modified polymer composite compressor fan blade:

    http://mempct.ru/index.php?option=com_content&view=article&id=29&Itemid=20

    Can you see something interesting in the subsection titled ‘The Main Competitive Advantage’? I’ll give you a clue:

    1.Наличие результатов НИР по…..графенами

    Suddenly VNIIALMAZ’s robotic FSW device doesn’t look like a joke, does it?

    in reply to: Pak-Fa News Thread part 22 #2285480
    Jō Asakura
    Participant

    This can be regarded as a solid fact?:D

    As solid as a desert dune…

    Well ‘VNIIALMAZ’ can always acquire the tool patented by DSTU used in shipbuilding etc. to FSW aluminium alloys with steel:

    http://www.findpatent.ru/patent/244/2446927.html

    ‘VNIIALMAZ’ already posses the tech to FSW a ‘BLISK’, maybe they don’t need Grenzebach Mashtech Ltd’s fancy robot after all (could be a World first, apologies to the Russkies for underestimating them):

    http://www.findpatent.ru/patent/242/2424884.html

    …’Type 30′ MMC ‘BLISK’ anyone?

    in reply to: Pak-Fa News Thread part 22 #2285578
    Jō Asakura
    Participant

    Then why are you asking the same stupid questions in different guises? When you’re not moving the goal-posts and endlessly quoting yourself, that is.

    If you’d read these 2 properly, your latest sojourn into jackassery could have been avoided:

    http://www.iapd.org/dwp_test/pdf/thermoplastic_composites_aerospace.pdf
    http://www.compositesworld.com/articles/thermoplastic-composites-primary-structure

    It’s Europe, Russia & Asia that will lead the way in ‘Thermoplastics’ civil applications because the US would have to make substantial re-investments to pry itself away from ‘Thermosets’, not feasible in present financial climes. The US military won’t get left behind, though.

    Closing in on our elusive ‘thermoplastic composite BLISK’

    GE patent from 2006/07:

    This invention relates generally to thermoplastic components and more particularly bonding of such components by friction stir welding.

    It is known in the prior art to construct composite materials using a thermoplastic polymer matrix with reinforcing fibre, hereinafter referred to as “thermoplastic composites”. These materials combine light weight and good strength..Examples of turbine engine components which may be constructed from reinforced plastic include rotating fan blades, outlet guide vanes, reverser cascades, and various other static structures.

    http://www.google.com/patents/EP1941987A1?cl=en

    Recent robotic FSW co-development between Grenzebach Mashtech Ltd, Kuka & EADS:

    http://www.grenzebach.com/index.php/eng/technology/special_solutions/friction_stir_welding/grenzebach_friction_stir_welding_technology_package

    If the Russians can’t develop their indigenous version, won’t have to wait too long to buy it:

    http://www.grenzebach.com/index.php/eng/company/grenzebach_russia_moscow
    http://www.findpatent.ru/patent/244/2446927.html

    Russian imports of hi-tech welding gear set to rise to nearly $1bn in 2017:

    http://weldingdesign.com/archive/oil-and-gas-sector-driving-welding-equipment-sales-russia
    http://www.holroyd.com/news/ptg-news-full.php?news_id=29&section=SHARED

    …as for fighters, much of this info should be on the ‘6G Thread’.

    in reply to: Pak-Fa News Thread part 22 #2286107
    Jō Asakura
    Participant

    As for thermoplastic, in theory, it is doable. Heat can make it flow and set again if oxidation can be avoided.

    When you are thinking about thermoset plastic. that is just out of the question.

    Just need to know, 99.9% of the polymer matrice for structural composites are thermoset plastic ( such as epoxy resin,Bismaleimide resin and etc.)

    This blade half is thermoset plastic too.

    Firstly, you’ll have to come to terms with the fact that the very same technology (FSW) used to manufacture NPP ‘Motor’s’ MMC blade can be used to create the ‘BLISK’. Employing a multi-axial processing centre or by using welding robots it is of course possible to produce complicated 3D seams.

    There is nothing “magical” about the tech- it is globally well established commercial engineering practice:

    http://www.twi.co.uk/news-events/news/2012-11-friction-stir-welding-enabling-worldwide-engineering-success/
    http://www.twi.co.uk/technologies/welding-coating-and-material-processing/friction-stir-welding/

    Epoxy resins will shortly be superceded by thermoplastic resins embedded with carbon fibre, aramid fibre and glass fibre in the matrix -the same A-VaRTM applies.

    http://www.victrex.com/en/peek-polymer-based-composites.html
    http://www.jeccomposites.com/news/composites-news/carbon-fibre-composite-brackets-made-using-victrex-peek

    Again, FSW is the prime integrating tool for this new generation of composites, exemplified here in an Airbus patent:

    http://www.google.com/patents/US20120328837

    This would be the enabling material & technology for a thermoplastic PMC ‘BLISK’.

    in reply to: Pak-Fa News Thread part 22 #2286747
    Jō Asakura
    Participant

    Not for the first time in this thread, it’s LM that gives an insight into what the Russkies are up to:

    http://www.faqs.org/patents/app/20090258232

    ..and here’s a Russian version:

    http://www.findpatent.ru/patent/245/2456361.html

    Friction stir welding is a solid state joining process developed in the early 1990s, that utilizes a high strength rotating pin tool to create frictional heat which induces plastic flow to create a bond between two metallic surfaces. This process is primarily used on aluminium, and most often on large pieces which cannot be easily heat treated after welding to recover temperature characteristics. The friction stir welding process may be used with other materials as well, such as for example, other metals and plastics.

    http://www.faqs.org/patents/app/20090258232

    As friction stir welding (FSW)/ сварка трением с перемешиванием (СТП) is just another version of linear friction welding (LFW)* used for aluminium and it’s alloys, as the latter is used to create high-integrity joins between fan blades and discs: ‘BLISK’s- this is the product (MMC**) and associated technology (FSW/СТП) UGATU & NPP ‘Motor’ are bringing to UMPO in the aforementioned programme for the “высокопрочных лопаток для двигателя перспективного авиационного комплекса фронтовой авиации (ПАК ФА)“.***

    В перспективных двигателях пятого и шестого поколений на первых ступенях применяются лопатки из металлокомпозитов, где в матрице из алюминиевого или магниевого сплава располагаются армирующие нити из бора и углерода.

    In the future engines of the 5th & 6th generation, the fan blades for the first stage [of the compressor] will be made of metal matrix composites, where on a matrix of aluminium or magnesium alloy are [impregnated] the reinforcing yarns of boron and carbon.

    ******** *********, Уфа : УГАТУ, 2010

    I think I’ve found our composite ‘BLISK’, Djcross.

    * http://www.gkn.com/aerospace/media/resources/Presentations/Solid-State-Welding-Farnborough-Air-Show-2012.pdf
    ** http://forum.keypublishing.co.uk/showpost.php?p=2010044&postcount=420
    *** “high-strength blades for the PAK-FA’s engine”.

    in reply to: Pak-Fa News Thread part 22 #2288080
    Jō Asakura
    Participant

    Jo, you can easily find a direct answer from the link you posted above. just need to click a few more and read………..

    http://technopark-at.ufa-rb.ru/index.php?option=com_content&view=article&id=21:-l-r&catid=5:2011-02-11-10-57-34&Itemid=15

    РЕЗУЛЬТАТЫ ВЫПОЛНЕНИЯ ПРОЕКТА

    Организовано целевое взаимодействие УГАТУ с УМПО в результате совместной реализации проекта создания высокотехнологичного специализированного производства узлов и лопаток ГТД с облегченными высокопрочными конструкциями для перспективных изделий, в первую очередь двигателей 5-го поколения военного и гражданского назначения.

    It is stated clearly these solutions ( titanium hollow blade and blisk tech) are used for both civil and military 5th generation engines.

    More bullcrap. I ask you again where does it “clearly” say the military 5G engine will use wide-chord, hollow titanium fan blades? Erm……nowhere. In fact, nowhere on that page or website is that composition mentioned nor has anyone in the Russian aviation engine industry ever made that claim, unlike for the PD-14 blade which they’ve been shouting about for some years now. See the descriptive distinction reported @ the UMPO meeting (above).

    Incidentally, you do know that the fan blade for the PD-14 is a joint effort between OAO ‘Aviadvigatel’ and NPO ‘Saturn’, don’t you? which means NPP ‘Motor’s’ involvement (if any) in the project is purely consultative, and their use of the terms like ‘development’, ‘participant’ should be viewed in that context, probably for CFD and FEM modelling and verification.. Unlike their co-development with UGATU of the MMC blade of the first stage compressor, which is exclusively their project from inception to certification- it’s what they do, note carefully what the word ‘создана’ means (established/developed).

    You’re confusing the tooling-up of fabrication facility UMPO to manufacture the 2 blades as indicative of their dual use- of course they’re both going to use the same advanced manufacturing technologies, but the materials & structures are entirely different as are their companies of origin.

    A good analogy would be TSMC, they make chipsets designed & developed from all over the World- Intel, ARM, Samsung, AMD, nVIDIA etc. But they are to different specs & purposes, TSMC has to keep abreast of the latest fabrication tech by consultation and investments from their customer base as semi-conductor dies become ever smaller and complex. In a similar vein UMPO* serves several Russian aviation engine manufacturers under the umbrella of ODK/UEC.

    Interestingly, what your link does say is that the establishment of a mechanism for greater efficiency of the joint structure in bringing developments from UGATU to production @ UMPO has been concluded (remember you dismissed it as a mere R&D lab). Given the former’s traditional close links to NPP’Motor’ in the schematic** and a certain 6 year, government funded development project- now I ask you, what do you think that means? I’ll give you a clue, translate what comes after © above those pretty pics on the previous page.

    *http://www.umpo.ru
    **http://technopark-at.ufa-rb.ru/images/techno/about_project16_big.png

    That’s quite a few years old, and if I an remembering correctly, was part of Sukhoi’s research into their next generation bomber , the T-60S?

    That is NPP ‘Motor’s’ Su-27LL TVC flying lab, you can see it here from 07:45

    http://www.youtube.com/watch?v=4Kk9UxB7eLE&feature=youtube_gdata_player

    in reply to: Pak-Fa News Thread part 22 #2288633
    Jō Asakura
    Participant

    A limiting factor in most axial turbomachines is the blade-to-disk attachment. Overstressed blade-to disk attachments crack and fail, causing the turbomachine to throw the blade. Throw one blad and the out-of-balance turbomaching can quickly self-disassemble. It is an issue with the metallurgy/stress limitations of the metalic disk. This is why the “blisk” was a technological breakthrough. The blisk eliminated attachment failures by eliminating the attachment.

    If a composite version of the blisk could be produced, it would be a monumental breakthrough.

    DJ, metal matrix composites (MMCs) can be linear friction welded (LFW), i.e. ‘BLISK’, or even the more recent ‘bladed ring’ (BLING :D).

    Thanks for your efforts to collect all the infomation.

    But just need to mentions 2 things regarding to 129 or type 30.

    One is that UEC ( Perm ) already made her choice to pick up materials solutions of fan, LPC, HPC, combustion chamber, HPT and LPT for PD-14.
    and in the past several years, has been investing serious money into these engineering developments , pushing very hard to mature these tech solutions to an industrial level.

    The other one, according to public information, Engineering development of 129 or type 30 inherited engineering archievments made and proven during PD-14 development, including materials solutions.

    Considering the tight schedule and limited investment for type 30, can symply presume that UEC management and engineers would not have the luxury of financial resource and time not to use the existing materials and engineering solutions for PD-14. ( pushing a lot of new engineering and materials solutions from Lab R&D to industrial productions is just too costly, tieme-consuming, risky and unnecessary. )

    Let’s wait and see what is going on with type 30, regarding materials solutions.

    That’s utter bullcrap. I’ve given you the single most critical stealth feature and materials engineering solution that facilitated the scrapping of S-ducks sometime 2006/07 when the design of the T-50 was frozen and approved- it doesn’t get more fundamental than that. The only thing clear about the attachments you’re peddling is that they’re over 5 years old and for the public domain, I’m giving you up-to-the-minute updates on developments that they’ll never openly admit to.

    You couldn’t be more wrong on “tight schedule and limited funding”-you think a fully government budgeted development running 2006-2012 is just for kicks to keep idle hands & minds busy? for a totally exotic & unconventional MMC structure? (Ti-MMC is the main focus of Western engine application R&D).

    I don’t deny synergy with PD-14, that’s more to do with capital tooling investment and upgrades for production: linear friction welding, isothermal forging, diffusion welding etc. If what you say is true, the PAK-FA stage 2 engine would have been ready for the the T-50’s first flight. I don’t think you’re reading my posts carefully, and you’re certainly not understanding them- and for sure you’ve not been able to decipher the enigmatic ‘Type 30’ project over the last several years.

    Seeking out company data is my job. Good day.

Viewing 15 posts - 481 through 495 (of 1,223 total)