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Jō Asakura

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Viewing 15 posts - 751 through 765 (of 1,223 total)
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  • in reply to: F-35 News thread. Part Deux #2345181
    Jō Asakura
    Participant

    Amiga, you cannot accuse someone of being an “idiot” unless you have conclusive proof…for example: if four aircraft were pictured flying in formation and their bort numbers were- 04,05,06 & 10 and a person thought that that means there’s a total of four in service- now that’s conclusive proof. K?

    in reply to: J-20 Thread 7 #2346866
    Jō Asakura
    Participant

    Yes, but the wing loading is much worse. You have the same amount of lift and on the other hand you have much greater inertial forces acting against that lift. More power is very good in the form of SEP, or for linear acceleration etc. but you will degrade your turning rates and turn radius with much higher wing loading.

    More efficient FCS and altered CG can help (less drag, little more lift from horizontal tail) but what do we now about SU-35S CG? Do you have any link on that one?

    The compensatory component (increase in thrust) exceeds 2:1 w.r.t. weight increases (16t for baseline Su-27 to 17.5t worst case for Su-35S), even if the same control surfaces* have to overcome more inertia for a heavier plane (notwithstanding new FCS KSU-35 FBW).
    Are you implying that the compensatory component has an exponential relationship with weight increase?

    I’ll try to find the link for Cg.

    *I’m sure the Su-35S’ enlarged rudders will play a part in conjunction with ailerons/spoilers and the FCS for the maneuvre in question- and the increased area is not only for differential rudder deflection (speedbrake).

    in reply to: J-20 Thread 7 #2347563
    Jō Asakura
    Participant

    If you are right, 2 tons more compared to baseline SU-27 is very, very disappointing (sustained and unsustained turning rates, POST STALL region excluded, will suffer greatly from such increase in weight)…

    Why? It has altered Cg and 4T more thrust than the baseline Su-27.

    in reply to: Indian Air Force Thread – 19 #2348013
    Jō Asakura
    Participant

    AMCA really is nothing more than assurance for pakfa progress. Really, without Rafale there could be no hope for AMCA. They have never tackled engine manufacturing at an advanced level, and I’m not talking just fighter jet engines. They rely on outside partners for their electronics integration. With their track record I doubt the planned 2017 demonstrator will make it in the air before 2019.

    Quite a harsh assessment, not sure how you see AMCA as a hedge for FGFA/PAK-FA as they are a totally different class of fighter. AfaIk, AMCA is destined to replace MiG-29, M2K, Jaguar, MiG-27 etc. but not Su-30MKI!

    I agree on ‘leveraging the French’ but why not? They’re paying premium prices (for a premium product), and excluding SAAB, would the US or EADS be so transparent and co-operative with their cutting-edge tech? I think not.
    Besides, the Indians are in a prime position, having the hottest defence market for probably decades to come, they can utilise this leverage until their domestic suppliers get up to speed, whether private or state (that’s the whole idea of offsets).

    As for engines, expect a ‘joint venture’ deal for the de facto re-branded M-88X to be signed sometime this year, to power AMCA & future Rafale upgrade. The Indians can indigenously manufacture the AL-31P from scratch…..and the Chinese (still) can’t.

    Obviously the priority Indian stealth programme is the FGFA, but given that Indian participation at such a late stage is quite limited (aside from the 2-seater which will be a somewhat drawn out affair)and involves mainly licensing, tech transfer and indigenous avionics integration.

    However, recently I’ve got the impression that the ‘AURA’ UCAV has a higher priority than the AMCA. Remember the Indian govt. put out an RPF for outright purchases a few years ago and, failing that, have pursued a ‘technology partner’ for their future UCAV. Even though the ‘AURA’ is very ‘hush-hush’, it appears that things are moving much faster and have more momentum behind the scenes than for the more ‘white world’ AMCA.

    Such a stealth strike asset will fit into the future IAF portfolio very nicely and will keep upgraded assets and Rafale relevant and effective for many years. Maybe this points to an acknowledged protracted development for the steep learning curve that will be the AMCA- benefitting from lessons learned from the FGFA, AURA, Rafale and the ‘Super 30’ upgrade.

    in reply to: J-20 Thread 7 #2349447
    Jō Asakura
    Participant

    If so, it probably will exceed the T-50 in both range and internal payload. A little depressing to think about from an Indian POV…

    Airframe weight considerations aside, given that the aerodynamic efficiency (particularly transonic efficiency) of the T-50’s wing and aerofoils’ design exceeds that of the MiG 1.44 (and hence J-20), and that the T-50’s stage 2 engines will be more powerful, lighter and fuel efficient than the J-20’s by a significant margin- then I see no reason for “depression” in the IAF.

    in reply to: Small Air Forces Thread #15 #2350083
    Jō Asakura
    Participant
    in reply to: Russian Navy Thread #2014021
    Jō Asakura
    Participant
    in reply to: Pak-Fa news thread part 20 #2351046
    Jō Asakura
    Participant

    Yesterday His Imperial Jedi-Master Eminence spoke to ‘Russia 24’, for Russian speakers here is the interview in full (re: PAK-FA starts @14:00):

    http://www.vesti.ru/only_video.html?vid=434893

    in reply to: NEW CHINESE STEALTH FIGHTER SIGHTED #2353839
    Jō Asakura
    Participant

    Tomorrow’s stealth compressor vs. 20 year old bendy pipes…..Hmmm, me thinks no contest. :diablo:

    in reply to: Pak-Fa news thread part 20 #2354317
    Jō Asakura
    Participant
    in reply to: Pak-Fa news thread part 20 #2354381
    Jō Asakura
    Participant

    Runway hog:

    http://russianplanes.net/images/to82000/081524.jpg

    in reply to: Russian Navy Thread #2014344
    Jō Asakura
    Participant

    …and ‘Yuri Dologorukii’ returns from sea trials ahead of his scheduled induction into service on the 29th (Navy Day):

    http://kuleshovoleg.livejournal.com/81958.html#cutid1

    in reply to: Pak-Fa news thread part 20 #2357178
    Jō Asakura
    Participant

    A report from an engine technology exhibition some time late 2011 detailing FGUP TsIAM’s work.

    http://engine.aviaport.ru/issues/79/pics/pg04.pdf

    As regards PAK-FA, TsIAM is delegated work regarding:

    малоступенчатым высоконагруженным вентилятору и КВД с низкой массой;
    A fewer staged, high loading fan and a low mass, HP compressor;

    основной высокотемпературной камере сгорания;
    The main high-temperature combustion chamber;

    высокотемпературной одноступенчатой ТВД;
    High-temperature, single-staged HP turbine;

    легкой форсажной бесстабилизаторной камере сгорания;
    A lean-burn combustion chamber without a stabilizer

    цифровой САУ с полной ответственностью (FADEC).
    FADEC

    Also reported is work on a UAV (UCAV?) engine and conceptual design of the PAK-DA engine.

    Interesting pics:
    БЛИСК турбины из биметаллического сплава (page 5, top left)
    BLISK turbines made of a bi-metallic alloy

    Камера сгорания перспективного ТРДД (page 5, middle-left)
    Section of combustion chamber for a future engine

    Лопатка РК модернизированного КНД из полимерного композита (page 6, top left)
    Fan blade ‘RK’ for upgraded LP compressor made of polymer composites.

    Лопатки РК и НА перспективного КНД (page 7, top left)
    Fan blades ‘RK’ & ‘NA’ for a future LP compressor

    Рабочие лопатки турбины из композиционных материалов (page 7, bottom-left)
    Working fan-blades of a turbine made of composite materials.

    in reply to: Indian Air Force Thread – 19 #2357940
    Jō Asakura
    Participant

    Looks like these guys are serious:

    Representatives from Dassault, Saab and BAE Systems say that all three companies are in discussions with the DRDO for possible technology partnerships in the IUSAV project. DRDO sources indicate that teams from the organization have been invited to visit facilities in France and the U.K., respectively, where the Neuron and BAE Taranis are being developed.

    http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_07_16_2012_p45-471464.xml

    in reply to: NEW CHINESE STEALTH FIGHTER SIGHTED #2358272
    Jō Asakura
    Participant

    You have to give credit where credit’s due (BAE Systems’ servers- just kidding!!).

    Looks good, me thinks this is a more significant development than J-20, me also thinks it a ground-based lab. A certain person will not be happy…kudos.

Viewing 15 posts - 751 through 765 (of 1,223 total)