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Marcellogo

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Viewing 15 posts - 796 through 810 (of 1,560 total)
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  • in reply to: USAF not F-35 thread #2177202
    Marcellogo
    Participant

    Lol the su-34 makes me wonder, could the F-35 be modified with a side by side cockpit. The intakes could probably be moved outward by about 10-15cm, and the front fuselage would look more like that of the su. They would have to add some weight at the back probably. Making a tandem dual seater would disequilibrate it way too much. Anyways back on topic.

    It is not just fat enough like it is actually?
    It wouldn’t be better try to elongate it a little so to being more streamlined instead? A la J-20, maybe?
    In any case it would impact with the usual problem of stealth planes: even a minimal modification, way, way less than making a dual cockpit, in external form and you would need to made all RCS reduction calibration again…

    in reply to: Russia moving tac air troops to Syria #2178456
    Marcellogo
    Participant

    Ahem, seems me that ultimely also the russians have mastered the procedure to built separate parts of a large ship and after assemble them at sea…

    in reply to: Russia moving tac air troops to Syria #2180101
    Marcellogo
    Participant

    I’ll post this article also, that seem me a rationale and non partisan approach to the NFZ idea.
    I found very interesting the data about the 1998 campaign over Kosovo.
    I would however added also some consideration about the 2006 Lebanon campaign, just to add another level of difficulty to the whole thing.
    http://warontherocks.com/2016/10/political-airpower-part-i-say-no-to-the-no-fly-zone/

    in reply to: Russia moving tac air troops to Syria #2180103
    Marcellogo
    Participant

    Do we have a project name for the HaweyeSky?

    The catapults are though exactly for such a type of low t/w planes, heavy loaded MiG and Sukhois would instead use the longer STOBAR runway.

    in reply to: RuAF News and development Thread part 15 #2180428
    Marcellogo
    Participant

    The most important advantage of Electronic scanning lies within it’s rapid beam steering ability. It allows more precision and more update for multiple target tracking. Plus since the beam is computer controlled, you can precisely control how long the beam should stay in an area, thus you can improve Time on Target for scenario line..detection of small RCS target. This is main reason why everyone wants ESA radar.

    For Active Array (AESA) Main advantage over conventional slotted planar array like Zhuk ME or PESA like Bars lies within Reliabilty. AESA modules does not have single point power failure common to PESA or Slotted planar array. The AESA can tolerate up to 10% module failure before things got out of control. Conventional or PESA radar using Travelling Wave Tube or other amplifiers like Klystrons.. will fail if TWT fail. Plus AESA modules have long life. TWT or conventional transmitter got only around 200-500 Hrs of MTBF.

    Regarding power budget. AESA’s advantage lies in very short path between radiator and the module. Thus having less loss in receive or transmit path. PESA or conventional may have loss associated with waveguide assemblies and antenna feed network.

    In the future.. AESA advantage will outweigh its cost, especially when Photonic true time delay got implemented for beamsteering. Phase shifters which historically limit the operational frequency bandwidth for ESA radar will go away. Thus allow the radar to make maximum use of their frequency.

    All exact, only operative disadvantage of AESA when compared with PESA is that with radiator and modules attached one to the other it is very hard to put it on a steering plate.
    Actually both F-22 and F-35 and Rafale use a fixed one thus limiting field of wiew to +/- 60° while only one having it, in a quite unusual form, is Gripen E-F.
    [ATTACH=CONFIG]249255[/ATTACH]
    How you see It is actually mounted 30° inclined on a rotating platform.
    So, for a 4,5 plane like Su-30 or Su-35 but above all strike Su-34 a modern PESA is a good option: their phase shifter are actually the same of an AESA, just the radio wave emitter is conventional but until they van produce a more powerful emitter that their own active modules the associated loss are easily compensated.
    [ATTACH=CONFIG]249257[/ATTACH]
    Unlike a conventional MFI radar it doesn’t have the issue of disrupting RCS as it doesn’t need to steer continously, just to be inclined in the desired direction before emitting (the one of Gripen would instead necessitate to move continously instead).
    A coulpe of planes will have them pointed respectively left and right and probem solved.
    For the 5 gen it is different pair of shoes however and they opted for the definitive solution i.e. have added side looking radars.

    in reply to: Russia moving tac air troops to Syria #2181105
    Marcellogo
    Participant

    Well, the Russian navy seems to disagree with you on this count – they have “plans” to build their own Gerald Ford 100,000 tonner in the future:

    https://en.wikipedia.org/wiki/Project_23000E

    https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Model_aircraft_carrier_project_23000E_at_the_%C2%ABArmy_2015%C2%BB_2.JPG/1024px-Model_aircraft_carrier_project_23000E_at_the_%C2%ABArmy_2015%C2%BB_2.JPG

    Just to note how they not just retained the sky jump even with EMALS catapult imstalled, they added a second one also on the angled deck.

    in reply to: Russia moving tac air troops to Syria #2182257
    Marcellogo
    Participant

    What “reality check”?

    https://coronadotimes.com/news/2016/02/19/fire-on-navy-ship-in-bay/

    See my post above: if you consider the LCS (and the Zumwalt also) a more succesfull program than the Kutnetsov class…

    in reply to: Russia moving tac air troops to Syria #2182261
    Marcellogo
    Participant

    Ok, now that a more reasoning approach seem to have returned there I’ll post my 2 cents.
    Let’s make a distinction between what is the single ship, now more than 25 years old and having suffered from the USSR downfall and the class in itself.
    Because you know I am not seen same problem in the recently refurbished Liaoning, that has kept the same propulsion system, so maybe it’s just the result of aging and/or the fact of being the first one of the class.
    Kutnetsov was the first ever carrier to utilize STOBAR and in this it was certainly a success, given that also India and China have adopted it, albeit in a unconventional way.
    Said so, it was somewhat crippled by some peculiar shortcoming derived by both the peculiarity of Soviet doctrine (the Granit launchers) or from problems in the initial introduction of some new technologies (Radar Systems, Su-33),that the fall of the Soviet Union doesn’t gave the possibility to be corrected.
    Still the major desig flaw is IMHO in the steam propulsion in itself as the STOBAR main advantage would have been instead the possibility to use a more modern and way simplier COGAG scheme, like the one that the Viraat would have.

    in reply to: Russia moving tac air troops to Syria #2184484
    Marcellogo
    Participant

    if they mix the diesel with kerosene it wont smoke

    Yes but they have neither Diesel than Kerosene, russian ship run on furnace oil or to use their own term Mazut.
    It is a quite ideal combustible for steam engines as it is semi-solid and burn at higher temperatures.
    Add that it come as cheap as dirt for a petrol exporting powerhouse and you get how they favor them even if smoky as hell.

    in reply to: Chinese air power thread 18 #2188411
    Marcellogo
    Participant

    yeah, i agree it really shouldn’t be that interesting to dispute.
    but for some reason Chinabots like deino, foxmulder and byoin and Russia stronk like JSR and KGB bust a nut when their favorite aircraft is called out for being too long or too short, or too straight or too curved.

    you don’t see the America #1 or France est Grande crowd caring much about it. probably some 3rd world mentality about wanting to be close to western sizes.

    For what I have seen ‘Murica are ecqually peculiarly sensitive over some other topics, expecially when it come to their Technology is God mindset.
    They usually think as an example that Air combat shift directly from close dogfight with guns (see F-16) to head on BVR engagement at hundreds of km distance (a la F-14/phoenix: 100% miss in US service) and generally they think that the only solution of any problem is to constantly pour heavy amount of new hi-tech gizmos, that would regularly get available just ten years from now…
    Every one has its own sensibility to certain argunents : so as an another example, let’s try to talk about European projects without citing my own nation also and you would receive a quite angry reply from my parts…

    in reply to: Russia moving tac air troops to Syria #2188412
    Marcellogo
    Participant

    What element the coalition use for support and from where they start?
    Because Russian have Latakia that’s is 200km from Aleppo and when they had to act in Palmyra they moved helicopters in a closer base, same happened with Incirklik A-10 while Coalition has not air bases in Iraq AFAIK except for Apaches. And actual theatre of operation is very distant from the Persian Gulf.

    in reply to: The PAK-FA News, Pics & Debate Thread XXV #2189836
    Marcellogo
    Participant

    Could someone please tell me exactly what is meant by photonic radar because I see different definitions?

    Photonic radar is when insead to product radio waves using a klinstron or a TWT a laser is used to produce photons and they are converted into them once they reach the radiating elements. Something they used the acronim PhAESA photonic active elecronically scanned array but they tend now to drop the active as radio waves are not generated directly.
    It seems to sport enormous avantages above actuals ones.
    First of all it is Software definited: A,C, L, X or K band emission all from the same radar.
    Add an extremely crisp signal also a great distances, with an image like resolution and a complete elimination of the ambient noise.
    Several thousand of signals emitted in a tenth of second, so to gain both doppler beam sharpening and LPI at the same time.
    Putting all of those things together, a real scourge for stealth planes.
    And worst to all, actually we just had the first one of them operational.

    http://www.phodir.eu/

    http://www.ircphonet.it/research/publication/private_pdf/papers_621.pdf

    in reply to: Russia moving tac air troops to Syria #2190568
    Marcellogo
    Participant

    Unlike Turkey. Russia would never do such thing without getting a “green light from US” Which they would never get in the first place.

    But it goes like this, -Russia talks to US, telling them to back off the airstrikes, US and Russia is co-op on air operation, contrary to what some people believe. By Co-op i mean they transfere out pre-flight routes before each mission, if the mission is close to where they do Tac air op anyway. VKS is not operating in certain areas and vica verca in Syria, but i’m sure they have guidelines and regulation in for of an agreement.

    US then relay that message towards Turkey. Turkey realize the US wont step up for Turkey if Turkey steps out of line in Syria, will have no other option but to back down.

    In large, its world politics, and Turkey has to adhere to that.

    Vica Verca?:highly_amused:

    The rest all exact anyway.

    in reply to: battle of the sexiest: Rafale or Pak-fa? #2191580
    Marcellogo
    Participant

    I would add alsothe, ugly but with a character for the F-4 like ones.

    in reply to: battle of the sexiest: Rafale or Pak-fa? #2191585
    Marcellogo
    Participant

    A decade from now, we may see a sight like this, at some Indian airfield, with the PAK-FA derived FGFA in the mix too..

    3 of the best looking fighters of all time..I’d add the Mirage-2000 and the pre-unified cockpit MiG-29 to the list.

    http://www.livefistdefence.com/wp-content/uploads/2014/06/PHOTO2.jpg

    My all time favorites are: Su-27/35, Mirage III and Draken. Pak-fa would add to the list also but after flanker anyway.

Viewing 15 posts - 796 through 810 (of 1,560 total)