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aerospacetech

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Viewing 15 posts - 16 through 30 (of 1,127 total)
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  • aerospacetech
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    4 March 2011. 82 year of age after a long and protracted illness, general designer Mikhail Petrovich Simonov.

    Mikhail Petrovich began work in the Sukhoi Design Bureau in 1970. In 1975 he 1970. as the deputy chief designer, he has participated in state testing Sukhoi Su-24.

    In 1976, M. Simonov became chief designer of the legendary fighter Su-27. Over the next three years under his leadership was the complex of works on refining the initial draft and the creation of the serial version of the aircraft. The emergence of unique Su-27 fighter identified vector of development of domestic military aircraft industry for many decades.

    In January of 1983. MP Simonov became General Designer of Sukhoi. ” Under his leadership, were created by modification of the Su-27 – SU-30 SU-33, Su-34 family of sport aircraft Su-26, Su-29, Su-31.

    In the late 80’s, early 90’s, Mikhail Petrovich has pioneered the successful promotion of production of Sukhoi – Su-27 and Su-30 on the international market.

    “The death of Mikhail Petrovich – a big loss. Mikhail Petrovich Simonov – is an epoch in domestic aviation. This was a man who had a vision and knew how to take risks for future success. Created under his leadership, combat aircraft identified for many years to face a Russian military aircraft and brought him to a leading position in the world. Mikhail Petrovich retained a unique school of Sukhoi, the strongest engineering school in the country, which is now entering new frontiers to create a modern aircraft “, – said Mikhail Pogosyan Aslanovich, president of the UAC, General Director of Sukhoi and MiG .

    Michael Petrovich was named a Hero of the Russian Federation, has other state awards. He was awarded the Lenin and State prizes, doctor of technical sciences, member of the Russian Academy of Engineering.

    From Sukhoi press release.

    in reply to: The PAK-FA Saga Episode XV #2356358
    aerospacetech
    Participant

    The raptor was to incorporate this and an AIRST systems, but it’s enormous costs led to cuts to save money, on wich these systems were cancelled. Multiple radars have been installed on Flankers, no challenging difficulties

    Explain which Flankers have had multiple radars fitted, please.

    T-50s sensor diversity (X-band, L-band, IRST) will certainly give it advantage in modern stealth combat, as well as a very good situational awareness.

    L band arrays are for IFF. If you count that for T-50, throw in dozens more antennas in various bands for the F-22. Only real difference is the IRST.

    in reply to: J-20 Black Eagle – Part 4 #2356978
    aerospacetech
    Participant

    JAST… Hmmm…. Not bad ๐Ÿ™‚

    in reply to: J-20 Black Eagle – Part 4 #2362424
    aerospacetech
    Participant

    To return to some points made by Plawolf in posting to myself a couple of days ago:

    The point I was trying to make was that if I wanted advice on what digital camera to buy, the only opinions Iโ€™d seek would be those of professional users. I would ignore what the amateurs were saying at the camera club. The same goes for assessments of the defence data from Aviation Week, Forecast Associates, Janeโ€™s, or Stratfor โ€“ itโ€™s what the professional user thinks that counts. That is where those organisations get their income.

    What that boils down to is, in the old world, only defence journalists had the chance to access designers, pilots etc and get information. So information flow was one way, regulated by the professional press.

    In the new world, it is perfectly possible for a web forum to have a poster who is better connected to Chengdu than all the journalists in Janes put together.

    The problem comes in telling that person from the 99 young Chinese kids inventing stuff or reposting rumours.

    Reputation counts for a lot – so a user who has posted information that is later corroborated from other sources is worth paying attention to next time.

    The best “old world” journalists are pefectly aware of this which is why many of them lurk in forums such as this on the lookout for such sources of information.

    Now, when I look at Janes’ data, quite often I see errors. My feeling is that the quality of journalism at that company has eroded over time. However they were always perhaps the most conservative bunch, so that may be part of it.

    in reply to: J-20 Black Eagle – Part 3 #2363909
    aerospacetech
    Participant

    I think there was more than one design during the early ATF phase, which showed RCS reduced canard fighters. So I guess consideration was given to such layouts in the US as well.

    You are partly correct, but don’t forget there were two stages of ATF. First specs called for low frontal RCS but were much less concerned about other directions. Later this was revised to very low RCS from all directions.

    in reply to: J-20 Black Eagle – Part 3 #2363912
    aerospacetech
    Participant

    Actually, the starting point for the T-10, the Su-27 prototype, according to the Sukhoi designers was the North American submission for the FX program. They considered it superior to the McDonnell Douglas design which won the competition (The F-15).

    Starting point was emphatically not the North American design.

    The T-10 configuration came from two main influences, one domestic and one foreign.

    First influence was the T-4MS.

    The T-4MS lifting body concept had been shown to get huge lift/drag ratios in the wind tunnel, and Sukhoi felt they needed a radical concept to get a chance of exceeding the US fighters.

    The earliest T-10 drawings have the fuselage as a lifting surface made up of perfect airfoils with underslung engines and a front fuselage pod above. Unfortunately, the production guys took one look at the constantly curving profile and said “no way guys, that will be too hard to make” so the T-10 design built had flat sections to ease manufacture.

    The second major influence was a British technical report on ogival wings.

    The earliest drawings were done around the end of 1969 as the F-15 program was being assessed. Sukhoi were relieved that McDonnell-Douglas won as it was conventional and they felt they had a better chance of beating it than the North American design which was much closer to their own concepts.

    in reply to: Chinese J-XX/14/20 p.2 #2336692
    aerospacetech
    Participant

    Another thing to consider is suitable air to air missiles for the aircraft whilst the PiLi-12 BVR missile is probably suitable for internal carriage the standard WVR missile fielded by China the PiLi-8 is hardly suitable with its huge fins:

    http://www.sinodefence.com/airforce/weapon/images/pl8_01.jpg

    The PiLi-9 is probably more suitable with its smaller fins but its an export weapon with inferior performance to the PiLi-8. I highly doubt they would integrate the Russian R-73 so that leads me to the conclusion that they have something new in the pipeline.

    Ahem…

    PL-10… test round fired 2 years ago. PL-21 test round supposedly fired (ground launch) March 2010.

    in reply to: China's upcoming 5th G fighter–J-20 prototype is ready #2338222
    aerospacetech
    Participant

    based on the bottom picture, looks like the wheel bay doors have sawtooth panels. Does Pakfa have that?

    Yes. On T-50, all doors opening in flight are planform aligned, while access panels which only open on the ground appear not to be. This suggests to me access panels would be sealed with radar absorbent putty, which weapons bay doors and landing gear doors can’t be.

    in reply to: China's upcoming 5th G fighter–J-20 prototype is ready #2339703
    aerospacetech
    Participant

    yup, and the reason why the Jh-7 is a flounder and the others isn’t is because the JH-7 came at a time when they issued those names.

    the 17 and 10 pretty much just uses the english translation of the Chinese name.

    Flying Dagger Fierce Dragon..

    I can see you are as well informed as your namesake… a hotdog.

    The codenames are assigned by the ASCC, since 2005 called ASIC.

    http://www.dtic.mil/asic/

    First formed in 1948, the Air and Space Interoperability Council (previously known as Air Standardization Coordinating Committee (ASCC)) is an active and productive international organization that works for the air forces of Australia, Canada, New Zealand, the United Kingdom and the United States of America. Its principal objective is to ensure member nations are able to fight side-by-side as airmen in joint and combined operations.

    Names are still being assigned after the end of the cold war e.g.

    Su-34 : FULLBACK
    Su-47 : FIRKIN
    Mikoyan MFI : FLATPACK
    Yak-130 : MITTEN
    KJ-2000 : MAINRING

    aerospacetech
    Participant

    There were Conway engined versions of the XF8U-3 Crusader III studied. See Tommy Thomason’s new Naval Fighters volume on the XF8U-3.

    in reply to: Canards and stealth. . . #2415522
    aerospacetech
    Participant

    Not a single solid evidence for the canard/stealth issue, just a random stupid-cool comment and the traditional disliking of the US designers for canards (for the US needs)

    But that is…if a unamed guy makes a cool comment to bash international designs then it turns in a fact..because the phrase was cool enough..how was it? “the only place i want acanard is on the enemies plane”…yeah cool…

    As I understand it, it was Harry Hillaker (google him if you don’t know him) who said it, and he said (in the context of a technical forum where French and British engineers were putting forward the merits of close-coupled versus separated canard deltas) the best place for a canard was “on someone else’s airplane”.

    The guy who designed one of the most successful fighter aircraft of all time, what would he know… in case you don’t know, he studied canards for that design and didn’t use them.

    in reply to: PAK-FA Saga Episode 13 #2388900
    aerospacetech
    Participant

    Yes a single F-22 can take a ‘passive’ shot using ‘just’ information for the AN/ALR-94. Other aircraft claim to be able to do so as well (Rafale fans are particularly vocal). But again doing so is going to have a significantly lower pk than a proper lock.

    Any sensor (or combination of sensors) which can give direction and range can generate a target coordinate for the AMRAAM, and then update it in flight if necessary.

    ALR-94 can give direction and range.

    in reply to: PAK-FA Saga Episode 13 #2390558
    aerospacetech
    Participant

    Yeap. Cue the radar, which cues the missile.

    Can it?

    Assuming the AMRAAM can track its movements after launch (navigational guidance), so can calculate where it is relative to the launch aircraft… then from the info provided via the datalink it can orientate itself to actually head toward the target, then there is no reason a passive launch cannot be made.

    However, the reason radar has traditionally been used is to avoid all that, and give the missile radar head a return (using the launch aircraft radar as a transmitter and the missile head as a reciever), so it just has to worry about moving to that dot.

    But the former adds a helluva lot of complexity to the missile… complexity = added weight. Probably a trade-off that is worth making, but I dunno if they have or not. (Anyone?)

    The amount of ignorance packed into this post on how AMRAAM works makes any reply I could make redundant.

    in reply to: The PAK-FA saga Episode 12.0 #2427601
    aerospacetech
    Participant

    I estimated Length 19.2m (without pitot), span 14.2m, height 4.9m back on 1st Feb when everyone else seemed to think it was much bigger ๐Ÿ™‚

    I might take another stab now we have more high quality images.

    in reply to: The PAK-FA saga Episode 12.0 #2428812
    aerospacetech
    Participant

    wont 30 years make difference ? …

    Yes, because AL-31F from 1980 had a life of 1500h :confused:

Viewing 15 posts - 16 through 30 (of 1,127 total)