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jackjack

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Viewing 15 posts - 616 through 630 (of 1,733 total)
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  • in reply to: Rafales for Brasil #3, Cachorro-quente! #2389201
    jackjack
    Participant

    i think france will get it, everything points to that

    in reply to: Canards and manoeuvrability #2389274
    jackjack
    Participant

    i guess like roll deg per sec and sustained turn rate, aoa is another of those useless things
    some planes use hms and hobs, some planes dont is what arthur could be getting at

    in reply to: T-50 versus the F-35 #2389276
    jackjack
    Participant

    Erkokite
    0.5 is the number the russians and india are using, at this stage there is nothing to say they are wrong or misleading
    as soon as india takes it to red flag or there is an exercise in india, then everyone can have a look
    i’m sure a lot of pilots will line up for a back seat ride too

    in reply to: T-50 versus the F-35 #2389324
    jackjack
    Participant

    i guess the indians dont know the rcs of their own planes

    http://www.business-standard.com/india/news/india-russia-close-to-pactnext-generation-fighter/381718/
    Sukhoi’s FGFA prototype, which is expected to make its first flight within weeks, is a true stealth aircraft, almost invisible to enemy radar. According to a defence ministry official, “It is an amazing looking aircraft. It has a Radar Cross Section (RCS) of just 0.5 square metre as compared to the Su-30MKI’s RCS of about 20 square metres.”
    That means that while a Su-30MKI would be as visible to enemy radar as a metal object 5 metres X 4 metres in dimension, the FGFA’s radar signature would be just 1/40th of that.

    in reply to: Stealth features , RAM , etc … #2389407
    jackjack
    Participant

    you’re entitled to your opinion, if you would like to support them in any way, i’d be happy to read it, as i am happy to compare the rafale and shornet signature management measures

    in reply to: Canards and manoeuvrability #2389731
    jackjack
    Participant

    so do you have a creditable link for operational 45 deg ‘sustained’ AOA ?
    i found 70 deg for noseup, much better than i think you are trying show which is actually an optical illusion of your claimed angle because it is not measured on the same level, eg high plane taken photo from ground

    http://www.flug-revue.rotor.com/frheft/FRH9905/FR9905c.htm
    The Chief Test Pilot informs us that,
    “At the end of the test program, we will operate at an angle of attack of over 30 degrees. However, the deciding factor is not the exact number of degrees, but that it is still possible to manoeuvre under these conditions.

    http://www.targetlock.org.uk/typhoon/development.html
    Mai made a cautious approach to a few low-speed recovery corner points. Having rapidly gained confidence in the system he was able to enter the extreme low-speed recovery set-up with 70 degrees nose-up [AOA] attitude and power idle.

    in reply to: Stealth features , RAM , etc … #2389961
    jackjack
    Participant

    ok, i’ll put up a reasonable link now
    http://www.ainonline.com/airshow-convention-news/paris-air-show/single-publication-story/article/super-hornet-growing-in-export-stature-8789/?no_cache=1&tx_ttnews[story_pointer]=2
    The U.S. Navy has declared that the Super Hornet can be used “on the first day of the war,” signifying that it has a degree of stealth that may not be widely appreciated.
    Boeing carefully describes the design as “a balanced approach to survivability.”
    It is known that there is a radar signal blocker in the inlets, made of composite materials, and the AESA radar antenna plate is angled backward to deflect radar energy.
    There is also a certain amount of edge alignment.
    The forward fuselage is now all-composite.

    the fanboys seem to like bill sweetman, so i’ll put him up
    http://www.aviationweek.com/aw/jsp_includes/articlePrint.jsp?storyID=news/STEA01308.xml&headLine=null
    By Bill Sweetman / AviationWeek.com

    On its roll-out in 1995, the F/A-18E Super Hornet carried LO principles such as “edge alignment” to a degree not seen on most other conventional aircraft. For example, the engine-bay door edges were serrated. According to one Navy presentation, the Super Hornet carries “treated weapons” to reduce its radar cross section (RCS). In the early 1990s, the Phantom Works was experimenting with a fiberglass fabric material called Parabeam as the basis for absorbent coatings for stores. An EADS researcher has estimated that with a Have Glass RCS-reduction kit, the nose-on reflectivity of a Super Hornet could be one-tenth that of an F-16.

    in reply to: Stealth features , RAM , etc … #2390059
    jackjack
    Participant

    i know he’s fool and he is anti fa-18 for australia, thats why i found his post funny and worth posting
    he would of choked on every word writing it

    in reply to: T-50 versus the F-35 #2390124
    jackjack
    Participant

    as has been posted, the russians have said their goal is an rcs of 0.5

    in reply to: Stealth features , RAM , etc … #2390266
    jackjack
    Participant

    i think you are on shaky ground, when even the anti-fa18 kopp and co say different
    http://www.ausairpower.net/SuperBug.html
    It would be fair to say that the F/A-18E/F employs the most extensive radar cross section reduction measures of any contemporary fighter, other than the very low observable F-22 and planned JSF. While the F/A-18E/F is not a true stealth fighter like the F-22, it will have a forward sector RCS arguably an order of magnitude smaller than seventies designed fighters. Since every deciBel of RCS reduction counts until you get into the range of weapon payload RCS, the F/A-18E/F represents the reasonable limit of what is worth doing on a fighter carrying external stores.

    None of the RCS reduction features employed in the F/A-18E/F are visible on any of the three Eurocanards, which raises interesting questions about the relative forward sector RCS reduction performance of these types.

    and then there is this to take into account BW
    the sh does not normally fly with all it’s low rcs covers fitted and i havent seen pics of them

    in reply to: Stealth features , RAM , etc … #2390278
    jackjack
    Participant

    does this mean you dont want to compare the rafale and sh low rcs features ?

    in reply to: Stealth features , RAM , etc … #2390441
    jackjack
    Participant

    the sh was probably the worse one for you to pick out of the group
    why dont you get a picture of the super hornet and we can compere the rcs treatment of both planes to see where they differ
    there are some very obvious ones

    The F/A-18E/F’s radar cross section was reduced greatly from some aspects, mainly the front and rear. The design of the engine inlets reduces the aircraft’s frontal radar cross section. The alignment of the leading edges of the engine inlets is designed to scatter radiation to the sides. Fixed fanlike reflecting structures in the inlet tunnel divert radar energy away from the rotating fan blades.

    The Super Hornet also makes considerable use of panel joint serration and edge alignment. Considerable attention has been paid to the removal or filling of unnecessary surface join gaps and resonant cavities.
    Where the F/A-18A-D used grilles to cover various accessory exhaust and inlet ducts, the F/A-18E/F uses perforated panels that appear opaque to radar waves at the frequencies used.
    Careful attention has been paid to the alignment of many panel boundaries and edges, to scatter traveling waves away from the aircraft.

    It is claimed that the Super Hornet employs the most extensive radar cross section reduction measures of any contemporary fighter, other than the F-22 and F-35.
    While the F/A-18E/F is not a true stealth fighter like the F-22, it will have a frontal RCS an order of magnitude smaller than prior generation fighters.

    in reply to: New F-35 News thread #2390722
    jackjack
    Participant

    arent you getting sick of this game ?
    i’m not going to repeat the the various price numbers that are flying around and how they are arrived at
    LM estimated price is 20% less than the gov and the gov wants them to reduce the -20% price even further, showing how much faith they have in their price

    in reply to: Stealth features , RAM , etc … #2391022
    jackjack
    Participant

    thats ok its cool, you dont post too wild claims, as opposed to BW who is googling up something that he thinks proves the rafale uses the same composites as the f-22 and f-35

    from airframer, indeed rafale and super hornet use similar composites
    fa-18sh the rafale is above
    Hexcel Composites Carbon Fibre: Carbon fibers, structural adhesives, honeycombs, prepregs, sandwich panels and reinforcement fabrics
    Magnolia Plastics, Inc. Syntactic Composites: Adhesives, coatings and syntactics

    in reply to: Stealth features , RAM , etc … #2391032
    jackjack
    Participant

    they are getting the honeycomb for the f-35 from them by the look of it
    Cytec Engineered Materials, Inc. Prepregs: CYCOM 5250-4 bismaleimide prepreg; Epoxy Resins & Composites: CYCOM 977-3 toughened epoxy resin
    Dynamold, Inc. Epoxy Resins & Composites: Precatalysed sheet moldable shim material
    Hexcel Composites Honeycomb Composites: Honeycomb; prepregs
    Kongsberg Defense & Aerospace AS Subcontracted Composite Parts: Composite parts & subassemblies for centre fuselage
    Magnolia Plastics, Inc. Syntactic Composites: Epoxy syntactics, liquid shims
    Quickstep Technologies Pty. Ltd. News Composite Design Consultants: Development of parameters to cure high temperature resins

    so did the f-22
    Cytec Engineered Materials, Inc. Epoxy Resins & Composites: CYCOM 977-3 toughened epoxy resin; Prepregs: CYCOM 5250-4 bismaleimide prepreg
    Dynamold, Inc. Epoxy Resins & Composites: Precatalysed sheet moldable shim material
    Hexcel Composites Honeycomb Composites: Honeycomb, prepregs, composite adhesives
    Hitco Carbon Composites Inc Subcontracted Composite Parts: Inlet lip assembly
    Magnolia Plastics, Inc. Syntactic Composites: Epoxy syntactics

    the rafale
    Hexcel Composites Carbon Fibre: Carbon fibers, structural adhesives, honeycombs, prepregs, sandwich panels and reinforcement fabrics
    Magnolia Plastics, Inc. Syntactic Composites: Adhesives, coatings and syntactics

Viewing 15 posts - 616 through 630 (of 1,733 total)