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garryA

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Viewing 15 posts - 736 through 750 (of 948 total)
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  • in reply to: F-35 News and discussion (2016) take III #2138354
    garryA
    Participant

    The budget doc only says “F-35C aircraft integration” but the mfg and previous press releases have said it’s internal.

    Given the radical redesign apparent in the above photo, internal carriage in the A/C should not be an issue.

    Thanks
    i miss read your the word ” int” ( short for internal) in your earlier post as “isnt “

    garryA
    Participant

    Cut off with the insult guys, let be mature about this.

    garryA
    Participant

    In any case, airfoil itself is thin, you can improve it only to a degree, its not logical to expect Cl to go anywhere above ~1,2.
    .

    how thicks the airfoil of Su-27″ is compare to Typhoon?
    i know f-15 use NACA 64A203 but have no idea about the Su-27 or Typhoon

    in reply to: F-35 News and discussion (2016) take III #2138457
    garryA
    Participant

    Interesting that we are seeing an AARGM-ER (F-35 int compliant)

    So does it fit or not.?

    in reply to: F-35 News and discussion (2016) take III #2138504
    garryA
    Participant

    Orbital’s AARGM-ER – Twice the range as the standard AARGM, and F-35 A/C internal carriage compliant (Courtesy James Drew)

    http://s21.postimg.org/yl04qi4rb/AARGM_ER.png

    nice ,where did you got the picture ?
    why dont they used ramjet as the old design though ?

    garryA
    Participant

    Whilst the F-16 could achieve higher STR than a Mirage 2000 due to the M2000’s poor TWR, ITR was not higher. Even with the 25% advantage in TWR, the F-16 only manages marginally better STR of around 10% at 0 PS and 5% at -800PS.

    If SEP is -800 then that isnt a sustain turn , it is instantaneous turn.

    Oh, btw, the Su-35S has even higher wingloading vs Vanila Su-27S. I’ve seen figure over 440kg/m2
    .

    From Su-27 to Su-35 the shape remain the same so i would expect that CL doesnt change, in this case the instantaneous turn performance of Su-35 should be worse than vanilla Su-27

    garryA
    Participant

    Now, typhoon has 312 kg/m2, while it has unknown lift coefficent, Clmax has to be greater than 1,5 to match Su-27’s instantenious turn performance. You can bet your house and a million dollars no delta (with todays engine tech) can be made to even approach that number; for comparison similarly configured Mirage-2000’s Clmax value is ~0,9.

    how about effect of canard ? shouldnt canard improve CL by 10-15% ?

    As for TWR; Yes, when both are @ 50% fuel + 2AAMs, Su-27’s T/W is inferior to Typhoon at by ~12%. But that is an unfair comparison, as Su-27 would reach nearly twice the range with that fuel. Su-27 @50% fuel has exact same T/W of Eurofigher @88% internal fuel, and probably will have similar range with that fuel as well. That being said, T/W alone is also irrelevant without L/D ratio.

    Personally , i think it hard to compare T/W between Su-27 and Typhoon without knowing the dynamic thrust of AL-31F and EJ-2000, with lower bypass ratio , i would expect the EJ-2000 to perform better at high altitude though.On the other hand, the variable intake of su-27 is better at high speed

    in reply to: If you had to choose between Rafale or F-35 #2138618
    garryA
    Participant

    As stated earlier the AESA version has much longer range than the PESA (I believe range was increased by more than 50%).

    AESA radar is better than PESA because the low noise amplifier is put in front of lossy components thus they can achieve better signal-noise ratio. But Starfish does get it correct that radar aperture is rather important factor. small PESA on Rafale may out perform the big mechanical array on Typhoon , but i would expected that when they both get AESA , the one on Typhoon will perform better ( better detection range and angular accuracy).
    https://basicsaboutaerodynamicsandavionics.files.wordpress.com/2016/04/lna-and-noise1.png?w=1200

    in reply to: If you had to choose between Rafale or F-35 #2138986
    garryA
    Participant

    K np, lets both cooldown, right?

    Yeah, good point.
    here is photo of a cat for chilling down
    http://s2.favim.com/orig/150809/animals-cat-cute-cat-happy-cat-Favim.com-3085942.jpg

    I would not bother waiting, anyway.. Fire two Meteors on the sucker and disengage.. they will already do the job..

    Nonsense.. There is the OSF sensor and nothing like IR stealth exists.. It’s no coincidence that none of the fighters against which the F-35s have allegedly prevailed had any IR sensors to rely upon..

    Both F-15E and F-16 have sniper-XR though, moreover various techniques to reduce Infrared signature are availables, even thought they may not be as effective as radar cross section reduction measuares
    https://theaviationist.com/wp-content/uploads/2014/09/F-15E-Sniper.jpg

    garryA
    Participant

    Supermanoeuvrability is energy-manoeuvrability taken to the next extreme and often involves the ability to push high g at supersonic speeds at high altitudes.

    Energy maneuverability theory refers to aircraft performance in term of specific excess power ( mostly deal with sustain and instantaneous turn rate )
    Super maneuverability often refers to post stall maneuver

    in reply to: If you had to choose between Rafale or F-35 #2141684
    garryA
    Participant

    Did i say ANYTHING opposed to that? Did i endorse Picard’s claims? I just gave a rough idea where to find sources so as to critically (in its scientific meaning) read article. Nothing more nothing less, still you keep flaming me for having claimed things I DID NOT SAY.

    Alright, if you didn’t said i wrong or endorse Picard claim, then it is my fault for jumping to conclusion too quick here.

    in reply to: ECM pod can reduce RCS? #2141686
    garryA
    Participant

    not your mum, you can ask as much as you want, won’t bother me. No use acting like a 5 years kid asking for an ice cream.

    You are the one who get butt hurt when people want you to explain your theory, but iam the child?. If anything, it you who act like a child, all screaming and desperately accuse people of trolling when they dont believe your BS stories.

    Nope, try useful function “find” of your browser i quoted someone from iFi who used this acronym (personally i’m happy with the Digital to Analogic Converter chip of my Cayin N5 btw)

    Yes, you put up a paragraph about something that isn’t even related to active cancellation, with some technical words, some acronyms hoping no one will notice, then pretending like it answer the question. Then when people see through that BS , you get mad

    .

    Gave multiple links, extracts, illustrations etc. From iFi. enuf. There is no worse blind than the one who do not want to see.

    Yes, you gave a website from a British Hi-Fi sound company (They basically re write destructive interference using different wording.) and a paragraph about linear regulators. None of which explains the issue with active cancellation jamming raised by others at the start. Next time, you may as well posting link about noise cancellation head phone instead

    Because GENERALLY things should happen the way you think they should, that is how they happened? Preclusion… Wellcome to Garry’s fantasy world. An information is a piece that confirms your presupposition, and the rest of course should be discarded as it doese not fit Garry’s world.

    Things dont away happen the ways i like. However,unlike you, i dont have to hide behind some made up stories, nor do i need to give a paragraph about something completely unrelated as a distraction from the question people ask me

    in reply to: ECM pod can reduce RCS? #2141688
    garryA
    Participant

    Fairly well explained by the company here. Nothing to do with wave interference as electric parasitic noise has nothing to do with radioelectric waves. Still the active cancellation principle is applied (although not using half wavelength displaced signal as it would for radar waves cancellation). NVM…

    By generating a signal identical to the noise signal but in the exact opposite phase, it actively cancels all the incoming noise. ANC+® is the perfect ‘antidote’ for power supply noise, the bane of USB audio.
    ANC+(3)
    Pathetic again…

    As expected, despite all the screaming, finger pointing you dont understand what you talking about.You claim it has nothing to do with wave interference, yet the paragraph you cited talking about phase and active cancelling. So tell me genius, what principles is that? how can you cancel the noise without wave interference?
    .It laughable how you think this isnt half wavelength principle because they use the words ” opposite phase” instead of “out of phase by half wavelength”. Do you understand why active cancellation system need to transmit the signal half a wavelength difference from the wave it wants to cancel?

    in reply to: ECM pod can reduce RCS? #2141767
    garryA
    Participant

    Not my bad if you do not understand what iFi mother company electronicians wrote. He wrote the system was designed using active cancellation BECAUSE a linear regulator would NOT have fit. And after you pitifully attempt to disclaim “explaining” (sorry copy pasting wikipedia without sourcing your comment) how works what they DID NOT use to say it is not active cancellation… Of course a linear regulator isn’t… And they did not build one!
    How typical from you…

    And you did not write down any definition, you simply copied wikipedia attempting to explain something you do not comprehend. (otherwise you would have been able to explain it by yourself)I

    And i cite what i want to cite, it is not an anonymous armchair expert in wikipedia that will dictate which part of conversations i have i will -or not- cite.

    Pathetic again…

    So i asked you to explain the relation between the sound system and active cancellation in Spectra, and you reply by talking about something they didn’t use and has nothing to do with active cancellation?
    Why dont you cite the part that prove your point that this system use the same principles as active cancellation ?. Oh i know, there isn’t any.

    Which acronym did i use? Cite one? Lying again…

    DAC chip
    .

    How would you the heck know who i was talking to at Abingdon Music Research? You claim it was a PR? Prove it! (your way to act usually no)?

    Because generally, when you email a company, you will be email there sale board, marketing department.That how firms work, they want to sell their products,no point letting engineers talking directly to customers.

    Of course, i guess you know their stuff better than the company involved…
    [ATTACH=CONFIG]248186[/ATTACH]

    Sure, because the French MoD gave new sophisticated military technology to a British Hi-Fi company?

    in reply to: ECM pod can reduce RCS? #2141814
    garryA
    Participant

    At least i will quote electeronicians directly involved instead of copy pasting wikipedia… https://en.wikipedia.org/wiki/Linear_regulator and calling it “debunking”…

    pathetic…

    So you basically cited something that has nothing to do with active cancellation to start with.Putting some acronym together, pretend like it answer the question .Then get mad when someone writes down the actual definition and working principles of such thing?.
    And you didn’t cited the electronic engineer who work with the system, you cited the marketing guy. Moreover, you didn’t dare to cite everything because it will expose your lack of understanding about both systems.
    Calling me pathetic? so how come you still have to hide behind these made up stories? how come you still haven’t explain the relation between a linear regulators and wave interference in activecancellation?

Viewing 15 posts - 736 through 750 (of 948 total)