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Bharatheeyan

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Viewing 15 posts - 31 through 45 (of 69 total)
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  • in reply to: A simple explanation of phased array radar. #2588577
    Bharatheeyan
    Participant

    Here is a reality Check:

    1. The receiver DOEs NOT look at the received signal at the individual modules. The received signals from all the modules (participating in a single beam) are combined in respective phase relationship to get one Rx signal. This process is just the reverse of TX.

    2. The modules DO NOT work independently, and they CAN’T be at DIFFERENT (not even SLIGHTLY DIFFERENT) frequencies. At any instant of time, you MUST have the same instantaneous frequency and phase for all modules.

    3. A single module emit energy over the entire field of view. People have the notion that each module scans a small portion of the sky. That is TOTALLY INCORRECT.

    in reply to: The IAF – March-April 2006 #2567110
    Bharatheeyan
    Participant

    According to Singha on BR, the radar is EL/M-2032. Looks like MMR is dead. Maybe upgrade to 2052 later when it is available.

    Bharatheeyan
    Participant

    Takeoff/Landing: Snugly tight with no slack at all. Cruise: slack enough to allow a little stretching etc.

    And yes, been in turbulence what made people almost hit the overhead bin.

    in reply to: FC-1 Prototype 04: the Saga Continues #2580824
    Bharatheeyan
    Participant

    “All inlets are critical in flight, subsonic or supersonic. ”

    Don’t change what a person said in order to start a flame war in this thread. Post a DSI thread if you want to discuss that.

    No, I am not interested in neither starting a flame war nor starting a useless thread. If you feel irked about someone pointing the obviously ridiculous figure of sixteen minutes test flight, what can I say?

    The DSIs used on FC-1 for sure would have been wind tunnel tested, but they wouldn’t factor in the test flight unless the plane went supersonic, which I would bet it didn’t.

    in reply to: FC-1 Prototype 04: the Saga Continues #2581092
    Bharatheeyan
    Participant

    GoldenDragon, could you please explain what is DSI, and then make your assertion about the “critical at all speeds”?

    in reply to: FC-1 Prototype 04: the Saga Continues #2581839
    Bharatheeyan
    Participant

    BTW, the DSI affect subsonic as well as supersonic flight. The F-16 DSI test flights resulted in superior subsonic performance.

    Sure, DSI do affect, but it will be CRITICAL in supersonic.

    in reply to: FC-1 Prototype 04: the Saga Continues #2581924
    Bharatheeyan
    Participant

    How was the flight envelope verified? I am not an aeronautics guy, but the open source presentation on the LCA flutter test up to M1.4 indicates it takes a lot of efforts and flight time.

    And Did the 16 minute flight involve supersonic regime? if not DSI is not a criteria. You can use any inlet for subsonic operation.

    in reply to: FC-1 Prototype 04: the Saga Continues #2582259
    Bharatheeyan
    Participant

    Isn’t that remarkable? You do a full SIXTEEN minute test flight and it is ready for serial production!! What did they verify? That it can fly straight, come back and land?

    Bharatheeyan
    Participant

    Jamming flight controls is a real danger. Electromagnetic interference is NOT.

    in reply to: Lightning stories – do you have any? #572785
    Bharatheeyan
    Participant

    Recently in the series “Airplane” a Southwest plane at the gate got hit while on camera. Inspection shown a hole on the belly.

    in reply to: F-22 to Albania and Pakistan? #2602592
    Bharatheeyan
    Participant

    Sure They are getting Raptors. In a shrink wrapped package with assembly instruction manuals.

    And, yes, at 1/48 scale.

    in reply to: Whats the spiral on an engine fan for? #607644
    Bharatheeyan
    Participant

    I think the real reason is, if you use fluoroscent lighting, you will misjudge the fan speed. The spiral will clearly show the actual rotation. That will help maintenance crews. JM2C

    in reply to: Whats the spiral on an engine fan for? #609255
    Bharatheeyan
    Participant

    To hypnotize the curious onlookers 😉

    in reply to: Pakistan AF News and Discussions 2006 #2577070
    Bharatheeyan
    Participant

    denlop, a lot of stuff come to Pakistan in the name of war on terror which has in fact no use against either the terrorists in Afghanistan or “freedom fighters” in Pakistan. It is just a feel good factor. “See we got this super-duper indgeneous kool stuff and the “enemy” is crapping in their pants, (oops dhothies)”. There is no other use for them, unless someone in a powerful position actually believe that BS and do any misadventure. Not that these things have any significance then either.

    in reply to: Pakistan AF News and Discussions 2006 #2577365
    Bharatheeyan
    Participant

    Maybe the AGM-154 Joint Stand Off Weapon is for use not only against internal threats but external too. Its multi-purpose..isn’t it

    My point is, it is only for external threats. Then why the charade of war on terror and freedom fighters etc? Call a spade a spade!!

Viewing 15 posts - 31 through 45 (of 69 total)