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FalconDude

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Viewing 15 posts - 91 through 105 (of 1,100 total)
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  • in reply to: RuAF News and development Thread part 15 #2203915
    FalconDude
    Participant

    Russian Knights new Su-30SM:

    [

    I wonder if two seaters fly with full crew when on display shows.

    in reply to: Dutch investigators: Rebels fired Buk that downed MH-17 #2204815
    FalconDude
    Participant

    Another conspiracy theory?

    I am heading out to the bank in a few minutes to get some Euros for my impending trip. I’ll check at the nearby Maplin electronic stores and see how big their range of Buk spare parts is….

    Doesn’t have to be a conspiracy theory. You -a systems and military expert- should know that one may cannibalise 3 systems to make one functioning. If the rebels captured more than one BUK they may have used some for spares to get one functioning. Not much of a conspiracy… right?

    in reply to: Dutch investigators: Rebels fired Buk that downed MH-17 #2205412
    FalconDude
    Participant

    MSphere,

    This is relevant solely if the Iranian Airbus shootdown exhonerates the wilful negligence of pushing an incomplete BVR SAM system into an operational environment in which proper C3I wasn’t going to be present.

    Do you believe the USN allowing a reckless CO to command Vincennes means that it was fine for the Russians to put a Buk TELAR in the hands of people who could not employ it properly?.

    No one has yet offered a motive. Why would Russia give rebels a Buk? A Buk! You are a rebel in Ukraine and the thing you need the most is a SAM?

    in reply to: ECM pod can reduce RCS? #2205419
    FalconDude
    Participant

    It’s the traditional INS with GPS for increased accuracy. If no GPS is present, then it can rely on it’s normal INS modes.

    ah OK !

    in reply to: ECM pod can reduce RCS? #2205442
    FalconDude
    Participant

    You are thinking old school.

    In the F-35 it works like this and is the same for either a LOAL 9x or AMRAAM shot:

    1. The F-35 calculates the target’s GPS location and velocity (ie bearing, acceleration, and speed) based on any & all sensors or datalinks available (ie sensor fusion).
    2. It passes that information to the 9x or AMRAAM (9x Blk2 & 120D use GPS internally while older missiles use traditional INS) along with the F-35’s GPS coordinates & velocity.
    3. The missile is launched & will follow the flightpath calculated using data from #2
    4. Any F-35 in the area can supply updated data via datalinks where appropriate
    5. THe AMRAAM D can also answer back via it’s 2way datalink

    The key takeaway is that the weapon is not “linked” to a particular sensor or a particular fighter after launch.

    And what happens when there is no GPS signal? After all it is a satellite signal. Even heavy clouds affect it! You can’t beat physics!

    in reply to: ECM pod can reduce RCS? #2205541
    FalconDude
    Participant

    You’re making it way more complicated than it actually is. OTS shots have been done outside HOBS seeker limits. You give the missile an INS cue using HMD and the missile tracks to that point, with its seeker performing IRST as it goes.

    http://www.defense-aerospace.com/article-view/release/103248/raaf-fires-asraam-in-%E2%80%9Clock-after-launch%E2%80%9D-mode.html

    I said the same thing, no?

    in reply to: Dutch investigators: Rebels fired Buk that downed MH-17 #2205542
    FalconDude
    Participant

    You guys realise that what goes on in these threads is a p*****g contest between those who hate Putin/Russians because they grew up to hate communists, those who hate Putin/Russians because of ethnic reasons, those who love Putin/Russia for ethnic and political reasons and those who may or may not have a more objective view.

    The point is that I think we have lost any objectivity. I am sure some people will never be satisfied with anything.

    in reply to: ECM pod can reduce RCS? #2205546
    FalconDude
    Participant

    Unless you are an F35 and the missile is inside the weapons bay.

    Nic

    Yeah, I am not sure why they accomplish this, my guess is they slave the missile’s seeker head to the plane’s EOTS rather than the opposite so when the missiles is launched it “knows” which way to turn to achieve lock. Lot’s of instantaneous calculations must be taking place there..

    in reply to: ECM pod can reduce RCS? #2205629
    FalconDude
    Participant

    No, the HMD “says” in what direction you’re looking, regardless if there’s something to lock onto or not. What tells your missile that there’s someting to lock on are sensors positioned to cover that part of the sky (or ground, if it’s a ground target) and who detect it.

    Basically, with the HMD you tell the system “hey, look that way”, the system looks and displays what it found to you.. then you can designate this or that target and shoot at it

    It doesn’t have to be part f the plane. It may well be the missile’s seeker head. No IRST required

    in reply to: ECM pod can reduce RCS? #2128468
    FalconDude
    Participant

    A lock is one thing. Being able to reach the target is something else.

    reach the target?

    in reply to: ECM pod can reduce RCS? #2128477
    FalconDude
    Participant

    Your “evidence” doesn’t explain how you know you’re in the firing envelop. So you’re wrong, and now that’s the end.

    The Greeks mounted AiM-9s to the Mirage F1. Not compatible systems. What they did, was take the feed from the missile’s launcher, and wire it to the cockpit’s Mica buzzer. The pilot by selecting missiles via the switch, powered the feed and the missile’s seeker head feedback could be heard in the cockpit via the mica buzzer. The pilot’s were trained to recognise the ‘tone’ the head made when it had achieved lock! Needless to say this worked.

    I am no expert but I think that’s how it used to work for most 3rd gen planes and probably still the same.

    in reply to: ECM pod can reduce RCS? #2128491
    FalconDude
    Participant

    If HMD can’t collect any information by themselves then how can you use them to designate(choose) targets for your HOBS missiles?

    The aircraft’s cockpit systems track the position of the pilot’s helmet (these days they may even track the pilots eyes too). From this they can figure out the polar coordinates of where the pilot is looking.
    Then the compare that with the sensors’ field of view. Sensors are slaved to the helmet so they turn to the same direction and if they pick something up on that direction (IRST, missile’s IR sensor), it is locked on.

    FalconDude
    Participant

    Does anyone know why did they changed the wing configuration from delta in Mirage III to normal in mirage F1 then back to delta in Mirage 2000 ?

    delta had limitations before the F1. F1 was bleeding less energy and needed less thrust and space to take off.

    Mirage 2000 was FBW, unstable, better engine. No issues with having a delta

    in reply to: ECM pod can reduce RCS? #2128909
    FalconDude
    Participant

    fact is that nobody here has access to real data, but then, if you’re here just for trolling, you don’t care for data anyway… 😉

    an example, when you ask “why would you need radar in WVR?” I find it strange from someone claiming his expertise on fighter matters… maybe you need to light your radar because your onboard computer needs to know where the target is and pilots eyes aren’t directly linked to it. Even for a gun shot, your radar has to get the information and bring it to your weapons system so you get the range for your target in order for the HUD to display the pipper at the right place..

    [ATTACH=CONFIG]248635[/ATTACH]

    in reply to: ECM pod can reduce RCS? #2128916
    FalconDude
    Participant

    Not in a way useful to an enemy. It would just be cancelling radar reflection if they used active cancellation. So all they would see, or not see, is a reduction in detection range. It’s not exactly giving away top secret data, destructive interference is a well known phenomenon.

    You mean in a red flag scenario, traffic controllers who monitor the exercise, awacs and the red team fighters would not notice that they cannot pick up a fighter that is not supposed to be VLO within a predefined area? How exactly would they miss on that?

Viewing 15 posts - 91 through 105 (of 1,100 total)