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moon_light

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Viewing 13 posts - 901 through 913 (of 913 total)
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  • in reply to: Launch mode of anti ship missile #2311924
    moon_light
    Participant

    Submarine launched Exocet can be launched in bearing only mode as it’s more difficult for a sub to estimate range.

    Don’t know if the capability is enabled in surface or air launched versions. Given that the target has to be acquired with a sensor that can measure range (radar), it doesn’t make a lot of sense.

    Typically the latest version of an air-launched exocet would be launched with a complex trajectory including several waypoints in order to strike from the best angle and/or have several missiles converge on the target at the same time from different directions.

    I think the bearing only mode is quite usefull if target is detected by sensor that can’t measure range like FLIR , RWR ,it also help to protect aircraft because if the pilot know the direction of enemy he can stay under the radar horizon instead of sneak up and may get hit

    in reply to: SAR radar effectiveness in air to surface mission #2328052
    moon_light
    Participant

    I have some vague memory that IRST and radar in MiG-29 could work together in one of the WVR modes?
    Although depending on distances you might want to use laser to find the range, shouldn’t have problems with low RCS.

    How about modern western fighter like the f-16E or F-35 do they have that ability

    in reply to: SAR radar effectiveness in air to surface mission #2328156
    moon_light
    Participant

    Is there a way to make your radar work in pure rangefinder mode slaved to an ESM or IRST contact.

    Nic

    This is also my question? any one have any idea ? , I think it can improve the fighter ability to attack ground target a lot . For example modern FLIR like the
    sniper-xr can detected very large target from >100 nm but the laser can only reach 49 nm or less :confused: if the radar can be use as a pure range finder it would be great . For example the FLIR can detected the elevation and azimuth of the heat generated when the SAM TEL or a ship firing a missile , the radar then can be used to find the range to target:rolleyes: and with these information the aircraft can throw something like JASSM or Harpoon at the enemy
    P/s : As the ESM doesnt seem to work well against LPI radar i think this would be a good tatic , correct me if iam wrong

    in reply to: SAR radar effectiveness in air to surface mission #2328998
    moon_light
    Participant

    Is it possible to use the irst to cue the radar:confused: for example : if the target is not moving and have a low RCS so the radar couldn’t detected or get a lock at it , the FLIR by contrast able to see the target but the distance is too long for the laser finder range , in that situation will the pilot able to use the radar to find the range to target to help the FLIR to get a lock ? ( or the range to the location of target if it has a very low rcs ) i have heard of sensor fusion but not sure if i can be use in this way

    in reply to: SAR radar effectiveness in air to surface mission #2329002
    moon_light
    Participant

    ESM provides precise azimuth and elevation to an emitter, but lacks range capability unless you have friendlies nearby who will cooperate to develop a triangulated position fix.

    .

    :confused: from some book i have read i think modern ESM like the asq-213 and alr-94 can find the range to target even if there is only one ship

    in reply to: SAR radar effectiveness in air to surface mission #2329823
    moon_light
    Participant

    I would go with a SAR RADAR over a FLIR for general search pattern. The FLIR can be used to zero-in on targets, found by the SAR.

    How about the range , do the SAR radar has a considerable longer range than normal radar and FLIR in air to ground mode

    in reply to: Mines in modern naval warfare #2015888
    moon_light
    Participant

    :confused::confused: u haven’t answer some questions , what does this mean by ” maximum depth “, and can the Mark 60 carry any other torpedo apart from Mark-46

    in reply to: Nuclear anti-aircraft weapons #1792601
    moon_light
    Participant

    I think the lethal radius was 300 meters, so if they just stayed out of that…

    if the nuclear warhead explosive on the ground the lethal radius often be some where from 1-5 km but if it explosive at high altitude the EMP radius can be over 2000 KM
    http://heavenawaits.files.wordpress.com/2008/08/empmapgraphic.jpg

    in reply to: infrared anti ship missile effectiveness #1792604
    moon_light
    Participant

    So you’re of the opinion that missile development has stopped and they are stuck with whatever tech they have now?

    no but i just wonder why they dont put new seeker (like LADAR or AESA radar ) on the developing anti ship missile like SOM or NSM 🙁 all new western anti ship missiles use normal radar seeker or imaging infrared which can be easily foil by decoy ,ECM or block by a screen of chaff , flare
    http://en.wikipedia.org/wiki/Mark_36_SRBOC
    http://www.youtube.com/watch?v=MTp4GlM3Lk8&

    in reply to: infrared anti ship missile effectiveness #1792673
    moon_light
    Participant

    ^
    but almost every IIR anti ship missile are scene matching ( target’s image stored in the missile ) so if the target ir signature can be change these missile will be useless

    in reply to: max operate altitude of missile , fighter #1792677
    moon_light
    Participant

    In a zoom climb, you first increase speed in level flight, and then use the momentum for a peak of very high alt.
    In sustained climb, you continuously keep climbing.

    The limit of a missile alt is how much the fuel could push it upward before empty.

    Scramjet is ideally suited for high alt. unlike the others.

    JASSM will invariably fly at low alt.

    Yes, a rocket can fly higher than them all, assuming it has enough fuel to get there in the first instance.

    Those missiles will run out of fuel

    but a rocket or fighter to be able to fly up they must have the thrust/ weight > 1 is that right:rolleyes:

    in reply to: F-35 nuclear ability #2299822
    moon_light
    Participant

    A lot of military electronics is EMP hardened so you’d probably have to get it quite close.

    :diablo: to be able to completly immune to EMP the electronic equipment must be isolated from the environment for example Vacuum tube :p modern semiconductor devices are very easy to be destroyed by the electromagnetic pulse :diablo: so i think most modern AESA , PESA radar will be disabled by EMP

    Electronics can be shielded by wrapping them completely in conductive material such as aluminum foil; however, the effectiveness of the shielding may be less than perfect. Proper shielding is a complex subject due to the large number of variables involved. Semiconductors, especially integrated circuits, are extremely susceptible to the effects of EMP due to the close proximity of the PN junctions, but this is not the case with thermionic tubes (or valves) which are relatively immune to EMP. A Faraday cage doesn’t offer protection from the effects of EMP unless the mesh is designed to have holes no bigger than the smallest wavelength emitted from a nuclear explosion.

    http://en.wikipedia.org/wiki/Nuclear_weapon_yield

    in reply to: F-35 nuclear ability #2299963
    moon_light
    Participant

    In reply to your question, instead of blindly linking to various websites, try reading the information contained there in, the link to missile designations, states that the SRAM was retired in the early 90’s , why would it still be in service?

    The article you linked to regarding EMP, am I right in thinking that you believe its possible for a F35 to fire a ASAT weapon into low orbit and magically wipe out an enemies electrical systems? Its in a word poppy-****, EMP effects are overated in the media, if they were that dangerous to electronics then dont you think it would cause the F35 to fall out of the sky as well? because although you can get an ASAT to low eath orbit the F35 would need to be below the detonation to get the greatest spread of EMP.

    Also EMP is no repector of sides , ie it will blind freindly systems as well as enemy

    :rolleyes:

    🙂 but 1 F-35 fall out of the sky can disable the whole enemy fleet or SAM site is a good trade off isn’t it 😀
    one more thing :cool:the EMP effect created by nuclear explosion at high altitude is very very different from one created at low altitude 😎
    AGM-69 is retired but i mean it not very hard to make a new missile like that mainly for EMP purpose :rolleyes: ( much easier than design a new weapon like Jdradm :mad:) and because the EMP effect range is quite long it almost impossible to intercept the missile or stop the F-35 ( no need for whole bunch of tomahawk or HARMs :cool:)

Viewing 13 posts - 901 through 913 (of 913 total)