Quote:
Originally Posted by speed150mph
you run into some big issues there too.
1: size. The sonar sets in a buoy are very compact. sound carries further in water so you don't need a large receiver or transmitter to do the job. Buoys also have a relatively short range as it is. Compare that to the size of even a portable air search set. Without some breakthrough, I doubt you'd be able to fit an air search radar into the same space.
2: power. Radars use a lot more power to transmit which means you need a lot of batteries (which adds to the size) or you have a very short battery life (possibly not enough to fire your missile.)
3: detection. A buoy mounted ASR would have a very limited range, which means if the helo is close enough to be a threat, you'd be launching the buoy right above yourself which, sitting on the surface and radiating, gives your position away just as bad as if your raised a mast.
4: cost. Can you make a radar that would get the job done that would be cheap enough that it would be disposable?
In the end, even that is not fiesable.
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oh yeah
sounds compromized...
a mini-drone then ? lol
but same issue about radar size or power there too... idk well then.
about radar size, on buoys (or eventually drone), i thought to similar sizes of what we find in 4th gen MR fighters cones (F16 maybe ? thats seems not such bigger... F15 is a bit too larger, i think, so let say any variant of fighters mounted radars taking already less space as possible in already existing variant)
note: about range of ASR, anyway, i thought only to an emergency cases radar, if helos, Tu142Bear or others similar threats are close enough to find us below, even with very low/very quiet state... maybe ~20to30kyd, even 25kyd range big max... that sounds enough for locking with radar and guide the depth-Stinger few mins later (wich could reach maybe ~10kyd range max with some adjustments of this variant compared usual FIM92 version ; its mostly for anti-sub helos threats i aim).
...IF a limited short range radar can help enough to reduce the size & make it hold on a quite larger buoy or mini-drone (not so "mini" anyway lol, but smaller than a Predator/Reaper, of course...)
i am thinking first to an hexa or quadricopter-drone, already existing now for civilians, wich can be quite big... just the question is, are they able to carry the weight of an -even smallest as possible- ASR...?
and needing also a bit complex system to be able to launch it below the surface, deploy his blades in fly next, at ~50ft alt, and taking quietly alt next to id incoming threats from optimal altitude, etc...
and anyway, in that case, not possible to use a wire to transmit datas to the sub... do any kind of high speed transmitter being able to operate below water ? i am not sure, probably with limited depth (wich could reduce intrest too, if sub must stay at something like ~100ft below surface to be able to receive target-tracking from drone, etc).
well, u probably right, its more harder than i thought first...
and thats probably main reason it never been used on subs yet.
(i thought mostly it was a matter of theory & how militaries imagined the subwarfare only, then enacting SAMs was useless in a sub by princip, etc... wich i was probably wrong. ...but yeah, seems firstly a technical issue beside, at minima, even maybe the only reason why we never seen that on modern subs...)
thanks for ur point of view, it was revelant.
cya
