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    Russian Air-to-Air missiles

    Isos
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    Post  Isos on Tue Sep 17, 2019 1:03 pm

    70km is possible. The goal would be to destroy patrol aircraft, not fight a carrier group.

    http://roe.ru/eng/catalog/air-defence-systems/radar-and-electro-optical-equipment-for-air-target-detection/1l122-2e/

    This radar is 2m×2m and could be mounted on a sub mast. It has 80km range in L band and an error in accuracy of only 100m against a 1m2 rcs target. It would very good at guiding an ARH missile against a patrol aircraft that has a rcs of more than 100m2.

    Patrol aircraft can use small torpedo of 10km range and deapth charges so it can't reteliate at the sub.


    For diesel subs they can mount the older variant 1m×1m with 40km range (low power output mean hard to detect at long range).

    http://roe.ru/eng/catalog/air-defence-systems/radar-and-electro-optical-equipment-for-air-target-detection/1l122-1e/
    GarryB
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    Post  GarryB on Tue Sep 17, 2019 3:05 pm

    Or it could use an IR sensor and not emit any signal.... it might only detect aircraft out to 20-30km but that is fine because it would do so passively... if it is raising a mast then it might as well raise its ESM mast which would detect emissions from helicopters and MPAs at pretty good distances and with an ARH missile like the 9M96 it should be able to work out where the missile needs to start looking for targets on its flight out.

    I agree this will be used for defence, but equally it could be part of an attack strategy... come close to the surface and look for air threats... once the coast is clear or is made clear a UAV could be launched with passive sensors that climbs to 5-10km altitude.... if you just shot down a helo or MPA then you can expect enemy forces to start closing in even just to try to recover the crews.... a rapidly approaching destroyer or smaller aircraft could then be located and identified by the UAV and an anti ship missile launched by the sub to deal with the target...

    Against a small or relatively weak enemy a sub captain could get quite aggressive... I mean look at the UK SSNs in the Falklands campaign and the Argentine navy was not exactly the weakest on the planet... they had subs and carriers etc...

    There was talk if I remember correctly about a 9M100 missile defence system for Subs, but AFAIK they only deployed Igla MANPADS to their Kilos and other subs as the Kilos of course being diesel electric had to surface to snorkle and run their diesels to charge their batteries. It would make less sense to fit them to SSNs or SSGNs because masts sticking out of the water are a good way to get found and hunted down...
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    Post  flamming_python on Wed Sep 18, 2019 1:18 am

    GarryB wrote:Anti sub helos and MPAs are not the most difficult targets... but then imagine an arsenal sub based on the Akula SSBN with UKSK-M launch tubes... you could fit the sail with enormous AESA radar panels and IR sensors and have it sit on the surface launching thousands of SAMs to defend a group of ships... a SAM and radar picket frigate would have nothing on it....   Twisted Evil

    It's a good idea, but not in the way of an anti-air asset for a naval group.
    Surface combatants have their own anti-air radars and missiles, and there will typically be a ship with a Redut system capable of launching missiles at up to 120km ranges. It's sufficient. Their radars will be further above the horizon than the sub's would be. Surface vessels are a lot more survivable than subs; one missile getting through won't take them out. They are also immediately ready for action at any moment without having to surface to track and engage targets, or even be aware that there are targets. There is no real advantage to having a surface group rely on a sub as its most capable anti-air asset. You might as well have a dedicated large surface ship for that if that's what you want, or better yet a multirole vessel - both would be a lot cheaper than an Akula and more capable.

    An anti-air Akula's real advantage lies in its ability to surface in any unexpected place at any time and turn an area of assumed safe airspace into a denied one. It can catch entire flights, or vulnerable planes such as transports, AWACS, reconnaisance, etc... completely off-guard and destroy them before the hostile airforce even realizes where the missiles are coming from. After the sub has destroyed a few targets, it can submerge, retire and then surface somewhere else at another time; this will save it from anti-radiation missiles. Anti-air guerilla warfare if you will. The danger of course is the enemy promptly deploying ASuW aircraft and warships to hunt for it; they will know its last known position to a high degree of accuracy and can conduct sweeps from there, deploy sonar buoys along presumed routes, deploy autonomous torpedoes to hunt for it and so on. An under-water anti-air launch capability for SHORAD class missiles and some sort of deployable floating short-range radar array might be neccessary for self-defence from ASuW aircraft, together with extensive decoy and anti-torpedo measures.

    All in all not cheap, especially for a one-off vessel. An Akula could be used as a test-bed to experiment with the concept, with various ad-hoc temporary additions and equipment - but a smaller, serial sub design modified from a more modern model already in production might be optimal for actually implementing it; with a deployable radar mast with IR sensors and so on.
    GarryB
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    Post  GarryB on Wed Sep 18, 2019 8:07 am

    Not really suggesting an upgraded Akula as an AEGIS replacement... Russian vessels are already pretty well equipped in that regard anyway...

    With the Sigma data sharing system they use the Akula wouldn't even need its own radar strictly speaking it could be a missile arsenal ship that can launch SAMs or anti ship or anti sub or land attack missiles at anything that needs to be attacked... it might be operating with two corvettes or a full surface fleet of carriers and cruisers and destroyers... it just provides extra missiles of a wide variety that are all ready to use as needed... if it has 200 tubes it might be fitted with 100 tubes with 150km 9M96 SAMs and 100 Zircons for anti ship or land attack use... so with 100 Zircon missiles it will be a rather potent vessel... even converted Kirovs have 80 tubes but it is rather unlikely they will be all one type of missile loaded in those, and 100 UKSK-M tubes should be able to hold 16 9M96 missiles each... so 1600 150km range SAMs is a potent capacity in anyones book... a nearby helicopter (Ka-31) or AWACS platform operating from a Carrier and it can intercept targets out to 150km even down to sea surface level... you talk about the cost.... well I would wager those missiles will cost more than the upgrade... the question is do you want that capability... the alternative is going cheap on some sort of container or tanker ship, or converting a Delta... converting a Borei is just a waste of a Borei... it would be more useful with SLBMs in it.

    An anti-air Akula's real advantage lies in its ability to surface in any unexpected place at any time and turn an area of assumed safe airspace into a denied one. It can catch entire flights, or vulnerable planes such as transports, AWACS, reconnaisance, etc... completely off-guard and destroy them before the hostile airforce even realizes where the missiles are coming from. After the sub has destroyed a few targets, it can submerge, retire and then surface somewhere else at another time; this will save it from anti-radiation missiles. Anti-air guerilla warfare if you will. The danger of course is the enemy promptly deploying ASuW aircraft and warships to hunt for it; they will know its last known position to a high degree of accuracy and can conduct sweeps from there, deploy sonar buoys along presumed routes, deploy autonomous torpedoes to hunt for it and so on. An under-water anti-air launch capability for SHORAD class missiles and some sort of deployable floating short-range radar array might be neccessary for self-defence from ASuW aircraft, together with extensive decoy and anti-torpedo measures.

    All in all not cheap, especially for a one-off vessel. An Akula could be used as a test-bed to experiment with the concept, with various ad-hoc temporary additions and equipment - but a smaller, serial sub design modified from a more modern model already in production might be optimal for actually implementing it; with a deployable radar mast with IR sensors and so on.

    That is another interesting use, but considering the size of the Akula they could easily have decoy UUVs to distract, and of course ambush surface vessels hunting the sub and the SAMs it carries would make aircraft very vulnerable... any sonobouys hitting the water could be jammed or EMPed or used to locate the aircraft deploying them for attack...
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    Post  Austin on Sat Sep 21, 2019 3:35 pm

    Isos wrote:And longer range 40km compare to 30 for r73. IIIR seeker. And more off boresight angle.

    The web page on RVV-MD says 2 colour IR seeker not IIR seeker

    I guess Russia is a bit behind the west compared to AAM seeker technology

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    Post  GarryB on Sun Sep 22, 2019 3:42 am

    RVV-MD is an export model missile... the original R-73 was a very potent weapon without an imaging seeker, I suspect a two colour IR sensor makes it even more capable, without making it as expensive as an imaging sensor.

    The human eye is a very capable sensor and creates a very detailed view of the world, but the enormous amounts of information the eye can collect is overwhelming to the human brain, so over the period of a second you can fool a human being into thinking 25 still images per second is real time movement.

    The eye of a house fly is much more basic and does not give the fly the detailed view of the world that a human eye does.

    A house fly eye is often depicted in movies as being made up of thousands of little eye receptors and when viewing what the fly supposedly sees we see the same detailed view a human sees but repeated thousands of times by each eye sensor, but in actual fact the fly only sees basic shape and movement from many angles at once.

    It trades quality for a much wider field of view, and it is more of a warning system of movement than something they can use to examine the world in detail.

    If you try to slap a fly on a table surface it will always be in the air before your hand hits where the fly was.

    If you want to kill a fly don't slap your hand where it is when you start your attack, aim in the air above where the fly is at the moment and catch it as it takes off.

    The fly will detect the movement of your incoming hand, but it does not see your hand... it just recognises danger and the need to fly to a different location... you see things happen every 25th of a second... it sees things in much more like real time so it appears it has better reactions, but it is still a stupid fly.

    The point is that its simple eyes make it one of the most numerous and successful living things on the planet.
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    Post  GarryB on Sun Sep 22, 2019 3:48 am

    Note the 9M100 is supposed to use an IIR seeker, and have a mobile phone like computer brain with an onboard library of the IR signature of various objects.

    These IR signatures are 3D so it can identify most targets from any direction on its own... which means if you are in your Su-57 and the 9M100 missile is in the internal wing weapon bay, and you detect a target using your IRST and the thermal imager to ID the target the coordinates and ID of the target can be passed to the 9M100 missile and it can be launched and it can fly on autopilot towards the targets location with its IR sensor looking to find the target.

    A longer range launch could use a datalink between the aircraft at missile to keep the missile updated on any direction or speed changes the target might make so it intercepts it even if it makes some serious manouvers after launch but before lock on.

    With external weapons you generally rely on a lock on before launch to prevent wasting missiles, but with internal weapon bays you need lock on after launch, or all the stealth of internal weapons is wasted because you have to lower the weapons like AIM-9X for it to get a lock on target before you can launch it... which isn't really that stealthy.
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    Post  Cyberspec on Sun Sep 22, 2019 11:46 am

    There's different versions of the R-73

    R-73 - R-73M - R-73M2 - R-74....the RVV-MD is the export analogue to R-73M2 or R-74

    There's also the K-74M and K-74M2 which AFAIK not yet in service
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    Post  GarryB on Mon Sep 23, 2019 3:53 am

    There are more than that... some have radio proximity fuses and some have laser proximity fuses...
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    Post  Cyberspec on Mon Oct 14, 2019 7:33 am

    some interesting photos of R-27 / AA-10 ALAMO
    https://mobile.twitter.com/DnKornev/status/1182457133599772674

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    GarryB
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    Post  GarryB on Mon Oct 14, 2019 11:42 am

    It gets a bit of stick for not being AMRAAM, but the butterfly wing is designed to reduce drag during manouvers and improve turning performance.

    It is also fully modular and comes in an enormous range of seeker and motor combinations.

    You could write an entire book just on the variations of that one missile system.

    If you look at this Indian R-73 mounted on an aircraft the two vertical optical ports visible near the front of the weapon pylon on the missile indicates this is an R-73EL with a laser fuse...

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    Post  -89dbsm on Thu Nov 07, 2019 6:00 pm

    Cyberspec wrote:Su-34 armed with a R-27P1 / R-27EP1 AAM with passive guidance

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    Details here:
    Arrow http://eng.ktrv.ru/production/military_production/air-to-air_missiles/r-27p1_-_r-27ep1.html

    Dumb question: What's with the conical nosecone? Is that just a dummy missile for carriage at Airshows etc? The usual missile nosecones are less harshly tapered, so is this just a stock cone added to a missile body to show as a mock up?
    Isos
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    Post  Isos on Thu Nov 07, 2019 7:05 pm

    You mean the thing at the end of the wing ? That's a jammer. There is one on each wing. They can take them off but in operation they will always carry them.
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    Post  -89dbsm on Thu Nov 07, 2019 8:49 pm

    Isos wrote:You mean the thing at the end of the wing ? That's a jammer. There is one on each wing. They can take them off but in operation they will always carry them.

    Nope, the R-27EP1 Missile. The missile usually has tapered conical nosecone:

    https://images.app.goo.gl/KsSgEvFjm7XrNS4J7

    Whereas that one has a very harsh, ice cream cone type seeker head. My question is is it just a standard cap placed on a missile model?
    Isos
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    Post  Isos on Thu Nov 07, 2019 9:17 pm

    Probably inert dummy missile made plastic for shows. They can't let it fly above the public with real ones.
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    Post  Dima on Sat Nov 23, 2019 5:00 am

    In Vympel are anniversary, his 70th birthday, and there was a visit and there were photos of the visit...
    https://charly015.blogspot.com/2019/11/y-esto-que-actualizado.html

    It is a new missile air-to-air compact seemingly guided by radar than by comparison with the R-77 (see below) tells us that their dimensions are much smaller, and this can only be addressed to be loaded in the holds of weapons of the His-57 and other devices of new generation.

    Nor let us leave aside the two wineries in the side of the Su-57 (!).

    I would not be surprised if it has a length of around 2.20 m or less (!)... that is, where before I carried one now charged two.
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