PLAN Anti-ship/surface missiles

Tam

Brigadier
Registered Member
why attach anything when you already have a turbine? Electrical power (almost) comes free in this case.

Not this gas turbine, or to be more precise, a turbojet. You need to attach a generator which either have to be on the side driven by a belt or co axial to the turbine. Then you would need transformers to convert and step down the electricity. The turbine itself does not generate electricity. It only generates thrust. 'This isn't the jet engine for an aircraft.
 

supersnoop

Major
Registered Member
Its not cost effective to add AESA on a ground attack missile with IIR. You are destroying buildings that cost far less than a missile so don't try to make the missile cost far more than it should.

Homing is far more responsive to maneuvering targets than IIR. IIR works by continually analyzing and processing the image then going through a processing and a logic loop. Infrared homing simply steers the missile to a hot spot. IR seeker is used when the ARH head encounters jamming and the jamming succeeds although AESA itself is difficult to jam. Another use of IR is when the situation around the target has excess clutter like during littoral conditions, such as rocks on a shallow sea bed or protruding islands that can produce their radar returns.

IR itself has less range than radar due to water vapor absorbing IR frequencies and there is plenty of that in the ocean.

This would explain the YJ-83 configuration, but the RBS-15 picture raises another question.

Why would RBS-15 use IIR in a dual mode configuration especially in a coastal defence role where it could encounter those littoral conditions?

The CM-803 placard is really ambiguous. What are “other image seekers” exactly? Sounds like there could be multiple configurations.
 

Tam

Brigadier
Registered Member
This would explain the YJ-83 configuration, but the RBS-15 picture raises another question.

Why would RBS-15 use IIR in a dual mode configuration especially in a coastal defence role where it could encounter those littoral conditions?

The CM-803 placard is really ambiguous. What are “other image seekers” exactly? Sounds like there could be multiple configurations.

Your RBS question is both question and the right answer at the same time.

The CM-803 placard looks to me it uses the same IIR seeker for both land and surface targets. It is also meant to be used for a littoral defense role, hence use on Type 056, maybe even 054A; also used to support an land operation by hitting land and coastal targets. Also used to target small, radar stealthy ship vessels. If you think Taiwan it can fit all three. You have to expect that Taiwan and places like the Ryukus will be lined and heavily armed with land vehicles carrying antiship missiles, turning their coastlines into unsinkable missile ships. There's some indication from the Zhuhai placards that the missile will also be U-VLS launched, and from the shorter length VLS no less, so this can be an indication of destroyers firing salvoes of these missiles against land targets. That can also open the possibility of a future frigate with the shorter U-VLS using the missiles instead of the longish YJ-18 as its main antiship armament.
 

Totoro

Major
VIP Professional
Longer reach of radar seeker makes sense only up to a point. Once you hit a certain range, lets say 50 km or 100 km against most targets, adding range on top of that is not AS meaningful as adding other abilities to the missile. So if a smaller radar seeker can achieve a certain goal, and allow another *potent* seeker (IIR one) to be added in parallel, then the overall abilities of the missiles are more useful than having just a really strong long range radar seeker, but not having an IIR seeker or relying on just a IR seeker with a small array.

Today's missiles can *also* rely on outside guidance cues much more than previous generation of missiles. The accentuation is there to show they work just fine even without outside cues, but in such cases they'd likely waste most of their ample range.
 

Tam

Brigadier
Registered Member
Longer reach of radar seeker makes sense only up to a point. Once you hit a certain range, lets say 50 km or 100 km against most targets, adding range on top of that is not AS meaningful as adding other abilities to the missile. So if a smaller radar seeker can achieve a certain goal, and allow another *potent* seeker (IIR one) to be added in parallel, then the overall abilities of the missiles are more useful than having just a really strong long range radar seeker, but not having an IIR seeker or relying on just a IR seeker with a small array.

Today's missiles can *also* rely on outside guidance cues much more than previous generation of missiles. The accentuation is there to show they work just fine even without outside cues, but in such cases they'd likely waste most of their ample range.


It's never about seeker range. If you're sea skimming, the missile won't see the target anyway due to the radar horizon, and it has to rise about it. That happens around 30km to 40km.

The point of having a more powerful and frequency agile seeker is to deal with the sea clutter interference from the sea surface which you have to add the effects of ECM and other interfering radio sources in the battle environment. Further more, more small modern ships are also getting stealthier and having lower profiles, and all these factors do interact and compound over one another. These stealthy frigates, corvettes and FACs are becoming more of a threat and you have these in the Taiwan and SCS sector, no need to tell you which boats and ships are these.

IIR is another terminal seeker and that does not add something extra other than further countering ECM resistance and littoral sea clutter. IIR and IR are terminal seekers, and it does not provide the midphase guidance needed for longer ranges. This falls to the realm of datalinks and supporting spotting assets like UAVs or satellites. This also falls to the realm of passive radio directional finding, which is an important sector of ESM. The missile acts like an ARM, tracking and following the enemy signals, or a ship tracks the target passively by the target's emissions and uses directional finding, then connects to the missile via datalink.
 

bjj_starter

New Member
Registered Member
While EW is sort of a black box, and so I won't get into anything specific, I'd like to note that the upcoming SEWIP and its SLQ-32(V)6 make multi-modal guidance very useful. A seeker only needs to be able to acquire and home onto a target, and if a full-size seeker is overcompensating for a non-jamming target, but isn't capable of out-EPing a jamming target, multi-modal guidance is the happy medium.


I think you're overestimating it lol, I picked it up in a couple years when I was younger, and our linguists pick it up in a year flat, with fluency in 1.5-2 years easy.
Can I ask what your process was for learning Chinese? I'm currently trying to learn, from English as a native language.
 

by78

General
More images of the improved YJ-83 with dual infrared and radar seekers.

52309575537_c60476c222_k.jpg
52310825475_461597a11d_k.jpg
52309575622_705eadd766_k.jpg
52309575647_4377d07ee5_k.jpg
 

Tam

Brigadier
Registered Member
More images of the improved YJ-83 with dual infrared and radar seekers.

52309575537_c60476c222_k.jpg
52310825475_461597a11d_k.jpg
52309575622_705eadd766_k.jpg
52309575647_4377d07ee5_k.jpg


If they are using IIR systems, I might assume the 056A might have some high speed streaming datalink that may allow the operators to view through the IR camera of the missile that can be used to identify and authoritatively approve or disapprove targeting the target.
 
Top