5 ms·

Killing a carrier isn't like a video game where you see a carrier on screen and issue a launch command. Killing a carrier involves a chain of events; break anyo

by greedo 7y ago

Killing a carrier isn't like a video game where you see a carrier on screen and issue a launch command. Killing a carrier involves a chain of events; break anyone of the links and the carrier is safe. First you have to locate the carrier. Easy to do in peacetime, in war time much more difficult. If you want to kill it with a ballistic missile, you need to locate it within a few square kilometers. This means either a radar location, or a satellite overhead. Radar is problematic because it has to deal with the curvature of the earth. This is typically solved by using airborne radar. Well, carriers and their airgroups are very well versed in both detecting this surveillance and killing it. Either with aircraft, with SAMs, or with cruise missiles that target that airfields of the surveillance (ISR) aircraft. So say that you somehow manage to get a location fix on a carrier battle group. Now you have to prep your missiles for launch which takes time. Let's say 30-60 min. The carrier can steam at over 30 knots, so now your targeting data is out of date. Again, not like push button warfare. Your ballistic missile now has to find the carrier in a roughly 1000 sq mile area. Fine, missiles are relatively cheap. So you just target each square mile with a missile and hope its internal radar can pick out the CVN. So you launch 1000 missiles, and just like in Battleship, one of your missiles manages to be in the right spot. Now it has to deal with the SAMs protecting the CVN. Aegis is pretty good these days, so you've got to make it past them. That'll be tough. Then you have to make it past the ESSM missiles, as well as the ECM jamming suite of every ship in the carrier group. Fine, you have robust electronics. BOOM! You've hit. But it turns out that your radar on the warhead was small, with insufficient processing power to discriminate between a carrier (especially with all the jamming going on) and an escort ship. You've sunk an LCS, or a refueler (they're big and have a big radar image), or maybe even an Arleigh Burke DDG or Tico cruiser. Sucks for those crewmates, but that's their job. Protect the carrier. And what has this failed attack cost you? Well, ballistic missiles are cheap compared to a CVN, but not that cheap. Say $5M a piece since it makes the math easier (though the DF-21 and DF-26 will cost much much more). 1000 missiles is $5B, plus the cost of all the ISR assets used to locate the CVN. Now if hypersonic missiles start to take off (pun intended) and become deployable weapon systems, it will make things more difficult. But that's still in the future.

CapricornNoble 7y ago
>>First you have to locate the carrier. ...This means either a radar location, or a satellite overhead. These aren't just "weather satellites". It's highly suspected they are capable of tracking carrier groups via infrared: https://spaceflightnow.com/2018/06/05/chinese-weather-satellite-successfully-boosted-into-orbit/ https://spaceflightnow.com/2018/06/05/chinese-weather-satell... >> Now you have to prep your missiles for launch which takes time. Let's say 30-60 min. China's DF-21D and DF-26 are solid-fueled and fired from mobile launchers. In a deliberate carrier-hunting attack the sensor-shooter killchain is also likely to be streamlined, even taking into the account that the Chinese still suck at Command & Control. Overall preptime and killchain delay should be negligible (<30 minutes for the Chinese). >>> So you just target each square mile with a missile and hope its internal radar can pick out the CVN. No. These long-range anti-carrier missiles have an almost vertical terminal trajectory and are looking down from high altitude. AN AESA's fast scanning should be able to find and fix a target with a signature as gigantic as a carrier's over a 30km-radius circle without too much difficulty. I haven't crunched the numbers on this personally, but I'll add it to my list of "radar scenarios to do the math on"... >>>But it turns out that your radar on the warhead was small, with insufficient processing power The DF-21 and DF-26 are both about 1.4m meters in diameter. You can stuff an AESA as good as any on a fighter into a nosecone that large. >>>Aegis is pretty good these days.......Then you have to make it past the ESSM missiles. Even in controlled tests we don't have that great of a pK (probability of kill aka "intercept") against high-speed ballistic missiles. The ships need to use SM-2s and SM-3s. 1x Tico + 2x Arleigh Burke are packing about 300VLS total, and that has to include Harpoons and Tomahawks. Let's assume ~250 SM-2/3s for air and missile defense. It's customary to launch 2 missiles per incoming threat (again, due to that low pK we've demonstrated) but that is still enough to stop 100 incoming (probably bigger than any realistic incoming salvo anyway). Assuming you can LAUNCH the SM-2s fast enough. Each ship would need to fire off 80+ missiles in probably 30 seconds, and I think there is a practical limit for how quickly you can fire from VLS (due to the exhausts and whatnot). It's probably something like 1-2 missiles per second, from non-adjacent cells. >>>> Say $5M a piece since it makes the math easier (though the DF-21 and DF-26 will cost much much more). 1000 missiles is $5B, plus the cost of all the ISR assets used to locate the CVN. I've seen estimates of $10-20M for DF-21/26. -200(don't need 1000) x $20M = $400M -3 x $100M(??) surveillance sats = $300M -Sinking the centerpiece of your opponent's Navy, exploiting their Critical Vulnerability to defeat their Center of Gravity, AND achieve major Information Operation success (PR victory)? Priceless.

by greedo 7y ago

CapricornNoble 7y ago

>>First you have to locate the carrier. ...This means either a radar location, or a satellite overhead. These aren't just "weather satellites". It's highly suspected they are capable of tracking carrier groups via infrared: https://spaceflightnow.com/2018/06/05/chinese-weather-satellite-successfully-boosted-into-orbit/ https://spaceflightnow.com/2018/06/05/chinese-weather-satell... >> Now you have to prep your missiles for launch which takes time. Let's say 30-60 min. China's DF-21D and DF-26 are solid-fueled and fired from mobile launchers. In a deliberate carrier-hunting attack the sensor-shooter killchain is also likely to be streamlined, even taking into the account that the Chinese still suck at Command & Control. Overall preptime and killchain delay should be negligible (<30 minutes for the Chinese). >>> So you just target each square mile with a missile and hope its internal radar can pick out the CVN. No. These long-range anti-carrier missiles have an almost vertical terminal trajectory and are looking down from high altitude. AN AESA's fast scanning should be able to find and fix a target with a signature as gigantic as a carrier's over a 30km-radius circle without too much difficulty. I haven't crunched the numbers on this personally, but I'll add it to my list of "radar scenarios to do the math on"... >>>But it turns out that your radar on the warhead was small, with insufficient processing power The DF-21 and DF-26 are both about 1.4m meters in diameter. You can stuff an AESA as good as any on a fighter into a nosecone that large. >>>Aegis is pretty good these days.......Then you have to make it past the ESSM missiles. Even in controlled tests we don't have that great of a pK (probability of kill aka "intercept") against high-speed ballistic missiles. The ships need to use SM-2s and SM-3s. 1x Tico + 2x Arleigh Burke are packing about 300VLS total, and that has to include Harpoons and Tomahawks. Let's assume ~250 SM-2/3s for air and missile defense. It's customary to launch 2 missiles per incoming threat (again, due to that low pK we've demonstrated) but that is still enough to stop 100 incoming (probably bigger than any realistic incoming salvo anyway). Assuming you can LAUNCH the SM-2s fast enough. Each ship would need to fire off 80+ missiles in probably 30 seconds, and I think there is a practical limit for how quickly you can fire from VLS (due to the exhausts and whatnot). It's probably something like 1-2 missiles per second, from non-adjacent cells. >>>> Say $5M a piece since it makes the math easier (though the DF-21 and DF-26 will cost much much more). 1000 missiles is $5B, plus the cost of all the ISR assets used to locate the CVN. I've seen estimates of $10-20M for DF-21/26. -200(don't need 1000) x $20M = $400M -3 x $100M(??) surveillance sats = $300M -Sinking the centerpiece of your opponent's Navy, exploiting their Critical Vulnerability to defeat their Center of Gravity, AND achieve major Information Operation success (PR victory)? Priceless.