Interesting. The Mk 41 seems closer the 054A VLS than the 055's
both in size (at least length and width) and configuration. The "usable" volume of the UVLS on the 055 might be a little less than it appears since the gas venting has to take up some volume along the inner walls the cell instead of passing the missile exhaust through a flame trench.
I think it's been established for a while that the Mk-41 VLS and the 054A VLS are very similar in configuration and deckspace footprint, but always good to review it.
For the UVLS, it is capable of hot and cold launch;
- For hot launch, it is via a concentric canister launch method where the vent is within the cell itself, and as you correctly point out it causes the effective cross section of each VLS to be reduced for the venting. YJ-18 is launched via this method.
- For cold launch however, they should be able to use the entire cross section of each VLS, while at the cost of reducing the length slightly by having a cold launch mechanism eject it out of the cell. That means they can still use up the vast majority of the length of each cell (particularly the 9m long variant), and the entirety of each cell's cross section (area) as well, allowing the diameter of a missile payload to theoretically be able to use the whole VLS' cross section.
Allowing for both hot and cold launch really is the best of both worlds.
Is there any other VLS system that can do both hot and cold ?
Total UVLS in various stages of construction and service ~2500
25 x 64 (052d) - 1600
8 x 112 (055) ~ 900
Its about time someone thought of quad packing these things with medium range, cheap SARH missiles.
Maybe not - or not by a lot. Just by dint of launching circular (cylindrical) missiles from square cells means there's some unused volume to play with (around 21.4% or (1 - π/4)*100 of the volume of the cell). Perhaps that's enough to safely vent the exhaust gas without damaging the missile/cell. They're not directly comparable, but the Avangard test launch shows a characteristic "four corners" venting pattern that would be expected from such a configuration.- For hot launch, it is via a concentric canister launch method where the vent is within the cell itself, and as you correctly point out it causes the effective cross section of each VLS to be reduced for the venting. YJ-18 is launched via this method.
Maybe not - or not by a lot. Just by dint of launching circular (cylindrical) missiles from square cells means there's some unused volume to play with (around 21.4% or (1 - π/4)*100 of the volume of the cell). Perhaps that's enough to safely vent the exhaust gas without damaging the missile/cell. They're not directly comparable, but the Avangard test launch shows a characteristic "four corners" venting pattern that would be expected from such a configuration.
Total UVLS in various stages of construction and service ~2500
25 x 64 (052d) - 1600
8 x 112 (055) ~ 900
Its about time someone thought of quad packing these things with medium range, cheap SARH missiles.
Dimension limitations will be
Diameter = <30 cm
Length = <5m
Weight = 350-400 kg
Warhead = 30-40 kg
Whats the closest existing missile to this configuration?