Comment by a_vanderbilt
1 year ago
More or less all of these yes. I always found it ironic how the new Javelin is believed to be cheaper because the components are less mechanical and easier to source. The continued support especially. Military systems can be designed (and warrantied) to last decades if maintained properly - and that costs the big bucks.
During wartime, it may be better to design for a short lifespan. Build the seeker with ordinary AA batteries welded in instead of thermal batteries with a standby life of decades. If it's intended for Ukraine or Taiwan, skip the part temperature range that would allow the thing to sit in the sun for a year in Iraq. Seal up the unit and stencil it "NO USER SERVICEABLE PARTS INSIDE" and "USE BEFORE 2026-12-31". It will have been fired at the enemy long before then.
It isn't as simple as "make a new design with a shorter lifespan" either. These systems are intended to work the first time every time, and every change introduces numerous second-order consequences. You swapped the batteries? Great the balance of the missile now changed and we have to re-calculate the flight dynamics. Remove some shielding and conformal coating? Now the thermal properties have changed on the control boards and the welds are cracking due to different heat propagation. We certainly could make them cheap and dirty, but their reliability and consistency would suffer. The last thing you want is to shoot a missile and piss off the guy on the receiving end, who isn't dead but is now very motivated to get revenge.
Considering that WW2 artillery shells were used all the way into th 70s and 80s, you might rethink that.
Ukraine is out of ammunition NOW. If the war suddenly ends and they have to dispose of warheads that will expire soon, that is a cost that can be paid. But more importantly for them is ammunition now, if that can be achieved by making the build process simple, it should probably be done.
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