GURPS 3e/V2e question: Explosive Reactive Armor weight

[Rupert]

Originally Posted by GURPS Fox

I must be using the wrong surface area, as I was using the SF on the bottom of a GVB sheet.

... and 90 pounds per square foot!?! That's insane.

It seems rather heavy, but it's not insane - it's about 2-1/4 inches of steel per square foot. That seems far too much for even a heavy RAP, but it's not outright insane as armour weights go.

The normal RAP weight seems very light to me - 8 lbs per square foot for a metal box that encases another metal plate and a layer of explosive for the weight of 0.2" of steel seems questionable.

[GURPS Fox]

Originally Posted by Rupert

It seems rather heavy, but it's not insane - it's about 2-1/4 inches of steel per square foot. That seems far too much for even a heavy RAP, but it's not outright insane as armour weights go.

The normal RAP weight seems very light to me - 8 lbs per square foot for a metal box that encases another metal plate and a layer of explosive for the weight of 0.2" of steel seems questionable.

In terms of explosive reactive armor, yes it's insane. What little I could google indicates that even 'heavy' ERA is far lighter than what GURPS assumes.