This kid of stuff is incredibly hard to use for accurate results. Gels (and all materials) are not perfect in any sense, and you'd need significant effort modeling any material you used - viscosity under all sorts of motions (since nothing is nicely linear), the gel itself is sloshing, compressing, has different lag times...

It's possible in theory, but in practice would not be useful.

Look at what planes (Air Force has lots of R&D) did for the past century to see the state of the art at each point and the methods used.