1. Hydraulic dashpot or
single port shock absorber (high stopping force at the start of the
2. Springs and rubber pads (high stopping force at end of stroke).
3. Air buffers, pneumatic cylinder cushions (high stopping force at end of stroke).
4. Shock absorber used in the ISIS Recoil Damper (linear Deceleration through the entire stroke).
Assumption: same energy absorption (area under curve).
Result: The reaction force (Q) transmitted by the shock absorber is very much lower.
Result: The shock absorber used in the ISIS stops the moving load (gun) in a much shorter time (t).
Result: The shock absorber used in the ISIS can absorb considerably more energy (Represented by area under the curve in darker blue).