Very interesting, but I wonder why no mention of any type of lander/impactor/penetrator was made in the EJSM Joint Summary Report. The Titan mission had 3 in situ elements...I always wondered why the Jupiter team left any mention of in situ out of their reports.
Didn't Mars 96 have two penetrators onboard? IIRC, these were supposed to use the inflatable descent system developed by Lavochkin.G. Clark