Rocket-propelled core sampler - with exchangeable nozzle for underwater geological formations

摘要

Appts. which can be lowered on ropes, for the removal of soil samples from underwater geological formations, by means of a recoverable core sampling tube driven into the ground by a rocket propellant system, which can be adapted to the depth of water by varying the cross section and/or widening ratio of the rocket nozzle. More especially, the rocket propulsion system is a solid fuel rocket with a removable nozzle holder in which the nozzle is exchangeably mounted.