An omnidirectional penetrometer for lunar surface characterization.
Omnidirectional penetrometer for lunar surface parametric impact testing and certification of safe soft-landing site for Apollo LEM
LUNAR EXCURSION MODULE /LEM/↗
Engineering topics
Publications and source records attributed to Mcclellan, R. G..
Omnidirectional penetrometer for lunar surface parametric impact testing and certification of safe soft-landing site for Apollo LEM