FIG 3B illustrates an alternative means wherein a flexible material 310 covers the entire propulsor array 100, protecting propulsor array 100 and {TAIL ~ motor} 150 from {HEAD ~ working fluid} 130 
FIG 3B illustrates an alternative means wherein a flexible material 310 covers the entire propulsor array 100 , protecting propulsor array 100 and { TAIL ~ motor } 150 from { HEAD ~ working fluid } 130
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH