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