Optional actuators that may refine the surface shape include an “orientation” actuator that drives {HEAD ~ rotation} about {TAIL ~ the propulsors} longitudinal axis, and a “geometry” actuator that controls each propulsors geometric configuration 
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Optional actuators that may refine the surface shape include an “ orientation ” actuator that drives { HEAD ~ rotation } about { TAIL ~ the propulsors } longitudinal axis , and a “ geometry ” actuator that controls each propulsors geometric configuration
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH