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