Connecting ducts between gas cushions can include venturis that restrict {HEAD ~ pressure pulses} in one gas cushion from traveling to {TAIL ~ another gas cushion} 
from traveling to
Connecting ducts between gas cushions can include venturis that restrict { HEAD ~ pressure pulses } in one gas cushion from traveling to { TAIL ~ another gas cushion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL