The mechanism is purely mechanical and operated by springs, and is thus not subject to {TAIL ~ any} of the problems encountered by {HEAD ~ electronic or pyrotechnically actuated separation devices} 
The mechanism is purely mechanical and operated by springs , and is thus not subject to { TAIL ~ any } of the problems encountered by { HEAD ~ electronic or pyrotechnically actuated separation devices }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD