Related terms:
westland sioux
helicopter's
ducted fan
collective pitch
notar system
these helicopters
single main rotor
rotor diameter
two rotors
military utility transport helicopter
electronic speed control
initial bell
electronic speed
training helicopter
dornier flugzeugwerke
coaxial rotors
rescue hoist
yaw control
rotor head
hp lycoming
originally designated
bell model
stretchers
elastomeric
first helicopter
commercial model
avco lycoming
Wikipedia sources:
Tail rotor
T-Rex (RC helicopter)
Helicopter rotor
Bell UH-1 Iroquois
Bell H-13 Sioux
Bell 47
Hughes TH-55 Osage
Context for words:
tail
boom
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