Classifying : kinds: anti-torque rotary systems: * Tails: A) Conventional B) Fenestron C) Notar D)Tip jet * Dual Rotors: A) Tandem B) Coaxial C) Intermeshing D) Transverse 2.-models by companies: A) Sirkosky: 19 approx B) Bell: 16 approx C) Robinson: 4 approx D) Boeing: 6 approx. C) others: ???? total models mentioned so far: 35 approx 3.- total number of helicopters currently in use by companies: Sirkorsky:??? Bell:??? Boeing:??? Robinson:??? Others??? so far???
Yes, they had many kinds of helicopters in 1955
There are hundreds of different helicopters.
Many police stations have helicopters. Many do not have helicopters, because they probably can not afford to buy or lease one.
Yes, they have many helicopters in Wisconsin.
Many helicopters have storage and cargo spaces.
Yes, many helicopters have radar.
The USMC currently has about 600 helicopters
helicopters have all kinds of jobs, mainly involving landing in tight spots.
there are 134 helicopters in the meuseum of flight
Helicopters carry from 1 - 90 passengers
There were no helicopters in WW1
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