- Bensen B-9
__NOTOC__ Infobox Aircraft
name=B-9 Little Zipster
caption=
type=Recreational helicopter
national origin=USA
manufacturer=Bensen Aircraft for homebuilding
designer=Igor Bensen
first flight=avyear|1958
introduced=
retired=
status=
primary user=
more users=
produced=
number built=
variants with their own articles=The Bensen B-9 Little Zipster was a small helicopter developed byIgor Bensen in the United States in the 1950s and marketed for home building. Similar in general configuration to Bensen's previous rotor kite and autogyro designs, it consisted of an open aluminum framework but substituted the autorotating main rotor for a coaxial, counter-rotating system of two, two-bladed rotors. A large tailfin provided directional stability, and the aircraft was controlled by a handlebar system extending over the pilot's head to the rotor hub.pecifications
aerospecs
ref=
met or eng?= engcrew=One pilot
capacity=
length m=3.51
length ft=11
length in=6
span m=
span ft=
span in=
swept m=
swept ft=
swept in=
rot number= 2
rot dia m= 6.71
rot dia ft= 22
rot dia in= 0
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=
height ft=
height in=
wing area sqm=
wing area sqft=
swept area sqm=
swept area sqft=
rot area sqm= 64.5
rot area sqft= 694
volume m3=
volume ft3=
aspect ratio=
empty weight kg=200
empty weight lb=450
gross weight kg=320
gross weight lb=700
lift kg=
lift lb=eng1 number=1
eng1 type=Mercury engine
eng1 kw= 55
eng1 hp= 70
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
eng2 number=
eng2 type=
eng2 kw=
eng2 hp=
eng2 kn=
eng2 lbf=
eng2 kn-ab=
eng2 lbf-ab=max speed kmh=130
max speed mph=80
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=160
range miles=100
endurance h=
endurance min=
ceiling m=3,400
ceiling ft=11,000
glide ratio=
climb rate ms=4.6
climb rate ftmin=900
sink rate ms=
sink rate ftmin=armament1=
armament2=
armament3=
armament4=
armament5=
armament6= aircontent
see also=
related=
similar aircraft=
lists=References
* [https://thewaves.securesites.net/x-tra_items/zipster/ Vortech page on B-9]
*
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