HTM Skytrac

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Infobox Aircraft
name=Skytrac, Skyrider


caption=
type=Utility helicopter
national origin=Germany
manufacturer=Wagner, HTM
designer=
first flight=July avyear|1965
introduced=
retired=
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variants with their own articles=The HTM Skytrac (originally known as the Wagner Skytrac) was a light utility helicopter developed in Germany in the 1960s and 70s. A late version was known as the Skyrider. Despite achieving certification from the German aviation authorities and firm orders from customers, the type was never produced in series.

Development commenced in the mid 1960s as an offshoot of the Wagner firm's attempts to develop a roadable helicopter, and utilised the same coaxial dynamic components that had been developed for that project. The Skytrac featured a narrow single-seat cabin at one end of a box-like "keel" structure, a horizontally-mounted Franklin flat-6 engine at the other end, and the transmission and rotor mast between them. The pilot's seat was enclosed by a sliding, bubble canopy. The prototype flew in this form in July 1965, and was followed by a second machine with pontoons and a V-tail at the end of a boom for improved directional control. The third prototype had three seats in a more conventional cabin structure, and was fitted with spray bars and chemical tanks for demonstration of the type's potential as an agricultural machine. Certification of the design was achieved in 1969.

In 1971, the newly-formed HTM took over the manufacture and marketing of the Skytrac, announcing in mid 1972 that a production line was being established at Jesenwang with the intention of producing 35 machines by the end of 1973, all of which had found buyers. After this initial batch, HTM planned to sell licences to produce the design in batches of 30 machines each. None of this was to come to pass, however, as HTM was unable to finance the production of the first batch of aircraft.

The final development was the Skyrider, which enclosed the Skytrac into a full fuselage with seating for four. Mockups of this configuration were displayed at the Hanover and Cannes airshows in 1972, and a prototype was flown in February 1974. It was possible to convert the basic Skytrac into a Skyrider in a matter of only a few hours' work. By the following year, however, HTM was out of business, and no further examples were ever constructed.

pecifications (Skytrac)

aerospecs
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met or eng?= met

crew=One pilot
capacity=2 passengers
length m=4.00
length ft=13
length in=2
span m=
span ft=
span in=
swept m=
swept ft=
swept in=
rot number= 1
rot dia m= 10.40
rot dia ft= 34
rot dia in= 1
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=3.80
height ft=12
height in=6
wing area sqm=
wing area sqft=
swept area sqm=
swept area sqft=
rot area sqm= 84.9
rot area sqft= 914
volume m3=
volume ft3=
aspect ratio=
empty weight kg=850
empty weight lb=1,870
gross weight kg=1,500
gross weight lb=3,300
lift kg=
lift lb=

eng1 number=1
eng1 type=Franklin 6AS-335-B
eng1 kw= 195
eng1 hp= 260
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=160
max speed mph=100
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=400
range miles=250
endurance h=
endurance min=
ceiling m=3,500
ceiling ft=11,000
glide ratio=
climb rate ms=2.0
climb rate ftmin=400
sink rate ms=
sink rate ftmin=

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References

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