1. Design and development

2. Specifications (Viper with Hazard 12 wing)

3. References

4. External links

The Eurofly Viper is an Italian ultralight trike, designed and produced by Eurofly Srl of Galliera Veneta. The aircraft is supplied as a complete ready-to-fly-aircraft.^[1]

Design and development

The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of {{convert|450|kg|lb|0|abbr=on}}. The Viper has a maximum gross weight of {{convert|450|kg|lb|0|abbr=on}}. It features a cable-braced hang glider-style high-wing, weight-shift controls, a two-seats-in-tandem open cockpit, tricycle landing gear with wheel pants and a single engine in pusher configuration.^[1]

The aircraft is made from welded tubing, with its double surface wing covered in Dacron sailcloth. Its {{convert|10.5|m|ft|1|abbr=on}} span Skyrider Hazard 12 wing is supported by a single tube-type kingpost and uses an "A" frame weight-shift control bar. The standard powerplant is a twin cylinder, liquid-cooled, two-stroke, dual-ignition {{convert|64|hp|kW|0|abbr=on}} Rotax 582 engine, with the twin cylinder, air-cooled, two-stroke, dual-ignition {{convert|50|hp|kW|0|abbr=on}} Rotax 503 engine optional. The Viper has an empty weight of {{convert|126|kg|lb|0|abbr=on}} and a gross weight of {{convert|450|kg|lb|0|abbr=on}}, giving a useful load of {{convert|324|kg|lb|0|abbr=on}}. With full fuel of {{convert|65|l}} the payload is {{convert|277|kg|lb|0|abbr=on}}.^[1]

A number of different wings can be fitted to the basic carriage, including the Skyrider Hazard 12 and Hazard 15. A {{convert|70|l}} fuel tank is optional.^[1]

A basic version of the aircraft, powered by the {{convert|50|hp|kW|0|abbr=on}} Rotax 503 engine and without fairings is also offered.^[1]

Specifications (Viper with Hazard 12 wing)

|genhide=
|crew=one
|capacity=one passenger
|length m=
|length ft=
|length in=
|length note=
|span m=10.5
|span ft=
|span in=
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=12
|wing area sqft=
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=126
|empty weight lb=
|empty weight note=
|gross weight kg=450
|gross weight lb=
|gross weight note=
|fuel capacity={{convert|65|l}}
|more general=

|eng1 number=1
|eng1 name=Rotax 582
|eng1 type= twin cylinder, liquid-cooled, two stroke aircraft engine
|eng1 kw=48
|eng1 hp=
|prop blade number=2
|prop name=wooden
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=

|perfhide=
|max speed kmh=160
|max speed mph=
|max speed kts=
|max speed note=
|cruise speed kmh=125
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=48
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=8
|climb rate ftmin=
|climb rate note=
|time to altitude=
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=37.5
|wing loading lb/sqft=
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}

References

External links

• {{Official website|http://www.euroflyulm.com/it/}}

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