avia.wikisort.org - Aeroplane

The Büttner Crazy Plane is a family of German paramotors designed by Gerald Büttner and produced by Büttner Propeller of Obernkirchen for powered paragliding. The aircraft are supplied complete and ready-to-fly.[1]

Crazy Plane
Role	Paramotor Type of aircraft
National origin	Germany
Manufacturer	Büttner Propeller
Designer	Gerald Büttner
Status	In production (2015)

Design and development

The Crazy Plane line was designed to comply with the US FAR 103 Ultralight Vehicles rules as well as European regulations. It features a paraglider-style wing, single-place or two-place-in-tandem accommodation and a single engine in pusher configuration with a reduction drive and a 115 to 135 cm (45 to 53 in) diameter Büttner Propeller designed propeller.[1]

As is the case with all paramotors, take-off and landing is accomplished by foot. Inflight steering is accomplished via handles that actuate the canopy brakes, creating roll and yaw.[1]

Variants

Crazy Plane 1

Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm (45 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional. Later called the Crazy Plane 1 S (for "Solo" engine).[1][2]

Crazy Plane 1 C

Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm (45 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional. Later called the Crazy Plane 1S (for "Solo" engine).[1][2]

Crazy Plane 2

Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.05 ratio reduction drive and a 120 cm (47 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal). Later called the Crazy Plane 2 S (for "Solo" engine).[1][2]

Crazy Plane 3

Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 124 cm (49 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal). Later called the Crazy Plane 3 S (for "Solo" engine).[1][2]

Crazy Plane 3 H

Model with a 30 hp (22 kW) Hirth F33 engine.[2]

Crazy Plane 4

Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 135 cm (53 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal).[1]

Crazy Plane Duo

Two place model with a 30 hp (22 kW) Hirth F33 engine in pusher configuration with a 2.8:1 ratio reduction drive and a 124 cm (49 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional.[1]

Crazy Plane Voyager 2 S

Model with a 20 hp (15 kW) Solo engine that folds to a smaller packing size.[2]

Crazy Plane Voyager 3 C

Model with a Cors'Air M21Y 24 hp (18 kW) engine that folds to a smaller packing size.[2]

Crazy Plane Voyager 3 H

Model with a 30 hp (22 kW) Hirth F33 engine that folds to a smaller packing size.[2]

Crazy Plane Voyager 3 S

Model with a 20 hp (15 kW) Solo engine that folds to a smaller packing size.[2]

Specifications (Crazy Plane Duo)

Data from Bertrand[1]

General characteristics

• Crew: one
• Capacity: one passenger
• Empty weight: 29.8 kg (66 lb)
• Fuel capacity: 10 litres (2.2 imp gal; 2.6 US gal)
• Powerplant: 1 × Hirth F33 single cylinder, two-stroke, air-cooled aircraft engine, with a 2.8:1 reduction drive, 22 kW (30 hp)
• Propellers: 3-bladed Büttner Propeller, 1.24 m (4 ft 1 in) diameter

References

External links

• Official website

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