The Büttner Crazy Flyer (also called the Crazy Flier) is a family of one and two-seat German

powered parachute A powered parachute, often abbreviated PPC, and also called a motorized parachute or paraplane, is a type of aircraft that consists of a parafoil with a motor and wheels. The FAA defines a powered parachute as ''a powered aircraft a flexible or ...

s designed and produced by

Büttner Propeller Büttner Propeller, also known as Gerald Büttner - Obernkirchen, is a German aircraft manufacturer based in Obernkirchen and founded by Gerald Büttner. The company specializes in the design and manufacture of powered parachutes, paramotors a ...

Obernkirchen Obernkirchen () is a town in the district of Schaumburg, in Lower Saxony, Germany. It is situated approximately 8 km southwest of Stadthagen, and 15 km east of Minden Minden () is a middle-sized town in the very north-east of Nort ...

. The aircraft are supplied complete and ready-to-fly, but without wings.Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 80. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X

Design and development

The Crazy Flyer 2 two-seater was designed to comply with the

Fédération Aéronautique Internationale The World Air Sports Federation (; FAI) is the world governing body for air sports, and also stewards definitions regarding human spaceflight. It was founded on 14 October 1905, and is headquartered in Lausanne, Switzerland. It maintains worl ...

microlight Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with ailer ...

category, including the category's maximum gross weight of . The Crazy Flyer 2 features two-seats-in-

tandem Tandem, or in tandem, is an arrangement in which two or more animals, machines, or people are lined up one behind another, all facing in the same direction. ''Tandem'' can also be used more generally to refer to any group of persons or objects w ...

accommodation,

tricycle landing gear Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', that is arranged in a tricycle fashion. The tricycle arrangement has one or more nose wheels in a single front undercarriage and two or more main wheels slightly aft of th ...

and a single

Hirth 2704 The Hirth 2704 and 2706 are a family of Inline engine (aviation), in-line twin cylinder, two stroke, carburetor, carburetted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft and especially two seat ultral ...

engine in

pusher configuration In aeronautical and naval engineering, pusher configuration is the term used to describe a drivetrain of air- or watercraft with propulsion device(s) after the engine(s). This is in contrast to the more conventional tractor configuration, wh ...

. The aircraft carriage is built from triangulated bolted

aluminium Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

tubing. The main landing gear incorporates spring rod suspension. A variety of

parachute A parachute is a device designed to slow an object's descent through an atmosphere by creating Drag (physics), drag or aerodynamic Lift (force), lift. It is primarily used to safely support people exiting aircraft at height, but also serves va ...

-style wings from different manufacturers can be used.

Variants

;Crazy Flyer 1 :Single seat version powered by a

Hirth F33 The Hirth F-33 is a single cylinder, two stroke, carburetted aircraft engine designed for use on ultralight aircraft, including powered paragliders and ultralight trikes. the engine is noted for its extremely light base weight of . It is ma ...

motor ;Crazy Flyer 2 :Two seat version powered by a

motor

Specifications (Crazy Flyer 2)

References

External links

* {{DEFAULTSORT:Buttner Crazy Flyer Crazy Flyer 2000s German sport aircraft 2000s German ultralight aircraft Single-engined pusher aircraft Powered parachutes