Büttner Crazy Flyer

Last updated
Crazy Flyer
Role Powered parachute
National origin Germany
Manufacturer Büttner Propeller
Status In production (2015)
Unit cost
14.543 (Crazy Flyer 2, less wing, 2004)

The Büttner Crazy Flyer (also called the Crazy Flier) is a family of one and two-seat German powered parachutes designed and produced by Büttner Propeller of Obernkirchen. The aircraft are supplied complete and ready-to-fly, but without wings. [1]

Germany Federal parliamentary republic in central-western Europe

Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.

Powered parachute parachute with motor and wheels

A powered parachute, often abbreviated PPC, and also called a motorised parachute or paraplane, is a type of aircraft that consists of a parachute with a motor and wheels. The aircraft's airspeed is typically about 25–35 mph (40–60 km/h). PPCs operate safely at heights ranging from a few feet off the ground to altitudes as high as 10,000+ ft (5.5 km), but typical operating heights are between 500 and 1500 feet above ground level (AGL). Equipped with a standard 5 or 10 gallon fuel tank, PPCs can typically be flown for about three hours before requiring refueling. They have very short take-off and landing rolls, sometimes less than 100 ft. PPCs are among the least expensive aerial vehicles. A new one-person powered parachute may cost as little as $10,000, though double-seaters more typically cost about $20,000. Top end two-seater PPCs usually cost $25,000–$35,000. Empty weight is typically around 200–300 lb (90–135 kg) and payload can be upwards of 500 lb (225 kg). In the United States, many of the smallest single-seat PPCs are flown under 14 C.F.R. § 103 of the Federal Aviation Regulations, which allows them to be flown without a license or flight instruction. Flight instruction is, however, highly recommended, and an average student can learn to fly a PPC safely with 5 to 10 hours of flight instruction. Two-seat PPCs are light sport aircraft in the United States. The pilot must have at least a sport pilot certificate issued by the FAA to fly them. A minimum of 12 hours of flight instruction, including 2 hours of solo as a student pilot, is required to obtain this certificate. Powered parachuting is not to be confused with powered paragliding.

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 and aircraft propellers. The aircraft are ready-to-fly designs for the European Fédération Aéronautique Internationale microlight and 120 kg categories.

Contents

Design and development

The Crazy Flyer 2 two-seater was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of 450 kg (992 lb). The Crazy Flyer 2 features two-seats-in-tandem accommodation, tricycle landing gear and a single 53 hp (40 kW) Hirth 2704 engine in pusher configuration. [1]

<i>Fédération Aéronautique Internationale</i> voluntary association

The Fédération aéronautique internationale, is the world governing body for air sports. It was founded on 14 October 1905, and is headquartered in Lausanne, Switzerland. It maintains world records for aeronautical activities including ballooning, aeromodeling, unmanned aerial vehicles (drones) and also for human spaceflight.

Tandem arrangement in which people, machines, or animals are in line behind one another facing forward

Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction.

Tricycle landing gear aircraft undercarriage arranged with main gear under the wing or fuselage and a third set under the nose

Tricycle gear is a type of aircraft undercarriage, or landing gear, arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle gear aircraft are the easiest to take-off, land and taxi, and consequently the configuration is the most widely used on aircraft.

The aircraft carriage is built from triangulated bolted aluminium tubing. The main landing gear incorporates spring rod suspension. A variety of parachute-style wings from different manufacturers can be used. [1]

Aluminium Chemical element with atomic number 13

Aluminium or aluminum is a chemical element with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic and ductile metal in the boron group. By mass, aluminium makes up about 8% of the Earth's crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. The chief ore of aluminium is bauxite. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.

Parachute device used to slow the motion of an object through an atmosphere

A parachute is a device used to slow the motion of an object through an atmosphere by creating drag. Parachutes are usually made out of light, strong fabric, originally silk, now most commonly nylon. They are typically dome-shaped, but vary, with rectangles, inverted domes, and others found. A variety of loads are attached to parachutes, including people, food, equipment, space capsules, and bombs.

Variants

Crazy Flyer 1
Single seat version powered by a Hirth F33 30 hp (22 kW) motor [1]
Crazy Flyer 2
Two seat version powered by a Hirth 2704 53 hp (40 kW) motor [1]

Specifications (Crazy Flyer 2)

Data from Bertrand [1]

General characteristics

The Hirth 2704 and 2706 are a family of in-line twin cylinder, two stroke, carburetted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft and especially two seat ultralight trainers, single seat gyrocopters and small homebuilts.

Aircraft engine Engine designed for use in powered aircraft

An aircraft engine is a component of the propulsion system for an aircraft that generates mechanical power. Aircraft engines are almost always either lightweight piston engines or gas turbines, except for small multicopter UAVs which are almost always electric aircraft.

Performance

  • Maximum speed: 52 km/h (32 mph; 28 kn)

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References

  1. 1 2 3 4 5 6 Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 80. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X