The Brändli BX-2 Cherry is two-seat

sport Sport is a physical activity or game, often Competition, competitive and organization, organized, that maintains or improves physical ability and skills. Sport may provide enjoyment to participants and entertainment to spectators. The numbe ...

homebuilt aircraft Homebuilt aircraft, also known as amateur-built aircraft or kit planes, are constructed by persons for whom this is not a professional activity. These aircraft may be constructed from "scratch", from plans, or from assembly kits.Armstrong, Kenn ...

, designed by Max Brändli. More than one hundred had been constructed by 2010. Cherry BX-2

Design and development

Max Brändli designed the Cherry in 1979 when he was 55 years old and started its construction in his cellar. He carried out all the structural and aerodynamic calculations and supervised the building, which took 3½ years and 5,500 hours of work. He also flew it on its first flight on 24 April 1982. The Cherry is a

low wing A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing config ...

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

. It has a wood-framed fuselage and wings with wooden spars,

styrofoam Styrofoam is a brand of closed-cell extruded polystyrene foam (XPS), manufactured to provide continuous building insulation board used in walls, roofs, and foundations as thermal insulation and as a water barrier. This material is light blue in ...

cores and

glass fibre Glass fiber ( or glass fibre) is a material consisting of numerous extremely fine fibers of glass. Glassmakers throughout history have experimented with glass fibers, but mass manufacture of glass fiber was only made possible with the inventio ...

covering. The inner sections of the wings have constant chord and carry flaps; the outer sections are straight tapered with

ailerons An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement around ...

. The wings can be removed rapidly for transport. The tail surfaces are straight tapered and the

stabilator A stabilator is a fully movable aircraft horizontal stabilizer (aircraft), stabilizer. It serves the usual functions of longitudinal stability, control and stick force requirements otherwise performed by the separate parts of a conventional hori ...

is fitted with a full-span

anti-servo tab A servo tab is a small hinged device installed on an aircraft control surface to assist the movement of the control surfaces. Introduced by the German firm Flettner, servo tabs were formerly known as Flettner tabs. Servo tabs are not true se ...

. The Cherry seats two, in

side-by-side configuration 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 ...

under a large, almost fully transparent, forward sliding

canopy Canopy may refer to: Plants * Canopy (biology), aboveground portion of plant community or crop (including forests) * Canopy (grape), aboveground portion of grapes Religion and ceremonies * Baldachin or canopy of state, typically placed over an a ...

. It has a retractable

tricycle undercarriage 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 ...

, with simple, outward folding main gear. A non-retractable undercarriage is an option. The prototype was powered by a 65 hp (49 kW)

Continental A65 The Continental O-170 engine is the collective military designation for a family of small aircraft engines, known under the company designation of A50, A65, A75 and A80. The line was designed and built by Teledyne Continental Motors, Continental ...

flat four A flat-four engine, also known as a horizontally opposed-four engine or boxer engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the box ...

engine; since then, Cherrys have used flat fours with power of up to 100 hp (75 kW), including some from the Continental range, the Volkswagen-derived Limbach L.2400 and the

Rotax 912 The Rotax 912 is a horizontally-opposed four-cylinder, naturally-aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, la ...

. Also the flat 2-cylinder motorcycle derived

BMW R1200GS The BMW R1200GS and R1200GS Adventure ("R1200GSA") are motorcycles manufactured in Berlin, Germany by BMW Motorrad, part of the BMW group. It is one of the BMW GS family of dual sport motorcycles. Both motorcycles have a , two-cylinder boxer eng ...

has been used.

Operational history

The Cherry is kit-built from plans, with some components provided. By 2010, more than 240 sets of plans had been sold and over 100 aircraft completed. In mid-2010, 76 were registered in Europe west of Russia, flying in

Austria Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...

, the

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

, the

Netherlands , Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...

Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...

Slovenia Slovenia, officially the Republic of Slovenia, is a country in Central Europe. It borders Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the south and southeast, and a short (46.6 km) coastline within the Adriati ...

and the UK. The prototype Cherry, ''HB-YBX'' flew around Europe for 25 years; in 2009, it crashed after take-off from Sundsvall-Härnösand Airport in

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

, killing both Dani Gerwer and its designer, Max Brändli.

Specifications

References

{{DEFAULTSORT:Brandli Bx-2 Cherry 1980s Swiss civil aircraft Single-engined tractor aircraft Low-wing aircraft Homebuilt aircraft