Duruble Edelweiss

Last updated
Edelweiss
Role Utility aircraft
Manufacturer Homebuilt
Designer Roland T. Duruble
First flight 7 July 1962
Number built at least 10 by 1985

The Duruble Edelweiss is a light utility aircraft designed in France in the early 1960s and marketed for homebuilding. It is a low-wing cantilever monoplane with retractable tricycle undercarriage and all-metal construction. The aircraft was designed for a load factor of 9. [1] Two- and four-seat versions were designed. The aircraft's creator, Roland Duruble flew the first example, a two-seater designated RD-02 in 1962, and in 1970 began to market plans for a stretched version with a rear bench seat as the RD-03. Over the next 15 years, 56 sets of plans had been sold, and at least nine Edelweisses finished and flown. In the 1980s, Duruble marketed an updated version of his original two-seater as the RD-02A, and sold around seven sets of plans, with at least one aircraft flying by 1985.

France Republic with mainland in Europe and numerous oversea territories

France, officially the French Republic, is a country whose territory consists of metropolitan France in Western Europe and several overseas regions and territories. The metropolitan area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is bordered by Belgium, Luxembourg and Germany to the northeast, Switzerland and Italy to the east, and Andorra and Spain to the south. The overseas territories include French Guiana in South America and several islands in the Atlantic, Pacific and Indian oceans. The country's 18 integral regions span a combined area of 643,801 square kilometres (248,573 sq mi) and a total population of 67.3 million. France, a sovereign state, is a unitary semi-presidential republic with its capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban areas include Lyon, Marseille, Toulouse, Bordeaux, Lille and Nice.

Cantilever beam anchored at only one end

A cantilever is a rigid structural element, such as a beam or a plate, anchored at one end to a support from which it protrudes; this connection could also be perpendicular to a flat, vertical surface such as a wall. Cantilevers can also be constructed with trusses or slabs. When subjected to a structural load, the cantilever carries the load to the support where it is forced against by a moment and shear stress.

Monoplane Fixed-wing aircraft with a single main wing plane

A monoplane is a fixed-wing aircraft with a single main wing plane, in contrast to a biplane or other multiplane, each of which has multiple planes.

Contents


Variants

RD-02
RD-02A
Variant designed for homebuilt construction [2]
RD-03A
Two-seat variant with a 100 hp (75 kW) Continental O-200 engine.
RD-03B
Variant designed to have either a 135 hp (101 kW) Lycoming O-320 or Franklin Sport 4B engine. Utility variant with two seats or a normal variant with 2+2 seating.
RD-03C
Variant with a 150 hp (112 kW) Lycoming engine and increased fuel capacity. Utility variant with two-seats or a normal variant with 2+2 seating for four adults.

Specifications (typical RD-03A)

Data from Jane's all the world's aircraft, 1975-76 [3]

General characteristics

Airfoil

An airfoil or aerofoil is the cross-sectional shape of a wing, blade, or sail.

NACA airfoil

The NACA airfoils are airfoil shapes for aircraft wings developed by the National Advisory Committee for Aeronautics (NACA). The shape of the NACA airfoils is described using a series of digits following the word "NACA". The parameters in the numerical code can be entered into equations to precisely generate the cross-section of the airfoil and calculate its properties.

Continental O-200 four-cylinder horizontally-opposed piston aircraft engine family

The Continental C90 and O-200 are a family of air-cooled, horizontally opposed, four-cylinder, direct-drive aircraft engines of 201 in³ displacement, producing between 90 and 100 horsepower.

Performance

  • Maximum speed: 257 km/h (160 mph; 139 kn)
  • Cruise speed: 234 km/h (145 mph; 126 kn)
  • Stall speed: 76.5 km/h (48 mph; 41 kn) flaps down
  • Never exceed speed: 316 km/h (196 mph; 171 kn)
  • Range: 1,125 km (699 mi; 607 nmi) max fuel with 30 min reserve
  • Service ceiling: 4,570 m (14,990 ft)
  • Rate of climb: 3.3 m/s (650 ft/min)
  • Wing loading: 63 kg/m2 (13 lb/sq ft)

See also

Aircraft of comparable role, configuration and era

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References

  1. ↑ Air Progress Sport Aircraft: 74. Winter 1969.Missing or empty |title= (help)
  2. ↑ Air Trails: 76. Summer 1971.Missing or empty |title= (help)
  3. ↑ Taylor, John W.R., ed. (1975). Jane's all the world's aircraft, 1975-76 (66th annual ed.). New York: Franklin Watts Inc. ISBN   978-0531032503.

Further reading

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