The Aviastroitel AC-4 Russia is a Russian

mid-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 planes. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

, single-seat

glider Glider may refer to: Aircraft and transport Aircraft * Glider (aircraft), heavier-than-air aircraft primarily intended for unpowered flight ** Glider (sailplane), a rigid-winged glider aircraft with an undercarriage, used in the sport of glidin ...

designed by Vladimir Egorovich Fedorov and produced by Aircraft Cooperative Mechta, which became Aviastroitel, now Glider Air Craft. The aircraft is sometimes referred to as the Federov AC-4 Russia, Mechta AC-4, Fedorov Me7 Mechta, Kenilworth Me7, AS+ Ltd AC-4 or Aircraft Cooperative Mechta AC-4 Russia. It is currently marketed as the Glider Air Craft Solo AC-4.Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 54. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X

Design and development

The aircraft started out in 1989 as Fedorov's "Dream" project for the OSTIV World Class Sailplane 1993 design contest. It went through several design prototypes, named Mechta I, Mechta II and Russia I and II. The Russia II was the version submitted to the competition. The bid involved forming a new concern, the ''Aircraft Cooperative Mechta'' and building three hand-made prototypes. The aircraft performed well in the competition and the fly-off held in

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, but only came in second place, behind the Polish

Politechnika Warszawska PW-5 The Politechnika Warszawska PW-5 ''Smyk'' ( Polish: "Little rascal") is a single seater sailplane designed at the Warsaw University of Technology (Polish: "Politechnika Warszawska") and manufactured in Poland. It is a monotype World Class glider. ...

. The American team at the competition was very impressed with the Russian design, thought it would sell well for Club class and student solo flying and bought one of the three prototypes to take home with them. The aircraft proved popular and so a US distributorship under the name ''Russia 12.6'' was set up to sell the Russian production. Since the Aircraft Cooperative Mechta could not mass-produce the aircraft they reformed as Aviastroitel. In 1994 US distribution was transferred to ''Mechta Sailplanes, LLC'', which imported 18 Russia gliders. Aviastroitel created a second set of molds to respond to the demand and started a second assembly line with a total production capacity of 48 AC-4s per year. In 1997 William Ayd became US distributor under the name ''Russia Sailplanes, Inc.'' Production of the AC-4 was suspended in 2003 when the Russian government changed the requirements for industrial production, making building them uneconomical. In 2010 Aviastroitel became Glider Air Craft and production resumed. The aircraft is made from

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. Its span wing employs a Wortmann FX-60-157 airfoil. The AC-4 can be fitted with a McCulloch MC-101B

two-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of ...

engine of that will sustain flight. A

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parachute is optional. Sixty Russias were completed, some as complete non-certified aircraft and some as

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for amateur construction.

Operational history

In August 2011 there were 42 Russias registered in the

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, five in the

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and two in

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Variants

;Mechta I :Initial 1989 prototype with wing span. ;Mechta II :1991 prototype with wing span. ;Russia I :1992 prototype with wing span. ;Russia II :1992 prototype with wing span. ;AC-4A Russia :First production model introduced in 1993, with a wing span and taildragger landing gear. ;AC-4B Russia Instruments012AC4B

:Model with the main wheel set further back and a nose wheel. Also incorporates a larger cockpit for taller pilots. Introduced in 1996. ;AC-4C Russia :Improved model with retractable landing gear. Introduced in 1997. ;AC-4CK Russia :Improved model delivered as a kit. ;AC-4D Russia :Improved model with

winglet Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft' ...

s. ;AC-4M :Motor glider model with a retractable engine, which was used as the prototype for the AC-5M. Introduced in 1999. ;Solo AC-4 :Current production model.

Specifications (AC-4)

References

External links