The Rolandas Kalinauskas RK-5 Ruth, also called the Viltis ( en, hope), is a Lithuanian

light aircraft A light aircraft is an aircraft that has a maximum gross takeoff weight of or less.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 308. Aviation Supplies & Academics, 1997. Light aircraft are used as utility aircraft co ...

, designed and produced by Rolandas Kalinauskas, of

Prienai Prienai () is a city in Lithuania situated on the Nemunas River, south of Kaunas. In 2011 the city had 9,867 inhabitants. The name of the city is a derivative from a surname ''Prienas''. Pociūnai Airport is associated with the city. History ...

. The aircraft is supplied as a complete ready-to-fly-aircraft.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 168. WDLA UK, Lancaster UK, 2011. ISSN 1368-485XTacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 158. Flying Pages Europe SARL, 2015.

Design and development

The RK-5 is derived from the Rolandas Kalinauskas RK-3 Wind. The RK-5 features a strut-braced

high 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 confi ...

, a four-seat enclosed cabin accessed via doors, fixed

tricycle landing gear 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 g ...

and a single engine in

tractor configuration In aviation, the term tractor configuration refers to an aircraft constructed in the standard configuration with its engine mounted with the propeller in front of it so that the aircraft is "pulled" through the air. Oppositely, the pusher co ...

. The aircraft

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraf ...

is made from welded steel tubing supplemented by wooden stringers, while the wing is of wooden structure, all covered in doped

aircraft fabric Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

. The span wing has an area of and mounts flaps. The wing is supported by a single strut on each side with a single

jury strut In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of strut, which act in ...

. The standard engine employed is the Avia M 332 four-cylinder, inverted, air-cooled, supercharged, inline, four-stroke powerplant. The aircraft has an empty weight of and a gross weight of , giving a useful load of . It is supplied with a wide range of standard equipment, including leather seats and tinted windows.

Specifications (RK-5)

References

External links

* {{Rolandas Kalinauskas aircraft 2000s Lithuanian ultralight aircraft Single-engined tractor aircraft