Rolandas Kalinauskas RK-5 Ruth
| RK-5 Ruth | |
|---|---|
| Role | Light aircraft |
| National origin | Lithuania |
| Manufacturer | Rolandas Kalinauskas |
| Status | In production (2012) |
| Number built | at least one |
| Unit cost |
€40,000 (2011) |
The Rolandas Kalinauskas RK-5 Ruth, also called the Viltis (English: hope), is a Lithuanian light aircraft, designed and produced by Rolandas Kalinauskas, of Prienai. The aircraft is supplied as a complete ready-to-fly-aircraft.[1]
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 four-seat enclosed cabin accessed via doors, fixed tricycle landing gear and a single engine in tractor configuration.[1]
The aircraft fuselage is made from welded steel tubing supplemented by wooden stringers, while the wing is of wooden structure, all covered in doped aircraft fabric. The 11 m (36.1 ft) span wing has an area of 15.2 m2 (164 sq ft) and mounts flaps. The wing is supported by a single strut on each side with a single jury strut. The standard engine employed is the 140 hp (104 kW) Avia M 332 four-cylinder, inverted, air-cooled, supercharged, inline, four-stroke powerplant.[1][2]
The aircraft has an empty weight of 450 kg (990 lb) and a gross weight of 900 kg (2,000 lb), giving a useful load of 450 kg (990 lb). It is supplied with a wide range of standard equipment, including leather seats and tinted windows.[1]
Specifications (RK-5)
Data from Bayerl[1]
General characteristics
- Crew: one
- Capacity: three passengers
- Wingspan: 11 m (36 ft 1 in)
- Wing area: 15.2 m2 (164 sq ft)
- Empty weight: 450 kg (992 lb)
- Gross weight: 900 kg (1,984 lb)
- Fuel capacity: 130 litres (29 imp gal; 34 US gal)
- Powerplant: 1 × Avia M 332 four cylinder, inverted, air-cooled, supercharged, inline four-stroke aircraft engine, 100 kW (140 hp)
- Propellers: 2-bladed wooden, electrically adjustable, 1.8 m (5 ft 11 in) diameter
Performance
- Maximum speed: 230 km/h (143 mph; 124 kn)
- Cruising speed: 195 km/h (121 mph; 105 kn)
- Stall speed: 62 km/h (39 mph; 33 kn)
- Rate of climb: 4 m/s (790 ft/min)
- Wing loading: 59.2 kg/m2 (12.1 lb/sq ft)