PZL-104 Wilga 35A
The PZL-104 was designed for robust use in sports, civil aviation, with a strong emphasis on glider-towing and parachute training. The prototype of the initial Wilga mark 1 variant was first flown on April 24 1962 and was engined with an existing Polish 220 hp horizontally opposed engine the PZL WN-6RB. The Wilga 1 prototype exposed a number of design faults, the most serious of which was excesive weight and a rear view restriction such that the crew could not easily see a towed glider. This resulted in an airframe review that thoroughly redesigned the aerocraft led by Bronisław Żurakowski and Andrzej Frydrychewicz.
All aluminium construction the airplane is based on a main plane high-wing cantilever STOL monoplane, configuration with conventional aeroplan layout. The main aero cabin is constructed of dur-alumnium rivited together and corrogated to increase strenght and durability of the low mass Semi-monocoque fuselage. The main airfoil is a rectangular style single-spar wing, fitted with slotted flaps and anti-stall slats. The four seat cabin is fitted with two large side doors, opening upwards to facilitate large load, rapid entry/exit. the main wheels are attached to an articulated, conventional fixed pnuematic shock landing gear with heavy duty sprung tail wheel. A Two-blade composite wood propeller with bonded metal leading edges are afixed to the propeller on the soviet built engine. The newer models use full metal propellers on North American Continental O-470 Aero engines. There are also two fuel tanks are in the wings (195 L/42.9IGal one side and /51.5USGal on the other).
General characteristics
- Crew: 1
- Capacity: 3
- Length: 8.10 m (26 ft 6 in)
- Wingspan: 11.12 m (36 ft 5 in)
- Height: 2.96 m (5 ft 8 in)
- Wing area: 15.50 m² (166.85 ft²)
- Empty weight: 900 kg (1984 lb)
- Gross weight: 1300 kg (2868 lb)
- Powerplant: 1 × Ivchenko AI-14RA air-cooled 9-
- cylinder radial piston engine, 194 kW (260 hp)
Performance
- Maximum speed: 195 km/h (121 mph)
- Range: 670 km (416 miles)
- Service ceiling: 4040 m (13,255 ft)
- Rate of climb: 5.5 m/s (1082 ft/min)
