PZL SW-4

The PZL SW-4 is a Polish light single-engine multipurpose helicopter manufactured by PZL Swidnik.

Development

Work on the new helicopter design, lighter than the Mil Mi-2, started in Poland in the late 1980s. The Mi-2, produced in PZL Swidnik, was a standard small helicopter in former Eastern bloc countries, but it was quite big and uneconomical for many tasks. The program was slowed by lack of funds, but finally the first prototype (registration SP-PSW) was flown on October 29, 1996. The second prototype (SP-PSZ) was flown in 1998 and shown at the Paris Le Bourget salon in 2001.

In 2003 the Polish Air Forces ordered the first helicopter, with an option for further 30, for use as trainers. The first serial helicopter was shown on November 15, 2004.

The helicopter is meant for production for a civilian or military market.

Specifications

General Characteristics

Crew: one pilot

Capacity: four passengers

Length (with main rotor): 10.57 m (34 ft 8 in)

Main rotor diameter: 9.00 m (29 ft 6 in)

Height: 3.05 m (10 ft 0 in)

Main rotor area: 464 m² (4,992 ft²)

Empty: 1,050 kg (2,310 lb)

Loaded: 1,600 kg (3,520 lb)

Maximum takeoff: 1,800 kg (3,960 lb)

Powerplant: 1x Allison 250-C20R/2 turboshaft, 336 kW (457 shp)

Performance

Maximum speed: 260 km/h (162 mph)

Range: 790 km (493 mph)

Service ceiling: 5,200 m (17,056 ft)

Rate of climb: 618 m/min (2,027 ft/min)

Main rotor loading: 3.4 kg/m² (0.7 lb/ft²)

Power/Mass: 0.21 kW/kg (0.13 hp/lb)

External links

Description on manufacturer's page

PZL SW-4

PZL SW-4

Development

Specifications

General Characteristics

Performance

External links

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