PZL SM-2 – Polish multi-purpose helicopter, developed in 1959 by the company “PZL-Swidnik”.
The design of the helicopter model PZL SM-2 was carried out by Polish aircraft designers based on the Soviet helicopter model Mi-1, which has a very similar appearance and design to this aircraft. The expanded functionality of the PZL SM-2 model provided the helicopter with rather high demand, in particular, this aircraft was widely used in both the military and civil aviation sectors.
The first development of the aircraft PZL SM-2 began by Polish engineers in 1957, and in just two years, aircraft designers managed a functional aircraft, which made its first flight in 1959, and since 1960, it began to be mass-produced.
The production of helicopters of the PZL SM-2 model was carried out until 1963, and for the entire production cycle, aircraft builders built 91 aircraft, which were most widely used in the military sphere, where they were used as a patrol vehicle, as an aircraft for transporting high-ranking officers on board officers, as well as for reconnaissance.
Among other things, the helicopter could also be used as a transport or medical air vehicle, and in some cases, as a search and rescue apparatus.
In the cockpit of the aircraft can accommodate up to 5 people, including one pilot and four passengers (military personnel), or if the helicopter is supposed to be used as a vehicle designed to carry goods – about 620 kilograms of payload.
The PZL SM-2 helicopter does not possess its armament, and therefore cannot be positioned as a combat aircraft, although initially it was assumed by aircraft developers that it was possible to install a machine gun on the helicopter to combat the enemy’s manpower.
The power plant of the aircraft model PZL SM-2 consists of one 7-cylinder radial aircraft engine brand Lit-3 or brand Ivchenko AI-26V, which has a thrust of 575 hp The power plant of the Ivchenko AI-26V brand is characterized by higher reliability, while the aircraft engine itself allows the helicopter to accelerate to a cruising speed of 130 km \ h and carry out flights at distances of up to 500 kilometers (distance).
Until 1981, helicopters of the PZL SM-2 model were in service with such countries as:
Hungary; Poland; Romania; Finland; Czechoslovakia.
To date, only a few workable copies of the PZL SM-2 model helicopter have survived around the world, most of which are museum expositions.
- Crew: 1 person;
- Capacity: 4 people;
- Length: 10.58 m.;
- Height: 3.05 m.;
- The diameter of the rotor: 9 m.;
- Empty helicopter mass: 1050 kg .;
- Maximum take-off weight: 1700 kg .;
- Cruising speed: 240 km \ h.;
- Maximum flight speed: 260 km \ h.;
- Maximum flight range: 790 km .;
- Maximum flight height: 5200 m.;
- Powerplant: Ivchenko AI-26V (depending on configuration);
- Power: 457 hp