Description (download PDF presentation)

The high-speed amphibious hovercraft PARMA 11 (project PM11) is designed to transport up to 950 kg of cargo or up to 10 passengers. The hovercraft belongs to the class of small passenger hovercraft and is designed to transport passengers across water bodies in summer or winter, including with short-term access to the shore. The boat is capable of overcoming smoothed ledges up to 60 cm high and not smoothed ones — up to 50 cm. The boat is capable of reaching speeds on the water of about 70 km/h.
Operation is permitted at outside air temperatures from -40ºS to +30ºS and a maximum wind speed of up to 12 m/s at any time of the year during daylight hours. The Hovercraft, under all load conditions, can be operated during daylight hours in water areas, with waves not exceeding 1.2 m 1% probability. The movement of the boat is allowed at the specified wave both in hovercraft mode and in displacement mode. When driving on ice or snowy surfaces, operation is permitted on all bodies of water. Operation on any other flat, hard surface, extremely shallow water and swampy surfaces is permitted.

Main dimensions and characteristics

Housing

The hull of the vessel is made waterproof, divided into 5 waterproof compartments by 5 waterproof bulkheads.
Sheets and profiles made of aluminum alloys are used as the material for the main hull, frame, and foundations. Rolled sheets are used grade Amg5M, GOST 21631-76. Profile steel grade Amg6M or D16T according to GOST 8617-75. The hovercraft body is riveted (with the exception of small parts made by welding). The tightness of the outer contour of the boat and the corresponding transverse bulkheads is ensured. The impermeability test is carried out in accordance with the test diagram and table. Protection of the housing from corrosion is ensured by the use of aluminum-magnesium alloys that are resistant to corrosion in river and sea water. Additionally, it is planned to paint the outer and inner surfaces of the body with paints and varnishes.

Salon

The passenger cabin is equipped in the front part with two soft passenger chairs, including one for the captain.
Four double lifting sofas-lockers are installed along the sides, under which life jackets and property are located. The sofa covers can be folded out to form a sleeping area measuring 1800×2000 mm in the aft part of the cabin. The arrangement of armchairs and sofas may vary. There is an option with soft seats for all passengers.
The cabin is made of a three-layer structure, the middle layer of which is insulation. The outer layer is made of fiberglass based on polyester resin with fiberglass reinforcing material, coated with colored resin (gelcoat). The middle layer is made of honeycomb filler. The inner layer is made of fiberglass, covered with lining — soft leatherette.

Engine

The hovercraft is equipped with two Volzhsky Automobile Plant VAZ-21126 engines, each with a power of 98 hp. To increase service life and reduce fuel consumption, the engines are derated to 80 hp. by reducing the maximum speed to 4800 rpm. It is possible to increase power to 106 hp. by increasing the maximum crankshaft speed to 5800 rpm.
The engine is four-stroke, with distributed fuel injection, in-line, with an overhead camshaft. The engine cooling system is liquid, closed type, with forced circulation of liquid. The engine has a combined lubrication system: under pressure and splash.
Engine 21126 is a continuation of the VAZ 21124 ten-seater engine, but with a 39% lighter ShPG produced by Federal Mogul, the holes for the valves have become smaller, and a different timing belt with an automatic tensioner, thanks to which the problem of tightening the belt on the 124 block has been solved. The Priora engine block itself has also undergone minor changes, such as better surface treatment, cylinder honing is now carried out in accordance with the more stringent requirements of Federal Mogul.
The ignition system consists of individual ignition coils installed on the cylinder head cover and spark plugs. The ignition coils are controlled by the electronic engine control unit (ECU).
The engine uses a new automatic timing belt tensioning mechanism with rollers of a new design. By switching to a Gates timing belt with a new profile, the engine uses new camshaft pulleys, a water pump pulley and a crankshaft pulley. The pulley profile corresponds to a timing belt with a semicircular tooth.
For the electronic engine control system, a controller M 7.9.7 or JANUARY 7.2 is installed.