The ViS ViS-3 is a

high wing A monoplane is a fixed-wing aircraft A fixed-wing aircraft is a heavier-than-air aircraft, such as an airplane, which is capable of flight using aerodynamic lift. Fixed-wing aircraft are distinct from rotary-wing aircraft (in which a r ...

, single-engine

ultralight Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with aile ...

, designed and built in

Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...

. The production version is designated as KhAZ-30 (ХАЗ-30).

Design and development

The ViS-3 is a two-seat, side by side, conventionally laid out

high-wing monoplane. It first flew on 8 October 2006 and its flight test programme led through the revised ViS-5 to the Kharkiv State Aviation Plant built KhAZ-30 (ХАЗ-30) production aircraft, which first appeared in public on 22 May 2012. The development programme has brought small but significant changes to the design, chiefly in the removal of forward sweep and the addition of dihedral and

flap Flap may refer to: Arts, entertainment, and media * ''Flap'' (film), a 1970 American film * Flap, a boss character in the arcade game '' Gaiapolis'' * Flap, a minor character in the film '' Little Nemo: Adventures in Slumberland'' Biology and h ...

s. It is mostly of metal construction, though with fabric-covered wings. These have straight edges and constant chord and are braced by a single streamlined strut on each side, forward leaning from the lower

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

to the wing. The

is noticeably shallow, with a long cabin glazed ahead and behind the wing, both above and to the sides. A

Rotax 912 The Rotax 912 is a horizontally-opposed four-cylinder, naturally-aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, la ...

ULS

flat four engine A flat-four engine, also known as a horizontally opposed-four engine or boxer engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the box ...

in the nose drives a three-blade

propeller A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working flu ...

. The rectangular

tailplane A tailplane, also known as a horizontal stabilizer, is a small lift (force), lifting surface located on the tail (empennage) behind the main lifting surfaces of a fixed-wing aircraft as well as other non-fixed-wing aircraft such as helicopters ...

is set well back; the ViS-3 had mass balanced

elevator An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems suc ...

s, developed on the ViS-5 to include aerodynamic (horn) balances and slightly increased in span. There is a tall

fin A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. F ...

and

rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw ...

, also straight-edged but swept; the rudder has a prominent

trim tab Trim tabs are small surfaces connected to the trailing edge of a larger Flight control surfaces, control surface on a boat or aircraft, used to control the trim of the controls, i.e. to counteract hydro- or aerodynamic forces and stabilise the ...

. A fixed

tricycle undercarriage Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', that is arranged in a tricycle fashion. The tricycle arrangement has one or more nose wheels in a single front undercarriage and two or more main wheels slightly aft of th ...

has spring

cantilever A cantilever is a rigid structural element that extends horizontally and is unsupported at one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilev ...

main legs and cantilever-mounted, castoring nosewheel.

Variants

Data from Jane's All the World's Aircraft 2013-14, p. 656-7 ;ViS-3: First prototype, flown 8 October 2006. ;ViS-5: Production prototype. Unswept wings with flaps and span less than ViS-3, length greater. ;KhAZ-30 (ХАЗ-30): Designation of production aircraft. heavier empty, 16% greater fuel capacity than ViS-3. Public debut 22 May 2012.

Specifications (ViS-3)

References

{{KhAI aircraft 2000s Ukrainian ultralight aircraft Kharkiv Aviation Factory aircraft High-wing aircraft Single-engined tractor aircraft Single-engined piston aircraft Aircraft with fixed tricycle landing gear Aircraft first flown in 2006