The ViS ViS-3 is a

high wing A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...

, 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 ailer ...

, designed and built in

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

. 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 he ...

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 ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraft t ...

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, late ...

ULS

flat four engine A flat-four engine, also known as a horizontally opposed-four 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 boxer-four engine, ...

in the nose drives a three-blade

propeller A propeller (colloquially 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 ...

. The rectangular

tailplane A tailplane, also known as a horizontal stabiliser, is a small 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 and gyroplane ...

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

elevator An elevator or lift is a wire rope, cable-assisted, hydraulic cylinder-assisted, or roller-track assisted machine that vertically transports people or freight between floors, levels, or deck (building), decks of a building, watercraft, ...

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. Fin ...

and

rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other vehicle that moves through a fluid medium (generally aircraft, air or watercraft, water). On an aircraft the rudder is used primarily to ...

, 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 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 boat or aircraft in a pa ...

. A fixed

tricycle undercarriage Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle ge ...

has spring

cantilever A cantilever is a rigid structural element that extends horizontally and is supported at only 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 canti ...

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

{{reflist, refs= {{cite book , title= Jane's All the World's Aircraft : development & production : 2013-14, last= Jackson , first= Paul A. , year=2013, publisher=IHS Global, isbn=978-0-7106-3040-7 , pages=656–657 2000s Ukrainian ultralight aircraft Kharkiv Aviation Factory aircraft