The Arrow Coax Livella Uno () is a German

helicopter A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes ...

under development by Arrow Coax Ultra Light Helicopter of

Hornhausen Hornhausen is a village and a former municipality in the Börde district in Saxony-Anhalt, Germany. Since 1 July 2009, it is part of the town Oschersleben Oschersleben () is a town in the Börde district, in Saxony-Anhalt, Germany. The popul ...

and introduced at the

AERO Friedrichshafen AERO Friedrichshafen is a trade show dedicated to European general aviation. It is held yearly in April on the shores of Lake Constance at the exhibition center of Friedrichshafen, Germany right next to Friedrichshafen Airport Friedrichshaf ...

airshow in 2015. The aircraft is intended to be supplied as a kit for amateur construction.Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 204. Flying Pages Europe SARL, 2015.

Design and development

The Livella Uno was designed to comply with the US

FAR 103 Ultralight Vehicles Ultralight aircraft in the United States are much smaller and lighter than ultralight aircraft as defined by all other countries. In the United States, ultralights are described as "ultralight vehicles" and not as aircraft. They are not requ ...

and the European 120 kg class ultralight aircraft rules. It features a dual coaxial main rotors, with an

inverted V-tail The V-tail or ''Vee-tail'' (sometimes called a butterfly tail or Rudlicki's V-tailGudmundsson S. (2013). "General Aviation Aircraft Design: Applied Methods and Procedures" (Reprint). Butterworth-Heinemann. p. 489. , 9780123973290) of an aircraft ...

, a single open-air pilot's seat without a windshield,

tricycle landing gear 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 g ...

and a

Wankel Wankel may refer to: * Wankel engine, a type of internal combustion engine using an eccentric rotary design instead of reciprocating pistons * Wankel AG, a German company that produces Wankel engines for ultralight aircraft and racing cars People ...

Aixro XH40 engine. The aircraft

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 ...

is made from tubing. Its two-bladed rotors have a diameter of . The aircraft has a typical empty weight of and a gross weight of , giving a useful load of . The aircraft mounts a Galaxy Rescue System

ballistic parachute A ballistic parachute, ballistic reserve parachute, or emergency ballistic reserve parachute, is a parachute ejected from its casing by a small explosion, much like that used in an ejection seat. The advantage of the ballistic parachute over a co ...

in the rotor mast. It also has a small

electric motor An electric motor is an Electric machine, electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a Electromagneti ...

to power the rotor system from a battery in the event of an engine failure, allowing five minutes of power to land, since the low inertia rotor blades may not support

autorotation Autorotation is a state of flight in which the main rotor system of a helicopter or other rotary-wing aircraft turns by the action of air moving up through the rotor, as with an autogyro, rather than engine power driving the rotor. Bensen, Igor ...

Specifications (Livella Uno)

References

External links

Photo of the Livella Uno prototype
{Dead link, date=June 2020 , bot=InternetArchiveBot , fix-attempted=yes Livella Uno 2010s German sport aircraft 2010s German ultralight aircraft 2010s German helicopters Homebuilt aircraft Wankel-engined helicopters Rotary-engined aircraft Coaxial rotor helicopters

Design and development

Specifications (Livella Uno)

See also

References

External links