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Elitar Sigma
The Elitar Sigma or Elitar (Samara VVV-Avia) Sigma is a single engine light aircraft of wing and boom layout, seating two in side-by-side configuration. It was designed and built in Russia where production continued until at least 2010.
==Design and development==
Design of the Sigma, then known as the Sigma-4, began in 1991 at the Sigma design bureau though it was later associated with the Albatros bureau. From 2003 it was marketed by Elitar, a bureau formed in 1997. Manufacture of the eighth and later aircraft has been at the Samara based VVV-Avia factory.〔
The Sigma is a metal framed aircraft with largely composite skin, though with metal on the fin and fabric covering on the ailerons, which have GRP noses. The flaps are also GRP structures. The wing has constant chord, 1.5° of dihedral and a full span combination of flaps and ailerons. The exposed boom aft of the wing trailing edge is slender and carries the rectangular horizontal tail surfaces, large triangular fin and parallel chord rudder, plus a small ventral fin. A Rotax 912 ULS flat four engine is mounted above the wing position and forward of its leading edge.〔〔Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 84. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X〕
The teardrop shaped pod is mounted below the wing and braced to it, with a single faired lift strut on each side from its lower part. Access to the side-by-side seating is by large glazed doors. There is a luggage area behind the seats and a rear transparency. The tricycle undercarriage is short, placing the Sigma close to the ground. All wheels are on cantilever spring legs and enclosed by fairings. The nosewheel leg is horizontal and the wheel casters. The Sigma can also be configured as a floatplane, the floats attached with a complex of struts. A MVEN K-600-00 ballistic recovery parachute is standard on Russian aircraft.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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