The Sukhoi SU-31 is the most agile and powerful aerobatic aircraft in production today. This single-seat aircraft has the highest power-to-weight ratio of any piston engine aircraft, giving the SU-31 truly unbelievable sustained vertical line. Although the Su-31 is physically similar to the SU-26, it is actually really quite different. The main difference being that the entire fuselage, is everything behind the cockpit, is composite rather than tubular steel. This reduces the weight by some 30 kg's, which is very significant in an aircraft of this sort.

Current Versions of the Sukhoi Su-31:

Su-31:	Basic version; non-retractable landing gear. Alternatively known as Su-31T (Turnirnyi: Competition).
Su-31M:	As Su-31T but with Zvezda SKS-94 pilot's extraction system under modified canopy with deeper frame. Empty weight 760 kg; normal T-O weight 880 kg. Prototype RA-01486 converted from Su-31T.
Su-31M2:	Available from 2000 (first production batch of five). M-9F engine; lightened structure.
Su-31X:	Export version of Su-31T.

Developing nation:	Russia.
Manufacturer/designer:	Sukhoi Design Bureau/Sukhoi Advanced Technologies.
Production line:	Moscow.
Type aircraft:	unlimited aerobatic competition aircraft.
First flight:	June 1992.
Cockpit:	one pilot.
Wing span	7,80 m.
Wing area:	11,80 m².
Wing sweep:	5.2 degrees.
Fuselage length:	6,90 m.
Height:	2,76 m.
Horizontal tail unit:	2,90 m.
Wheelbase:	4,90 m.
Track:	2,40 m.
Engines:	one VOKBM M-14PF nine-cylinder radial engine rated 294 KW.
Propeller:	MTV-9 three-blade propeller diameter 2.50 m.
Weight:	740 Kg.
Fuel:	fuselage tank capacity 53 liters.
	wing tank capacity 209 liters.
Max. take off weight:	968 Kg.
Take-off speed:	110 km/h.
Landing speed:	115 km/h.
Max. speed:	450 km/h.
Service ceiling:	4.000 m.
Max rate of roll:	400°/sec.
G-limits:	+12/-10 m.
Range:	max. range 740 - 1.200 km.
Performance:	max. rate of climb at sea level 1.440 m per minute.
Take-off run:	110 m.
Landing run:	300 m.