SU-31 & SU-31M
The Sukhoi Su-31 is the latest single seater from Sukhoi. It has the highest performance of any piston engined aircraft made, and with the Su-26, has dominated international aerobatic competitions.
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, ie everything behind the cockpit, is composite rather than tubular steel. This reduces the weight by some 10kgs, which is significant in an aircraft of this sort. Other differences are:
aircraft has a similar fuel system to the Su-26 in that it has a fuselage 70
litre tank, which is the aerobatic tank.
Long-range fuel tanks are usually installed in the wings (total of 206 litres
extra), which is very convenient, but with some weight penalty.
Conversely, the extra fuel can be in long-range detachable ‘belly
tanks’ of up to 200 litres.
3 additional luggage areas built in the Su-31, which make it quite exceptional
for an aircraft of this sort:
A bay behind the pilot
A separate compartment in front of the pilot, above the fuselage fuel
In a separate bay in front of the instrument panel, where a specially
designed ‘suitcase’ can be quickly installed and then carried away from the
of flying qualities, the –31 is designed to be somewhat more unstable than the
Su-26 – although this is only really a matter of degree – which makes it
more suitable for free-style flying, and certainly a great deal easier to
snap-roll than the Su-26.
canopy is side-opening, which means that it can be opened with the engine
idling, which can be a great benefit in very hot weather while an aircraft is
waiting for take-off.
other Sukhois, the Su-31 can use either the 360hp M14P or the 400hp M14PF, as
well as the more powerful 430hp M9F and 450hp M14R engines, although as a
practicality most aircraft have the more powerful engines fitted.
Su-31 has continued the extraordinary competition track record of the Su-26,
winning successive World and European championships in both men’s and
women’s categories as well as successive Breitling Championships.
Production of the Su-31 stopped in 2005.
360 or 400 hp
Spar factory test ±23G
Rate of climb
3600 (4200 with 400 hp)
Takeoff run @ sl
Minimum weight 120 yds
A major advance by Sukhoi has
been the installation of the Zvesda Pilot Extraction System, which is a
remarkable system and the latest version adds only 12kgs to the total weight of
an aircraft, yet provides the ability for the pilot to be totally free of an
aircraft in difficulty in ¼ of a second. This is only available during
manufacture of the Su-31 and costs an additional Euro 15,000.
We can provide full technical details of the system.
For Sukhoi Service Bulletins Click Here