eitje
NAUCHNO-KOMMERCHESKY FIRMA
TECHNOAVIA (Technoavia Scientific and
Commercial Firm)
TECHNOAVIA SM-92 FINIST
TYPE: Light multipurpose STOL aircraft.
PROGRAMME: Design, to FAR Pt 23 and JAR 23 standards, started July 1992; construction of first of
two prototypes (RA-44482) began January 1993; first flight, as SM-92 Finist (name of a magical bird
that was transformed into a prince), made 28 December 1993; second Finist (RA-44484) completed
round-the-world flight through Europe, Atlantic, Canada, Alaska and Siberia in August 1995;
components production at SmAZ, Smolensk; assembly by VAPO at Voronezh; attempts to interest
overseas licencees most recently (late 1998) involved Cuba. Sixth aircraft (RA-44493) completed as
SM-92P armed version (described separately). PT6 and Walter M 101 E turboprop versions under
consideration, with possible assembly of former in Canada. AP-23 certification received by late 1998.
CURRENT VERSIONS: Basic aircraft accommodates up to seven persons with baggage. Convertible under
field conditions to transport 600 kg (1,323 lb) freight; two stretcher patients and attendant with
medical equipment; to drop six trainee parachutists or four firefighters with parachutes and
firefighting equipment. Can carry hopper for 600 kg (1,323 lb) agricultural chemicals in cabin, with
spraybars, or cameras for forest surveillance, patrolling electric power lines, gas pipeline inspection
and similar duties.
CUSTOMERS: Ten ordered, seven built by beginning 1997; no further information received. First
delivery (aircraft No. 3, RA-44485) to Mike Crymble in UK, 21 January 1995; RA-44487 to Sport-
Para Centrum, Antwerp, Belgium, 6 July 1995.
COSTS: US$160,000 to US$200,000 (1998).
DESIGN FEATURES: In approximate class of out-of-production DHC-2 Beaver, but less powerful and
lower in cost than most used Beavers. Sweptback fin and rudder; small dorsal fin; tailplane mounted
on fin, with single bracing strut each side. Wide CG range.
Special wing section by Technoavia and CAHI (TsAGI). No sweep; thickness/chord ratio 15 per
cent; dihedral 2º; incidence 3º at root, 1º at tip.
FLYING CONTROLS: Conventional and manual. Ailerons and elevators pushrod- actuated; rudder cableactuated.
Electrically operated, three-position (0º, 20º, 40º), two-section single-slotted flaps on each
wing; horn-balanced rudder and elevators, with fluted skin; large trim tab in starboard elevator;
ground adjustable tab on ailerons and rudder.
STRUCTURE: All-aluminium, stressed-skin semi-monocoque construction. Simple, reliable structure,
with no expensive or exotic materials; repair possible under field conditions. Airframe life 10,000
hours or 20,000 landings, with `on condition' extension.
LANDING GEAR: Non-retractable tailwheel type with medium-pressure mainwheel tyres, size 600 ×
180 mm on KT-317 wheels. Cantilever faired tubular steel main legs; steerable, semi-castoring
tailwheel with 255 × 110 mm tyre on tubular steel strut. Tyre pressure 2.45 bars (35.5 lb/sq in) on
mainwheels; 2.95 bars (43 lb/sq in) on tailwheel. Wheel/skis and amphibious or plain floats optional.
Pedal-operated disc brakes, with parking lock. Minimum turning radius 6.6 m (21 ft 8 in).
POWER PLANT: One VOKBM M-14X air-cooled nine-cylinder radial engine, rated at 265 kW (355 hp)
for take-off and 213 kW (286 hp) maximum continuous, driving a Mühlbauer MTV-3 three-blade
variable-pitch propeller. Engine TBO 1,000 hours; total life 3,000 hours. Two fuel tanks in wing
leading-edge; usable capacity 380 litres (100.4 US gallons; 83.5 Imp gallons). Oil capacity 24 litres
(6.3 US gallons; 5.3 Imp gallons).
ACCOMMODATION: Pilot and six passengers, in pairs; quickly removable seats with folding armrests and
back; dual controls standard for pilot training; adjustable rudder pedals. Small baggage container (or
medical equipment stowage for ambulance version) on port side at rear of cabin. Forward-hinged,
jettisonable door each side of flight deck; large rearward-sliding passenger/freight door on port side of
cabin, openable in flight. Blister windows to flight deck and cabin. Steps on mainwheel legs and cable
handholds for access to flight deck; removable tubular steel ladder beneath cabin door.
Convertible in field to transport 600 kg (1,323 lb) of freight; two stretcher patients and two
attendants; six trainee parachutists or four smoke-jumpers with parachutes and firefighting equipment.
Provision for carrying hopper for 600 kg (1,323 lb) of agricultural chemicals in cabin, or cameras for
forest surveillance, patrolling electric power lines, gas pipeline inspection and similar duties.
Clearance adequate for underbelly pannier. Cabin heated and ventilated.
SYSTEMS: Pneumatic system for engine starting, pressure 49 bars (710 lb/sq in). Electrical system
provides 36/115 V AC power at 400 Hz and 28.5 V DC power, with 20NKBN-25 battery.
AVIONICS: Comms: Two AlliedSignal KY 96A VHF transceivers, KA-134 audio system, KR 87A ADF
and KT-76A transponder; Garmin GPS 150.
