7.3 AIRCRAFT TECHNICAL DESCRIPTION
7.3.1 AIRFRAME :
Strut-braced high-wing monoplane, with braced aluminum alloy cage structure,
composite fuselage pod and aluminum boom supporting conventional tail surfaces.
Glass-fiber/epoxy semi-monocoque fuselage pod with optional gull-wing doors.
Wings can be easy dismount and horizontal tail surfaces can be quickly folded for transportation and
storage.
7.3.2 FUSELAGE
has a simple strength all-metal basic structure - with a ridge beam ∅ 120 x 2 mm and box
top beam with hinges of wings and engine mounting and upper cross beam with undercarriage and strut
hinges, both riveted from aluminum alloy plates.
Airframe structure is connected through aluminum alloy tubes.
7.3.3 COMPOSITE CANOPY
-fuselage fairing with integral seats, floor and instrument panel cover has
the fixed center part of windshield, which is usable for flying in the open air without doors. Two
dismountable side doors with large windows are opened through gas struts and lockable.
7.3.4 WINGS
have aluminum tube spars and aluminum alloy pressed ribs, 100 % double surface Ceconite
fabric covered.
Airfoil NACA 4412 for EX version with composite leading edge, high-lift airfoil P3 for UL version,
with small composite leading edge.
40% span ailerons, controlled through torsion tube.
7.3.5 TAIL
is classical cables braced cross-type, with flat profile, riveted and screw-connected from aluminum
alloy tubes and Al profiles and covered by hot-air stressed fabric.
Elevator can be weight balanced, with wire-controlled trim-tab. Horizontal tail surfaces have foldable
hinges, to be able quickly folded to fin for transportation.
Rudder is controlled through wires in plastic tubes (without any pulleys).
7.3.6 THREE-AXIS CONTROL:
40% span ailerons, elevator with trim tab, and rudder.
Classical dual CONTROL with control sticks between pilots and dual rudder pedals with optional brakes
drivers for left side pilot.
Elevator and ailerons are controlled through rods and levers system, rudder and trim tab through cables.
Rudder control is connected with nose wheel steering.
Dual throttle is located on the both sides of canopy, elevator trim-tab handle and engine control is located
on the central panel
between both pilots.
7.3.7 LANDING GEAR:
Non-retractable tricycle type, with hydro-pneumatic shock absorbers.
Main wheels 16x3", nose wheel 12x3".
Steerable nose gear
with rubber block shock absorbers.
Standard nose gear with Drum Toe Brakes, controlled by handle on the joystick.
Main wheels with hydraulic disc brakes, controlled separately by pedal drivers for option.
7.3.8 POWER PLANT:
Standard 48 kW (65 hp) Rotax 582 UL - DCDI two-cylinder two-stroke
engine with 2.58:1 Rotax “B” reduction gearbox, mounted on the top flat area of inter-wing axial
beam, riveted from aluminum alloy sheets.
Standard pusher 3-blade GFK- on the ground adjustable propeller and electric starter for EX version ,
two blade fixed wooden propeller Křemen SR 26 with rewind starter for UL version.
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