The KR-030 Topaz is a strutless high wing.
All major airframe assemblies have a shell structure
made of composites based on glass or carbon fibre. The fuselage in the form of
a self-supporting shell stiffened locally with 3D material, houses
a double cockpit in the front part with places next to each other.
Cockpit width 1.2 m. The shell is technologically divided into two
symmetrical halves with stiffeners, and an integrated floor -
trunk plate, glued in when connecting the halves.
Seats with a shell structure made of composites. Cockpit cover - a wind-up glass
made of ultraviolet-resistant acrylic glass (PMMA polymethyl
methacrylate), side door also made of acrylic glass (PMMA), 3 mm thick,
on a composite frame.
Vertical stabilizer integral with the fuselage. Tricycle landing gear with
a front wheel. The main landing gear legs self-supporting, made of composite. Main wheels braked
together, front wheel controlled, coupled to the rudder. Optionally, the wheels
are covered with laminated fairings.
The wing is made entirely, rectangular, mounted on four
bolts. The NN-1817 profile was used for its resistance to contamination of
the leading edge, with very favorable aerodynamic characteristics -
tested on the PW - 5 "SMYK"glider. The wing structure is shell,
sandwich, with a load-bearing girder.
Slotted flaps of shell construction, hung to the wing on
outriggers, driven by the fuselage - electric, control on a joystick.
The aileron is made of carbon laminate due to the necessary high
torsional stiffness, with the smallest possible mass (anti-flutter requirements) with
a mass balance fixed at its end.
Classic horizontal tail with a rectangular contour, shell structure
made of composites. Shell rudder. Pusher control
Elevator trimmer - spring-loaded, electrically adjustable,
control on the joystick
100 l fuel tanks mounted in the wings.