The main beam supports and their struts are connected with frame by bolts and additionally fixed rods. Wheel set of skis (200×60 mm), two of them — the main — feature disc brakes. Although better would be “quilted”, calculated at the desired load.
When mounting the wing panels to their spar joined to the engine cradle, and then fixed with struts.
The front of the plane is connected with the tail of the farm, which is a four beams from dural pipes in diameter of 30 mm and a wall thickness of 1…1.5 mm. the Rear ends of the lower beams are fastened together by brackets, which are installed on top of the headstock to the tail
tail. The front ends of the beams (upper and lower) have ferrules, for connections with nodes hanging on the root ribs of the wing and the struts of the trolley. The upper beam are connected with the lower brackets pairs, too.
Mount the tail is assembled using three nodes located in the lower part of the rear wall of the keel and on the toes of the planes stabilizator.
Doing a lot of years to improve stability at low speeds and landing characteristics of their aircraft, came to the conclusion that the wing need to do the reverse sweep and a well-mechanized.
The basis of the power set of the wing are two I beam side rail with walls made of fiberglass 1.5 mm thick and shelves made from pine slats with a cross-section 18×12 mm to the root of the cross-section 18×18 mm at the site of attachment of the strut and section 18×6 mm — tail. Toe console sewn glass-textolite sheet of thickness 0.25 mm. the Rest of the surface (including tail) is covered with a nylon fabric, on which to stretch applied enamel. The relative thickness of the airfoil — 14%.
The front edge of the wing equipped with a slat, occupying 1 m in length and 15% of SAH (mean aerodynamic chord). Slat and flap are interconnected via rocking two cables that provide their simultaneous extension and retraction.
Trendeleva flap (34% SAH) is deflected downwards by 60°, and the shank 22° 30′.
Double slit Aileron (35% SAH) is deflected upwards by 23°, and down to 16° (the shank at 16° and 11° respectively). It is associated with the spoiler, which after raising the Aileron at an angle over 10° opening upwards by 45°.
Stabilizer empennage is made in the adaptive scheme, according to which the deviation dvuhmetrovoe of the Elevator up to 35° down 23° (shank 17° and 11°, respectively) is the deflection and the middle part of the stabilizer 6…9°, which leads to a change in the configuration of the profile and angle of attack. This scheme allows, for example, the pilot quickly restore the horizontal flight regime when the inevitable “peck” of the aircraft at the time of issue of mechanization of the wing.
Management system rudders, and the elements of mechanization are practically identical — to the root ribs she rope (steel wire rope diameter is 1.8…2.0 mm), after them is hard, consisting of rods and servo horns (D16T sheet thickness of 1.5…3.0 mm).
Of course, the disadvantages enough, but on the basis of the design of this apparatus, it is possible to build planes special purpose.
V. DMITRIEV, Mikhailovka, Volgograd region.