Last summer, the head asiacruise Vnukovo house of culture (Moscow) Amateur pilot, Andrey Chernikov demonstrated are designed and built with his own hands a single biplane rather complicated maneuvers over the airfield Expanse in the Vladimir region.
The plane does not yet have a certificate of airworthiness due to financial and organizational difficulties. However, it was built in accordance with the requirements for aircraft of this type. Today Andrey is your plane the readers of our website.
Before proceeding to describe the structure of the aircraft, will have to talk a little bit about the history of its creation And it was created ultralight aircraft (ULTRALIGHTS or ultralight) in the circle of aviation at Vnukovo DK. Guys, as in other similar clubs, has built various sports models were (and not without success) in the competition. Mastering the basics of the theory and practice of aircraft, the club came to the idea of building this aircraft, however small, on which it would be possible to climb into the sky.
The next step was the selection scheme of the aircraft, its layout and design.
First, what guided the choice of design is its cost. It is clear that the simpler the design, the cheaper it is. But the main criterion was reliability, and hence safety. With this end, chose a biplane scheme and power unit with a pusher propeller. With this arrangement, rotating the screw to secure the front wings with struts and braces on the sides — braces. Everything, with this arrangement, the rotor installation is nothing to limit the pilot forward visibility, and engine exhaust from the muffler is left behind. The savings was achieved using inexpensive and non-deficient, but proven materials, components and assemblies.
Frankly, most of the works on the construction of the plane, fearing that the first pancake is not always lumpy left, and to speed up the process, carried out himself, free from krukowski duties time.
Military aircraft design is a flat farm, collected mostly from duralumin tubes with a diameter of 60 mm with a wall thickness of 2 mm. To this farm is attached wings, empennage, powerplant, fuel tank, dashboard, chassis, seat and fairing of the pilot. Pipe farm are connected through plate plates including notched curved washers, bolts and self-locking nuts.
In the field connection of struts or braces the tail boom farm reinforced her wearing a bougie tube bushings with brackets.
The wings and tail. In his scheme, as already noted, the aircraft is a single-strut biplane (actually stands for two — between the upper and lower polycrylene both the right and left sides). The strut is V-shaped, the anterior branch is made of duralumin pipes of oval section, the rear of the round pipe.
1 — fairing with windshield,
2 — upper left noukria (right — mirrored),
3 — the engine,
4 — propeller,
5 — brace of Kiel (cable Ø 1,8), 6 — brace,
7 — cable wiring of the rudder,
8 — Kiel,
9 — rudder
10 — foot,
11 — power set,
12 — spring of the main wheels of the chassis (steel plate);
13 — the basic wheel chassis,
14 — left lower wing (right seraphina displayed);
15 — aircraft control stick;
16 — lever engine control,
17 — front (driven and brake) wheel,
18 — brake mechanism,
19 — front front wheel
20 receiver air pressure,
21 — strut biplane (2 PCs.)
22 — brace the upper wing (2 PCs ),
23 — front brace (cable Ø 1,8),
24 — brace stabilizer and fin (D16, tube Ø 14×1, 2 PCs ),
25 — additional strut biplane (2 PCs),
26 — light and navigation lights (2 sets),
27 — Aileron (2 PCs),
29 — steering wheel height
30 — pad (duralumin s0,5)
The wings, both upper and lower, odnalezienie, they have the same concave profile RA the relative thickness 18%. This profile developed in TSAGI in the early 1930-ies, widely used so far, as it has high load bearing characteristics. Technologically wings are divided into left and right detachable parts.
Spar has villareales-ing section, shelf is made from pine slats with a cross section of 10×10 mm and a wall made of plywood with a thickness of 1 mm.
The ribs are assembled from pine slats with a cross-section 8×4 mm., the Assembly of each wing is made by stringing the ribs on the spar.
Farm—the main power elements (material—aluminum):
1 – main beam (tube Ø 60×2),
2 — front brace (tube Ø 35×1,5),
3 — pylon attaching the upper wing (tube Ø 60×2),
4—Central strut (tube Ø 60×2),
5—seat frame (tube Ø 30×2);
6 — brace tail boom (tube Ø 35×1,5),
7— tail boom (tube Ø 55×2);
8—long bougie (tube Ø 60×2,5, 2);
9—short bougie (tube Ø 60×2,5);
10 — brace motor (tube Ø 1 16x, 2 PCs).
The connection of all wooden parts — on epoxy glue. Trim the forward part of the wing — from 1 mm plywood — she, along with the spar forms a closed loop and takes the torque. The rest of the wing is sheathed and covered with percale Amalita. By the way, they also offer percale trim were glued to the wooden elements of the power set.
The top wing as opposed to the lower has ailerons and a slightly larger span Ailerons have the same odnaleziono design as Only the wing ribs arranged in a zigzag, and the profile symmetric.