RESONATORY CLIMBS

 

The wing is single-spar, has a smooth middle part without cross angle “V”, raised only by his “ears”. It is made permanent, as the size is not very large. And the lack of junction nodes allows to save considerable for the model class B1 weight.

 

Start with the spar gathered in its simplest area is the slipway both the shelf and the wall in one piece. It is better to make the part from a length of 1000 mm and continue with the spar just the right size. “Ears” you cut from the center section after Assembly of the frame. Thus it is possible to achieve full similarity profile and the size of the chord across the wing span.

 

Once the glue is dry, remove the bulkhead from the slipway. Spread out on a flat Board made a life-size drawing, start to assemble the front of the wing. Securing pins the spar and planed the front edge inspect consists of tightly pre-sliced strips, forming the front part of the “ribs”. If everything is in order, glue them with epoxy in place and wait a day — the time required for complete curing.

 

 

Fig. 1. Model with rubber motor class B1:

 

1 — spinner, 2 — pole, 3 — back pin, 4 — body, 5 — keel 6 — wick, 7 the rudder, 8 — regulator, 9 — wing.

 

 

 

It is now up to the rear part of the profile. She is going to the same Board, just under the spar to put a flat wooden plate with a thickness of b mm, which is attached with pins and the rear edge. You can use two rails 5×10 mm placed under the frame members. Checking the mutual position of the parts of the wing, glue the tail part of the “ribs”.

 

Install ending (fake, of a thickness of 3 mm) and stringers. Wkleic an additional wall longitudinal length of 200 mm in the middle of the center section, do some processing of the frame. Then carefully cut with a jig saw console-ears, adjust the joints of the longitudinal elements of the set to the tip is above the center section 100 mm. Drank out of plywood with a thickness of 1 mm the gain of the spar and kleiv them in places of fracture of the wing, finally assemble the frame. Scarves and lining of the Central part of the wing is made of plywood with a thickness of 1 mm.

 

The wing is covered with long-fibre paper — macalintal. From the top you need to cover it with four layers of dilute Amalita. After drying of the varnish, hold the frame under load, or formed under the influence of uneven drying of Amalita random curvature will be very hard to eliminate. But the required twist of the wing is necessary to provide necessarily, warming of the skin over the stove. You must ensure that the front edge of both endings was 2.5 mm below the rear edge (relative to the untwisted wing).

 

Empennage is made mainly of packing foam. Using a heated electric current of the wire cut it into plates with a thickness of 2.5 mm for stabilizer and 3.5 mm for the keel. Cutting along the contour of the workpiece horizontal tail and giving it a concave profile, glue the pine spars, edges, a Central rib and ending. The last two items can be done by sawing along a curved lime plate having a section 20×2,5 mm.

 

 

Fig. 3. The nose of the fuselage with a pylon and a front boss.

 

The keel is exactly the same, only the rails to the border — 2X3,5 mm. They also need to paste and crack under the rudder, which is cut out from balsa. When assembling the tail it is better to use casein glue. Epoxy is too heavy, and when you-scrivanie resin seam, joint with the softest foam, greatly interfere with this work.