DEBUT CLASS F1G | MODEL CONSTRUCTION

In today’s post — the story of rezinomotornaya models of a new class F1G, technical requirements which can be reduced to two basic: the minimum weight of the aircraft without rubber motor 70 g and the maximum weight of the lubricated rubber motor 10 G. Models that meet these requirements, successfully designs and builds in aeromodelling circle of Club of young motorists profkoma OAO GAZ seventh-grader Kirill SHAGIN, who in July 1997 was the first champion of Russia in this class of models.

It should be noted that the model, which will be discussed, are quite suitable for competitions of any rank up to the Championships of Russia. It is, however, somewhat difficult to manufacture, therefore we recommend it for folks working in circles is not the first year.

Now about the design of the model. The pylon is shaped in the matrix of two layers of Kevlar with a thickness of 0.15 mm. Weight of the finished part is only 5 g. There is a release button of the timer, which at the time was described in the journal “modelist-Konstruktor” (No. 12 of 1991).

The motor tube is also molded using the resin heat curing of Kevlar with a thickness of 0.15 mm and of glass, of a thickness of 0.05 mm. the Weight of finished parts 9 — 10 Tail boom is laminated from two layers of carbon fabric with a thickness of 0.1 mm, and its weight is 4 g. the Fuselage is detachable, the adapters are machined from D16T.

Wing resonators made using balsa. Spars pine, reinforced with a carbon cloth with a thickness of 0.08 mm. It also reinforced and the rear of the ribs, from the spar to the trailing edge and the trailing edge. Wing skin — metallic-Mylar film with thickness of 0.012 mm.

On the wing provides a baffle with a thickness of 0,6 mm.

Rezinomotornaya class F1G model airplane champion of Russia 1997 Kirill SHAGIN.

Contour of a propeller blade Ø400 increments to R130 480

The contour of the propeller blade Ø400 with a step 480 for R130.

The installation angle of the stabilizer on the rise (in motor mode) is about 2°, in the plan — 0°.

Engine boss — design Golovanova. Screw diameter — 400 mm, at a radius of 130 mm is equal to 480 mm. the rubber motor consists of 10 strands of American rubber FAN “Caplans”. The maximum number of revolutions of the twist of about 500.

Model takes off almost vertically with a smooth transition into a gentle climb at the end of the engine phase of flight. The operation time of the rubber motor when you spin 500 rpm is 35-37 C.

I. KORKIN,

the head of the aircraft modeling lab pretty cure GAS

Nizhny Novgorod

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