Model missiles Ѕ3А Cup winner S. P. Korolev 2008 Igor Danilov made by well-known scheme called “Chelyabinsk”. Its main feature, distinguishing feature is elongated up to 165 mm tail section. This helped a little to alleviate (about 0.5 g) stern, to shift the center of gravity of the model up.
The housing is formed of two layers of fiberglass with a thickness of 0.02 mm on a mandrel of variable cross section: the minimum diameter of 10.2 mm, a maximum of 39.9 mm. Billet fiberglass spread out on a flat surface and impregnated with epoxy, adding the color pigments. For better “wetting”, it is heated with a hair dryer. Mandrel, pre-treated (oiled) paraffin separation with mastic, is clamped in the Chuck of the lathe and the blank is wound from fiberglass. After a short drying the billet housing for the best (tight) fit of the layers of fabric wound tape the tape. The diameters of the housing is adjusted to the measurements indicated in the drawing.
The rear cylinder with a length of 41 mm to increase the rigidity wrapped with Kevlar thread.