After three major rounds in the class of models with a parachute (S3A) max the results showed that 11 participants; winners in the second additional (first brought from the ranks of contenders just two). The winner in the class S3A was V. Korobkov (pilot Magadan control
MGA), second and third place — A. Damljanovi and V. Budnikova.
We have to admit that model rockets parachute did not differ variety of designs. Body length 220-250 mm, material — fiberglass, only the differences in the shape of feathers. The diameter of the dome of the vast majority of parachutes is in the range of 560-590 mm. But increasingly, there are dome increased in size, which, for example, demonstrated in the final round, the winner in this class Korobkov. The advantage of parachute Ø 1 m was apparent, especially in the absence of thermal flows in the evening. Note, however, that the big dome has to be cut out of the glued together strips of film, and this somewhat reduces the likelihood of reliable erections after long-term storage in folded form in the model.
Model class S3A champion of the USSR S. Korobkova (Magadan) is not very different from missiles in this category (Fig. 3). Its body is laminated on the mandrel Ø 18 mm thin glass. The lower (aft) part on a length of 40 mm falls on the cone to Ø 13.5 mm on the cut. Fiberglass fairing is connected with the housing by means of a sleeve into which is glued the frame for the mounting of the filament mount parachute. Three stabilizer — balsa, with a thickness of 0.8 mm, the lateral side reinforced with epoxy resin. On the housing are fixed on the adhesive BK-9.
Parachutes depending on the conditions of competition are used with different diameters of the domes from 600 to 1000 mm. they are Cut from the Mylar film thickness of 3 µm. To protect the dome from sintering when triggered, expelling charge MRD, use a plastic wad is a cylinder with a length of 20 mm, both sides of which is affixed a stub. The mass of the model without a parachute and the engine is about 5 g.
Fig. 3. Model class S3A V. Korobkova:
1 — fairing, 2 — frame, 3 — sleeve, 4 — parachute 5 — body, 6 — wad, 7 — power frame, 8 — stabilizer.
Markedly increased the number of missiles with wick devices forced landing, great reliability shows the schema with the placement of the wick in the head fairing (ignition of the wick before the start of the model).
With particular interest expected start models on realism of flight (S7). After all, there had to be a winner ended on the eve of the world championship 1987 A. Korchagin (Kazakh SSR). After bench evaluation best mark in the table (801 points) was his team-mate, A. Bachi the USSR (Latvian SSR). Korchagin have the second result — 789 points, the third at V. Suslova (map) — 681 point. The first two presented models-copies of the carrier rocket of the spaceship “Soyuz-T” in scale 1:52 in the three-stage version of the separation of the steps of the radio commands. V. Chapsal made copy missiles “meteor-2K”, scale is 1:3 and flying on the same stage without the side boosters.
Taking into account the new requirements when a flight is estimated at 250 points (previously, the maximum score was 850), much to decide the working of the steps, mnogovektornosti and be able to show special effects (resetting cones, boosters, Department layouts, satellites, etc.) inherent in the prototype.
Although the flight and not shake the position of leaders Bachi and A. A. Korchagina — “reserve” of points after the bench was solid — good impressions they produced neither the judges nor the audience. Both copies did not happen ignition third steps, and evaluation for flights to 130. points in A. Bachi and 105 points in A. Korchagina.
Champion was A. Bacha with a score of 931 points (801+130), ka second place A. Korchagin (789+105=894 points). The best estimate popeta (175 points) received a copy of the “Intercosmos” created by O. Poveznica (Moscow) in a two-stage variant with the opportunity to demonstrate four effects. This model is interesting because her MRD ignition of the second stage occurs when the separation of the first through-circuit circuits contact group of electromagnetic relay (power from the onboard battery).
As already mentioned, new classes of the championship was S1A, S5C, and S8E. It was played only a personal priority. It should be noted that some experience of creating such models from the Soviet athletes already have these classes included in international competitions, and the members of the USSR national team perform with this technique.
In the class of high-altitude missiles S1A gold medal in A. mityureva (Moscow). Its a single stage the model has reached 727 M. Silver V. Head (MGA) — 651 m, and “bronze” in the Good O (the state Committee for vocational training) — 609 m
For a detailed overview of the situation in the class S1A data is not enough. But some conclusions can be made. A reference model to date is champion rocket Carapina A., the winner of the worldly championship of 1985 (see “M-K” № 8, 1986). There are some design changes under serial mrad and slight variations in the length of the body in the form of the tail. All participants used a starting device, eliminating the need for guide rings. Time models achieve a maximum height of about 10 C.
Model class S1A champion of the USSR A. mityureva (Fig. 2) has a housing of two layers of fiberglass, is laminated on the mandrel Ø 17,9 mm. Aft of the 37 mm conical, and at the end its diameter is 13,3 mm under a very tight fit skirt mrad. The upper end of the motor centered in the housing frame of balsa wood with a thickness of 5 mm.
Four stabilizer carved from balsa wood with a thickness of 0.8 mm, reinforced with epoxy and fiberglass. Fairing is molded from fiberglass. Brake band for better tracking of the descent of the model has a size of 30X3000 mm. weight of the model without the ribbon and MRD 2.1 g, the time until disclosure of the tape 10.
Fig. 2. Model class S1A A. mityureva:
1 — fairing, 2 — strand garter, 3 — brake band, 4 — body, 5 — wad, 6 — frame, 7 — MRD, 8 — stabilizer.
Model class S6A bronze medalist V. Lunichkina (Tajikistan).
A distinctive feature of this missile (Fig. 4) — a double hull, which consists of power part and falconus.
Power (or motor) housing molded of three layers of glass, of a thickness of 0.025 mm on mandrel Ø 9,8 mm. In the lower part with the bushing is fixed to the engine, after which he fixed with a hairpin. Fairing machined from balsa. Falconus length 130 mm glued two layers of glass on the mandrel Ø 18 mm, length 25 mm in its upper part conical. In the lower (bottom) part is pasted a ring of balsa to center MRD. Three stabilizer visquine balsa plate, mounted on falconus.
Brake band size 100X1200 mm is cut in the shape of printing of polyester with a thickness of 20 µm. The mass of the model without the ribbon and MRD from 2.3 to 2.4 g. the Time until disclosure of the tape of about 8 C.
Preparing the model to run is in the following order: MRD is attached to the lower part of the casing and fixed with a wooden pin, then put falshcards and put the brake band.
Fig. 4. Model class S6A V. Lunichkina:
1 — the fairing 2 — thread attachment, 3 — brake band, 4 — power case, 5 — falconus, 6 — wad, 7 — bushing mounting mrad and 8 mrad, 9 — regulator 10 — centering ring.
Before considering models of class S5C, we should recall the technical requirements that permit a launch weight of 120 g, the total momentum of the engines of 5.01-10.0 N*s, with a minimum diameter of 18 mm should be on length not less than 20% of the length of the entire model. These requirements (especially the last paragraph) and dictate the selection of the prototype depending on the intended MRD. Because its diameter at a momentum of 5 N*s, about 14 mm, and at a momentum of 10 N*s, about 19 mm. it Turns out that smaller midsection may only be a model of a two-step variant with engines smaller diameter, that is MRD 5 N*s. the win-win similar decisions have confirmed the launches of high-rise copies.
After bench evaluation in the class a high-rise copies S5C the best amount (569 points) was at O. Poveznica (Moscow). How the judges evaluated a two-stage copy of French missiles “Eridan”. The second was recognized as the model-copy single-stage meteorological rocket MMR-06, manufactured by J. Gapon (SSR). But both athletes were not destined to hold leading positions. Gold medal champion of the USSR brought by A. Martin (Tajik SSR) model-copy of Soviet meteorological rockets M-100B peak height of 604 meters In the end he 430 (stand) + 604 = 1034 points. Silver award at the village of Poniatowa (Uzbek SSR), as they copy the M-100B, — 470+556 = 1026 points. Bronze medal — O. Poveznica (569+446=1015 points).
All three winners presented a model of a two-step option. The first two they are slightly different sizes. A. Martin chose the scale of 1:13,8, A. Ponyatov — 1:13,5.
In class S8E RC raketoplana were only 12 participants. I must admit that it is the most complex and difficult in the missile modeling. Of course, the effect and the absence of easy and reliable on-Board equipment (receiver and servos). Had the advantage athletes using foreign equipment. But in fairness it should be noted that the Central model airplane club gradually solves this problem, as the forces providing a “missile” reliable foreign equipment.
Special surprises on the day raketoplana did not happen. Leadership immediately took a famous athlete, world champion in 1987 in the class S8E Kovalev (Russian Federation). He became the winner of the championship with a score of 1051 points. In second place — A. Kurepin (RSFSR) — 1008 points, the third — B. Barış (SSR) — 994 points.
Models of most of the participants, including the winners, were performed according to the scheme developed by V. Kovalev in 1984. His rocket differs from all previously known (see “M-K” № 3 and 10 for 1984 and 4 in 1985). It is a cantilever monoplane with folding in the active site of popeta wing. The wing area on takeoff reduced by half, as both console mounted on the torsion bar are formed to the fuselage and fall to the bottom plane of the wing. The profile becomes symmetrical. As a result, significantly increases the height of the recruit. Upon completion of MRD there is a release latch consoles and they return to the position of the gliding flight. The wingspan of the model 1070 mm, a length of approximately 800 square bearing surfaces of 14.5
DM 2, the mass of the model 280-285, Rocket-equipped receiver with two steering servo to drive the elevators and directions.
Some athletes (V. Korchagin, E. Znamenskiy) was performed with machines rigid scheme (“rocket plane”), without folding wings, such as the one that was previously published in “M-K”. But flying is far from perfect, not always aged to the desired trajectory, resulting in flight is not counted.
Team victory as the previous three years, was again won by athletes of the national team of the RSFSR, the second was the team of Moscow, the third place at the masters championship, the team of Tajikistan.
Today we acquaint readers with models of Champions of the USSR, 1987.
V. ROZHKOV, the judge-Union category, our specials. Q.