Before you send the model rocket glider and a Delta wing in the first flight, it must be regulated. The first thing to do is to ensure that the model’s center of gravity coincided with the axis of the hinge rod of the balancer. For this we need to download either the fairing or tail wad. Now, a few times run the model with it, and in the first flights send her smoothly. If your glider is stable plans, fold the model and put it up. Adjusted correctly, the glider should turn in necessary for flight the position of the rail-saw down. Debugging is almost finished, the rest of the operation on the adjustment carried out during training runs with the engine.
Some tips on adjusting.
Typical trouble during the separation of the glider container is the delay of the first dive. Most often this happens because of the increased speed of the mini-glider from the container. To reduce it, add a few wads. If the glider continues to fall into a dive, the reason for the wrong alignment is shifted forward of the center of gravity. To move it, push back the hinged rack and the rocker, extending a thread-lock. The same effect can be achieved by downloading the tail wad. Another reason for the delay in dive — small directional stability. Increase it with increasing angle of the “V”, bending up the ends of the spring hinge or increase sail, to do this, however, will have to replace it with a new one, with a large angle at the vertex.
Another defect of the flight — pitch — planning at excessively high angles of attack, when the glider loses speed and goes into the parachuting mode. To eliminate this phenomenon, you can shorten the threads of the retainer, and hence the movement of the rod of the balancer forward, or relief tail wad.
Fig. 4. The main stages of flight of the rocket plane class Ѕ4В with deltakilo:
A — start, In — flight, In — the separation of the glider container, G — flight planning, D — pitch up the glider after deployment wick machine forced landing.
Pay attention to the preparation of the rocket for launch. Modelers typically use two methods of his gear. Some put mini-hang glider in the container, and then the pre-staging area is fixed in this engine. Most fix engine first, then ka it is placed wads of cotton wool with the obligatory suction them with talc. After that, the container is inserted and the glider, which side bars are pressed against the Central, and the rake for the balancer on a hinge is deflected forward. Sail gently crushes and twists around the folded frame and the glider is embedded in the media.
Model rocket A. Marinov has a simple automatic forced landing, enabling the transition of the glider mode kupirovaniya. The concept of this device. On the head fairing along the annular grooves placed a thread with a wick that holds the string-retainer. Is the wick to burn through a thread in the annular channel, as the rail-saw backwards and the model begins to cabriolet.
V. ROZHKOV, master of sports of the USSR