The tail boom holds:
- helicopter’s light indication;
- four hatches (to access the main units of the tail boom);
- strut fork (the strut keeps the tail boom horizontal);
- fork attaching the tail boom to the V-belt drive;
- nine frames (for main units of the rotor control, and also as a wireframe for the pipe);
- fork for support and attachment of stabilizer.
The helicopter’s stabilizer provides the necessary characteristics of directional stability and controllability in the main flight regimes for saving the necessary resources of directional control. The vertical empennage provides for yaw stability and relieves the rotor at high speeds.
The helicopter’s undercarriage (Fig.4.5.) are skid-equipped.
The skids are made of jointless pipes.
For softening the impact during incorrect landing, the helicopter is equipped with springs made of bent pipes. The skids are equipped with holders for the detachable rolling device for land transportation of the helicopter within airports or hangars.
To make getting into the cockpit more comfortable, the footboards are attached to the fore springs.
ROTOR
The rotor (Fig. 4.6.) moves the helicopter.
There are three blades of rectangular shape made of composite materials with nonlinear twist and variable in width symmetric profile.
The blades are torsion-attached. Steel detail package VNS-2 serves as a torsion bar.