Modellhelikopter

Modellhelikopter, also known as model helicopters, are miniature, remotely controlled aircraft that mimic the flight characteristics of full-size helicopters. They are a popular hobby and can range from simple, pre-assembled toy-grade models to complex, highly detailed, and high-performance machines that require significant skill to operate.

The basic principle of operation for most model helicopters involves a main rotor system that generates lift and a tail rotor that counteracts the torque of the main rotor, providing directional control. More advanced models may use alternative tail rotor systems, such as coaxial rotors or the Fenestron shrouded tail rotor. Power sources vary, with electric motors being the most common for smaller models due to their ease of use and cleaner operation. Larger and more powerful models often utilize internal combustion engines, typically glow engines.

Controlling a model helicopter is done via a multi-channel radio transmitter. These transmitters send commands to servos within the helicopter, which adjust the pitch and angle of the rotor blades and control the tail rotor. Building and maintaining model helicopters can be a significant part of the hobby, involving assembly, repair, and tuning of mechanical and electronic components.

Model helicopter enthusiasts often gather at flying fields or indoor venues to fly their models. There are various disciplines within the hobby, including 3D aerobatics, scale flying, and general recreational flying. Competitions exist for both skill and the realism of scale models. Safety is a paramount concern for model helicopter pilots, and guidelines are typically followed to ensure the safety of both the operator and bystanders.