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30 size : Engine 0.3 cubic inch, Main Blades 550-600mm; 50 size : Engine 0.5 cubic inch, Main Blades 600-620mm; 60 size : Engine 0.6 cubic inch; 90 size : Engine 0.9 cubic inch, Main Blades 690-710mm; Modern RC helicopters are generally classed by the length of the main blades (with few exceptions). Common classes are: Micro (under 200mm main ...
On a helicopter, the main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerodynamic drag in forward flight.
In aeronautics, a swashplate is a mechanical device that translates input via the helicopter flight controls into motion of the main rotor blades. Because the main rotor blades are spinning, the swashplate is used to transmit three of the pilot's commands from the non-rotating fuselage to the rotating rotor hub and mainblades.
A rotor blade produces more lift in the advancing half. As a blade moves toward the direction of flight, the forward motion of the aircraft increases the speed of the air flowing around the blade until it reaches a maximum when the blade is perpendicular to the relative wind. At the same time, a rotor blade in the retreating half produces less ...
The main rear landing gear retracts into the sponsons. [2] The Bell 222's rotor systems include: Two-blade, semi-rigid high-kinetic energy main rotor with preconing and underslinging. The rotor head incorporates elastomeric bearings for hub springs, and flapping and pitch change bearings. The system is similar in design to that used by the AH-1 ...
The Cabri G2 is a two-seat light helicopter with a three-bladed fully articulated main rotor and a Fenestron-type tail rotor with the main rotor blades advancing in a clockwise direction. [22] The main rotor is designed to enable flight within a wide envelope of weather conditions, while the composite rotor blades are damage-tolerant and have ...