How does a helicopter flybar work?
The flybar has a weight or paddle (or both for added stability on smaller helicopters) at each end to maintain a constant plane of rotation. Through mechanical linkages, the stable rotation of the bar mixes with the swashplate movement to damp internal (steering) as well as external (wind) forces on the rotor.
What keeps a helicopter balanced?
The Tail Rotor Purpose Because it ‘pushes’ the helicopter in the opposite direction as the main torque, balancing any main rotor-generated torsional force. This prevents the helicopter from turning in circles during flight and keeps it steady.
Why do RC helicopters shake?
anything loose will cause a wobble. if the tail boom is not secured it will wobble as well. From the relatively low frequency of the shake it looks like a bent main shaft or feathering shaft, or the blades badly out of balance or far too tight in the grips.
What is the purpose of the flybar?
On a flybarless heli, when you input cyclic, you get instant response. The flybar dampens this by resisting the cyclic input. You can control the amount of dampening by varying the paddles size/weight, position from main shaft and mixing levers(where tuneable). The function of my flybar is to bend!
What is a Flybar used for?
The Flybar is a modification of the traditional pogo stick design which allows riders to propel themselves up to a world record 8 feet 6 inches into the air according to the Flybar’s website.
What are the 4 types of helicopter vibration?
1 – Reduce collective pitch. 2 – Increase rotor RPM. 3 – Reduce forward airspeed. 4 – Minimize maneuvering.
How does helicopter collective work?
The collective pitch control is usually found at the pilot’s left hand; it is a lever that moves up and down to change the pitch angle of the main rotor blades. Raising or lowering the pitch control increases or decreases the pitch angle on all blades by the same amount.
What normally causes a low frequency helicopter vibration?
Low-frequency vibrations are often caused by disturbances in rotor revolution, while medium-frequency vibrations can typically be attributed to loose components that affect the rotor system.
What is a flybar on a RC helicopter?
This cyclic control changes the pitch angle of the whole rotor disc, which is the imaginary circle drawn in the air by the tips of the spinning blades. Traditionally, FP and CP rc helicopters use a flybar* to influence the angle of the rotor disc.
What kind of control does a RC helicopter have?
RC helicopter control units Many smaller rc helicopters use micro-processor controlled printed circuit boards (PCBs) to save space and weight. The PCB based unit is a device that can potentially (depending on the helicopter type) combine the receiver, gyro and motor electronic speed control (ESC) on electric powered helicopters.
How does yaw control work in RC helicopters?
If the thrust exceeds the torque, the fuselage will yaw one way and if the torque exceeds the thrust then the fuselage will naturally yaw the other way. The use of yaw control in rc helicopters is made easier by a gyro which is an electronic device that is connected between the receiver and the tail rotor control (either a servo or small motor).
What is cyclic pitch control in helicopters?
Cyclic pitch control – the angle of the rotor disc is changed to ‘unbalance’ the lift within the disc. As a result, the helicopter leans to the side that is experiencing less lift. Downwash – air that is forced downwards by the spinning main rotor blades.