Radio-controlled helicopter
Radio-controlled helicopters (also RC helicopters) are model aircraft which are distinct from RC airplanes because of the differences in construction,aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some (such as those with collective pitch, meaning blades which rotate on their longitudinal axis to vary or reverse lift) are more maneuverable than others. The more maneuverable designs are often harder to fly, but benefit from greater aerobatic capabilities.
Flight controls allow pilots to control the collective and throttle (usually linked together), the cyclic controls (pitch and roll), and the tail rotor (yaw). Controlling these in unison enables the helicopter to perform most[citation needed] of the same maneuvres as full-sized helicopters, such as hovering and backwards flight, and many that full-sized helicopters cannot.
The various helicopter controls are effected by means of small servo motors, commonly known as servos. A piezoelectric gyroscope is typically used on the tail rotor (yaw) control to counter wind- and torque-reaction-induced tail movement. This "gyro" does not itself apply a mechanical force, but electronically adjusts the control signal to the tail rotor servo.
The engines typically used to be methanol-powered two-stroke motors, but electric brushless motors combined with a high-performance lithium polymer battery are now more common and provide improved efficiency, performance and lifespan compared to brushed motors, while decreasing prices bring them within reach of hobbyists. Gasoline and jet turbine engines are also used.
Flight controls allow pilots to control the collective and throttle (usually linked together), the cyclic controls (pitch and roll), and the tail rotor (yaw). Controlling these in unison enables the helicopter to perform most[citation needed] of the same maneuvres as full-sized helicopters, such as hovering and backwards flight, and many that full-sized helicopters cannot.
The various helicopter controls are effected by means of small servo motors, commonly known as servos. A piezoelectric gyroscope is typically used on the tail rotor (yaw) control to counter wind- and torque-reaction-induced tail movement. This "gyro" does not itself apply a mechanical force, but electronically adjusts the control signal to the tail rotor servo.
The engines typically used to be methanol-powered two-stroke motors, but electric brushless motors combined with a high-performance lithium polymer battery are now more common and provide improved efficiency, performance and lifespan compared to brushed motors, while decreasing prices bring them within reach of hobbyists. Gasoline and jet turbine engines are also used.
New Syma S107 Metal Frame 3 Channel Infrared Radio Remote Control Helicopter w/Gyroscope RC RTF
SYMA S107 Radio Control R/C Micro Metal Frame Gyroscope (GYRO) Helicopter – RTF – READY TO FLY – RC – Remote Control Item # S107 (Red & Yellow) Feature: * Miniature size & light weight. Super wide infrared control miniature design for indoor flying 19cm long and weighing an incredible 34 grams * Controlled by 32-level high precision speed. Auto stable, rotor blade system for steady lifting-up * 3-Channel Helicopter movement forward / backward / up / down / left / right * High tenacity propeller * POWERED BY 2 SOLID MOTORS WITH A 3RD MOTOR IN THE TAIL ROTOR * High capability, dynamical Li-Poly battery. Can be recharged through the transmitter provided * Charging and power indicator * Controlled by digital technology. Infra red control system * Tri-band Technology. Nonintervention used 3 bands * High efficiency, driving motor and surge power Specification: * Weight: 34g * Size: 220x38x98(mm) * Dimensions: main rotor diameter 190mm * Helicopter battery: 3.7v Rechargeable lithium polymer battery * Charging Time: 30-35 minutes * Flight Duration: 6-8 minutes * Frequency: Infrared control system – bands A, B & C * Control Specification: forward / backward / up / down / left / right * Range: Up to 10m (30ft) Included: * 100% Brand New * 1 x 3-Channel Radio Remote Control Helicopter * 1 x Remote Control (not include 1.5v AA battery) * 1 x Tail Blade * 1 x USB Cable
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New Syma S107 Metal Frame 3 Channel Infrared Radio Remote Control Helicopter w/Gyroscope RC RTF (Blue)
This Brand New 3 Channel Gyro mini Metal rc helicopter is 1 of the world’s newest, smallest and lightest RC Helicopter you can get! At approx. 7.5″ long, it easily fits in the palm of your hand and is fully functional, equipped with latest Gyroscope technology, which makes this helicopter an instant hot seller in the RC World. This mini Gyro Metal helicopter charges directly either from the USB cable or from the controller which uses “AA” batteries and has a full-function trim control for the perfect flight. Get one today before they all fly away!
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Syma S032 Gyro Metal Frame 3.5 ChOutdoor Ready to Fly Rc Remote Control Helicopte
brand new s032 3.5 channel rc helicopter with gyro ready to fly kit is now available to you for best price you want.
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