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it depends. sometimes they make the helicopter turn. On models when they are facing up like the main rotor, they propell it forward so the gyro can fall to one side and lean the chopper forward.
The major purpose of the back rotor is to counteract the torque of the main rotor. On helicopters with a single top rotor, if there were no back rotor, the torque would cause the helicopter to spin around as soon as it lifted off the ground.
What else can I help you with?
Another name for helicopter propelers?
Main rotor and tail rotor. The main rotor is on top of the helicopter consisting of two or more blades, and the tail rotor is at the back of the helicopter, which also consists of two or more blades.
What is the second rotor on a helicopter for?
The small rotor on the tail is to counter-act the torque of the big rotor on top. So it is used for steering and to keep the helicopter stable.
What is the rear propeller on back of helicopter used for?
to counteract the torque of the main rotor. when the main rotor rotates it creates drag which tries to rotate the aircraft, the tail rotor balances this. it also turns the aircraft left and right by changing the pitch. if a helicopter loses the tail rotor it will spin uncontrollably
Why don't helicopters spin in circles?
The back rotor of the helicopter counters the force applied to the body of the helicopter by the main rotor by applying thrust in the same direction as the main rotor. The force from the main rotor is applied in the opposite direction the main rotor is spinning. So say the force the main rotor was exerting on the body of the helicopter was causing the tail to move left then the back rotor would be designed to apply an equal force pushing the tail right to keep it from spinning. If the back rotor of a helicopter malfunctioned it would begin to spin.
What are the two small propellers on a helicopter?
Oh, dude, those little spinny things on a helicopter are called the tail rotor and the main rotor. The tail rotor helps the helicopter not spin out of control, and the main rotor is like the big boss that actually lifts the whole thing up. So yeah, those propellers are pretty important for not crashing and stuff.
Why don't helicopters spin around in the air?
Some helicopters feature a second rotor underneath the first rotor that counters the force applied to the body of the helicopter by applying thrust in the opposite direction of the main rotor. This stops the helicopter from spinning around. Others, instead of a second rotor underneath the first rotor have a back rotor that essentially does the same thing, which is provide a equal force to the first rotor preventing the helicopter from spinning =0
Why does a typical small helicopter with a single rotor have a second small rotor on its tail?
The small rotor on the tail, called the tail rotor, counteracts the torque produced by the main rotor of the helicopter. Without the tail rotor, the helicopter would spin uncontrollably in the opposite direction of the main rotor. The tail rotor helps maintain the helicopter's balance and heading.
Why was the helicopter invented by Igor Sikorsky?
Igor Sikorsky was one of many helicopter inventors. He was the one who invented a helicopter that used a tail rotor to counteract the thrust of the main rotor, and he was able to build one with a strong enough engine, an efficient enough rotor, and a light enough airframe. So his helicopter became the first successful commercially produced helicopter.
Where was the helicopter rotor made?
The helicopter was made in China.
What is on top of a helicopter?
Rotor blades are on top of a helicopter.
What does the tail rotor of a helicopter do?
it stabilises and steers the helicopter.
What is a helicopter with 2 propelers?
That is a twin rotor helicopter
