They do not always "crash" in this manner. although when they do, it is mainly due the instabilization of the tail prop.
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if the tail prop is not spining the rotation of the main rotor will force the helicopter to spin in the opposite direction, by air drag, the tail counterbalances this force.
They spin around in circles!
Its called a sycamore seed :)
when the main blade rotates it creates torque and if that torque is not countered by the rear rotor the helicopter will spin out and crash. the helicopters that do not have a rear rotor have another rotor that is the same size moving in the opposite direction
The two rotors spin in opposite directions.
no
It isn't just RC Micro Helicopters, all have the occasional crash. They crash because the pilot has done something wrong, or something in the helicopter has failed or had a glitch. A gust of wind can also send a helicopter out of control.
Crash Bandicoot Warped is crash 3, Crash Bash is just a spin off game
Helicopters are generally more dangerous than aeroplanes.
That is to stabilise the inherent spin of the main rotor and to steer the machine.
Remote control helicopters usually can be returned to the store of purchase. Some sellers offer 30-day return policies. However, most shops and manufacturers will not warranty the helicopters because they are easy to crash in unskilled hands.
fly after him and spin him three times
Because the main rotor is on top and the tail propeller stabilises the spin.