The top part of a helicopter would most commonly be considered the rotor blades (which spin to provide lift).
the rotor
It is called a rotor, and it more closely resembles a wing than a propeller blade
The spinning thing on top of a helicopter is called a 'rotor'. They are also on the end of boats to propel them through water.
Rotor blades are on top of a helicopter.
The top part of a tornado is called "the top"
The first helicopter was called the VS-300.
The rotor is the hub and main blades on top of every helicopter.
The top part of a shoe is called the upper
My Sims Agents Questions-Where is the helicopter? the helicopter is at you head quarters and is on the very top floor
The top part of a fraction is the numerator; the bottom part is the denominator.
the blade is called rotor bladesThe rotor blades on top are called Main Rotor Blades, because they are the main source of lift for the helicopter. The smaller rotor blades on the tail are called Tail Rotor Blades.
Denominator. The top part is called the numerator.