Rotary-Wing Flight Mechanics
نویسنده
چکیده
A helicopter is not possessed of an ability to fly fast compared with fixed-wing counterparts. This is a result of considerations with the main rotor. The main rotor moves in a direction very close to its plane of rotation which naturally divides it into two halves which operate under different aerodynamic conditions. One side (called the advancing side) has the rotation and translation velocity contributions adding together whilst the other (called the retreating side) has them subtracting – see Figure 1. This becomes more influential as the forward speed increases and the rotor has two principal problem areas
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