Introduction to Helicopter Aerodynamics and Dynamics

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3 STUDENTS

Contents:
Introduction – Historical Development of Helicopters – Helicopter Configuration – Control Requirements – Types of Rotor Systems – Basic Power Requirements.

Introduction to Hovering Theory : Momentum Theory – Blade Element Theory – Combined Blade Element and Momentum theories for non – uniform inflow calculation – Ideal Rotor Vs Optimum Rotor.
Vertical Flight : Various flow states of Rotor – Autorotation in Vertical Descent – Ground Flight.

Forward Flight : Momentum Theory – Variable Infow Models – Blade Element Theory – Rotor Reference Planes – Hub Loads – Power variation with forward speed – Rotor Blade flapping Motion: Simple Model.
Helicopter Trim and Stability : Equilibrium condition of helicopter – Trim analysis – Basics of helicopter stability.

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