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NPTEL Courses

Introduction to Helicopter Aerodynamics and Dynamics

This course introduces topics in helicopter aerodynamics and dynamics: Historical development, Rotor configuration, Elements of hovering, Vertical flight, Forward flight, Performance, Rotor blade idealization, Flap response, Trim and coupled flap lag torsion dynamics, and Introduction to certain stability problems. (from nptel.ac.in )

Instructor

Prof. Dr. C. Venkatesan, Department of Aerospace Engineering, IIT Kanpur.

Aeronautics and astronautics

2012

Lecture 01 - Introduction and Historical Development of Helicopters

Lecture 02 - Flight Control System, Rotor System

Lecture 03 - Actual Helicopter Model and the Various Functions of the Controls

Lecture 04 - Helicopter Configuration, Hovering Theory: Momentum Theory

Lecture 05 - Hovering Theory: Blade Element Theory

Lecture 06 - Combined Blade Element and Momentum Theories for Non-uniform Inflow Calculation

Lecture 07 - Ideal Rotor vs Optimum Rotor, Vertical Flight

Lecture 08 - Vertical Flight: Autorotation in Vertical Descent

Lecture 09 - Autorotation in Vertical Descent (cont.), Ground Effect, Forward Flight

Lecture 10 - Forward Flight: Momentum Theory

Lecture 11 - Forward Flight: Blade Motion

Lecture 12 - Forward Flight: Blade Motion (cont.)

Lecture 13 - Forward Flight: Hub Loads

Lecture 14 - Forward Flight: Power Variation with Forward Speed

Lecture 15 - Forward Flight: Blade Flapping Motion - Simple Model

Lecture 16 - Forward Flight: Blade Flapping Motion (cont.)

Lecture 17 - Forward Flight: Blade Flapping Motion (cont.)

Lecture 18 - Helicopter Trim and Stability

Lecture 19 - Equilibrium Condition of Helicopter

Lecture 20 - Introduction to Blade Dynamics

Lecture 21 - Blade Dynamics (Flap Equation), Lead Lag Dynamics

Lecture 22 - Lead Lag Dynamics (cont.), Isolated Torsional Dynamics

Lecture 23 - Isolated Torsional Dynamics (cont.), Coupled Flap-Lag Torsion Problem

Lecture 24 - Coupled Rotor-Fuselage Dynamics, Rotor Modes, etc.

Lecture 25 - Linear Time Varying System

Lecture 26 - Momentum Theory in Forward Flight