| Course Name | Helicopter Theory |
| Course Code | 23AEE431 |
| Program | B. Tech. in Aerospace Engineering |
| Credits | 3 |
| Campus | Coimbatore |
Historical development, configurations of helicopters, rotor system, flight control and mechanism, hovering theory, momentum theory for hover and vertical flight, blade element theory for hover and vertical flight, combined blade element momentum (BEM) theory.
Momentum theory for forward flight, various non-uniform inflow models, blade element theory for forward flight, non- dimensional hub forces and moments, estimation of power for forward flight.
Idealization of rotor blades, flap-lag and torsional dynamics of the blade, rotor blade flapping motion: A simple model, helicopter trim analysis.
Objectives
To make students to understand the fundamentals of helicopter (momentum and blade element) theory and apply these theories to hover and forward flight conditions.
CO1: Estimate the performance of a helicopter using momentum theory. CO2: Understand the blade element theory for hover and vertical flight. CO3: Understand the blade element momentum theory for forward flight.
CO4: Analyse the blade response and trim condition of a helicopter rotor system.
| PO/PSO | PO1 | PO2 | PO3 | PO4 | PO5 | PO6 | PO7 | PO8 | PO9 | PO10 | PO11 | PO12 | PSO1 | PSO2 | PSO3 |
| CO | |||||||||||||||
| CO1 | 3 | 3 | 3 | – | – | – | – | – | 1 | – | – | 2 | 3 | 2 | – |
| CO2 | 3 | 3 | 3 | – | – | – | – | – | 1 | – | – | 2 | 3 | 2 | – |
| CO3 | 3 | 3 | 3 | – | – | – | – | – | 1 | – | – | 2 | 3 | 2 | – |
| CO4 | 3 | 3 | 3 | 3 | 2 | – | – | – | 1 | – | – | 2 | 3 | 2 | – |
| Assessment | Internal | End Semester |
| Midterm Exam | 30 | |
| *Continuous Assessment (CA) | 30 | |
| End Semester/Projects | 40 |
W.Johnson, “Helicopter theory”, Princeton University, 1980.
R.S. Bramwell, “Helicopter dynamics”, Edward Arnold Publications, 1976
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