COURSE SUMMARY
Course Title: 
Helicopter Theory
Course Code: 
19AEE433
Year Taught: 
2019
Type: 
Elective
Degree: 
Undergraduate (UG)
School: 
School of Engineering
Campus: 
Coimbatore

Helicopter Theory is an elective course offered in the B. Tech. in Aerospace Engineering program at the School of Engineering, Amrita Vishwa Vidyapeetham.

Course 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.

Course Outcomes

  • 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.

CO – PO Mapping

PO/PSO/
CO
PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 PSO1 PSO2 PSO3
CO1 3 3 3           1     3 3 2  
CO2 3 3 3           1     3 3 2  
CO3 3 3 3           1     3 3 2  
CO4 3 3 3 3 2       1     3 3 2  

Unit 1

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.

Unit 2

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.

Unit 3

Idealization of rotor blades, flap-lag and torsional dynamics of the blade, rotor blade flapping motion: A simple model, helicopter trim analysis.

Textbook(s)

  • C. Venkatesan, “Fundamentals of helicopter dynamics,” CRC Press, 2015

Reference(s)

  • W. Johnson, “Helicopter theory”, Princeton University, 1980.
  • R. S. Bramwell, “Helicopter dynamics”, Edward Arnold Publications, 1976

Evaluation Pattern

Assessment Internal External
Periodical 1 (P1) 15 -
Periodical 2 (P2) 15 -
*Continuous Assessment (CA) 20 -
End Semester - 50
*CA – Can be Quizzes, Assignment, Projects, and Reports.