AE2025 HELICOPTER THEORY Syllabus

AE2025                               HELICOPTER THEORY                                         L T   P  C

OBJECTIVE:
To present the basic ideas of evolution, performance and associated stability problems of helicopter.

UNIT I      DEVELOPMENT OF ROTATING WING AIRCRAFT                                          6
Evolution     of     helicopter-Helicopter     configurations-rotor     arrangements-compound
Helicopter - jet rotor-no tail rotor concepts

UNIT II      DYNAMICS OF HOVERING FLIGHT                                                               12
Actuator disc theory-Blade Element Theory-ideal twist Induced & profile power-Figure of merit-Thrust and   power coefficients-calculation of drag, torque, power-Ground effect in hover- Estimation of hover ceiling.

UNIT III      DYNAMICS OF FORWARD FLIGHT                                                             10
Forward flight performance-Parasite drag and Power-Stall limitations-flapping-cyclic pitch-Autorotation in hover and in forward flight-Dead man’s curve.

UNIT IV      CLIMB AND DESCENT PERFORMANCE                                                      9
Vertical flight-flow patterns surrounding the rotor-Power required in climb and descent- Descent speed calculations-Take-off techniques.

UNIT V      HELICOPTER STABILITY AND CONTROL                                                    8
Trim-Static stability-dynamic stability-Pilot’s control-Rotor control-Flight control systems and stability argumentation-Flying qualities.
TOTAL: 45 PERIODS TEXT BOOK:
1. Gessow A & Myers G.C “Aerodynamics of Helicopter” Mac Millan & Co, 1987
REFERENCES:
1.  Gupta. L “Helicopter Engineering”, Himalayan Books, 1996
2.  Saunders “Dynamics of Helicopter flight”, John Wiley, 1975
3.  Newman. S “Foundation of Helicopter Flight” Halsted Press, 1994
4.  Seddon. J “Basic Helicopter Aerodynamics” AIAA education series, 1990.