Define disk solidity.
[3 marks]Differentiate between feathering and flapping.
[4 marks]Draw and explain function of primary components of conventional helicopter.
[7 marks]Define disk loading.
[3 marks]Differentiate between cyclic and collective pitch.
[4 marks]Discuss various types of main rotor configurations of helicopters.
[7 marks]With diagram explain how blade tip velocity varies with forward flight.
Define power loading.
[3 marks]Discuss geometry of a main rotor.
[4 marks]Discuss various amount of power required at different phases of flight.
[7 marks]What do you understand by rotor solidity?
[3 marks]Discuss various airfoil sections used for main rotors.
[4 marks]What are difference between power required while hovering and cruising?
[7 marks]Why does twist provided on main rotor?
[3 marks]How will you decide number of main rotor blades required?
[4 marks]Discuss various types of main rotor blade plan form shape. OR1
[7 marks]How will you determine tail rotor power requirement?
[3 marks]Only draw airflow pattern while hovering in ground effect and hovering without ground effect.
[4 marks]Give the reason why helicopter shows bank while cruising?
[7 marks]How will you modify wing tip if found it touches transonic speed?
[3 marks]Explain airflow across main rotor blade during cruise.
[4 marks]Discuss thrust and power coefficient.
[7 marks]Define blade profile power.
[3 marks]Discuss effects of disk loading on helicopter maneuverability.
[4 marks]Discuss climb power and induce power.
[7 marks]