30-09-2014, 11:32 AM
Abstracts: A helicopter can be defined as any flying machine using rotating wings to provide lift, propulsion and control forces that enable the aircraft to hover relative to the ground. Designing a conceptual helicopter requires the basic knowledge of aerodynamics forces acting on it. Conceptual design includes the designing and calculation of major parts like main rotor disk, tail rotor and fuselage. The conceptual design is a primary requirement based on which further designs can be conducted. Basic historical data and empirical formulae are the main pillars of design. For conceptual design of helicopter, a suitable reference helicopter has been selected based on which assumptions were made. Various calculations based on empirical formulae and historical graphs have been conducted and compared with the reference helicopter. This had led us to the rotor designing. Point calculations and various performance parameters like power, thrust etc for different values of their dependent variable over wide range have been plotted.