A new concept on design of helicopter and rotor

The purpose of this study is to eliminate one of the important problems of the helicopters. This problem is the created reverse torque on helicopters because of the rotation of the main rotor. The complicated and the detailed mechanism may be simplified and an alternative solution for the created reverse torque may be implemented. So, this thesis will concentrate on the innovative thoughts.The calculation and the measurements of the created reverse torque are the primary tasks of this thesis. The static tapping system and the spring system are used to measure the reverse torque. The blade element theory is used to calculate the reverse torque. The validated torque from the calculation and measurements has been used to design a new anti-torque system.The new anti-torque system has removed the tail part of an existing model helicopter. The tail rotor has been changed with a ducted fan. So a smaller, lighter and safer helicopter has been designed and constructed from the tail part point of view.Key Words: Helicopter, Anti-Torque, Ducted Fan, Blade Element Theory