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Modeling and Stability Analysis of a Monocopter at Fast Forward Flight

Mahmudinia, Alireza | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55296 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Saghafi, Fariborz
  7. Abstract:
  8. Mono-copter has been considered as a type of drone in recent years. The initial idea for this micro vehicle was to follow the maple seed's motion as it fell from the tree. In this study, using dynamic modeling principles and with the help of aerodynamic relationships of non-permanent blade element as well as momentum theory, we present a dynamic model of forces and moments on this monocopter. Subsequently, using the Newton-Euler approach, the six-degree-of-freedom equations of motion of this are also developed and various simulations are performed on the model using software provided by Simulink Toolkit, which demonstrates the accuracy of the simulation. In addition, we obtain the different trim conditions of this microvehicle, which, given that the system has two inputs, yields a large number of trim conditions using the Trim Condition search algorithm. Thereafter, an analysis of the stability , the feasibility of flying in various trim conditions such as hovering trim and fast forward flight are presented. After analyzing its stability under hovering trim conditions, we proceed to fast forward flight stability and with the help of input commands including engine speed and flap angle in fast forward trim conditions we show that at a certain degree of deviation of the rotor disc plane, It reaches its maximum speed
  9. Keywords:
  10. Monocopter ; Modeling ; Flight Dynamics ; Stability Analysis ; Simulation ; Fast Forward Flight ; Six Degree of Freedom (6DOF)Motion Equation

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