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1 POLITECNICO DI MILANO FLIGHT DYNAMICS Prof. Marco Lovera Accademic Year 2018/19 10 January 2019 SURNAME AND NAME ............................................................. ................................................... MATRICOLA ................................................... .................................... SIGNATURE ................................................... .....................................  Please return just this booklet, without additional pages.  This is a closed books exam.  Clarity and completeness of responses are a prerequisite for a positive result of the exam. 2 1. State and comment the “flat Earth” assumptions commonly adopted for the derivation of aircraft equations of motion. 3 2. Describe and discuss the choice of state variables and coordinat e f r am e s in t h e d e r i vat i on of t he equations of motion for a rigid aircraft. 4 3. Describe the structure of the transfer function from elevator deflection to pitch rate with and without the short period approximation. Under short period approximation, comment on the shape and duration of the step response transient and its relation with zero/poles location. 5 4. Describe the implementation and the role of washout filters in the design of a yaw damping SAS and draw the corresponding block diagram.