Description
Consider a fixed-wing UAS configuration. Please develop the design and verification process as follows:
- Write down the dynamic equations, based on Fig. 4. Assume that theUAS is symmetric along the xz plane (Ixy = Iyz = 0), and ensure the answers are expressed in terms of forces, moments, velocities, angular velocities, mass and moments of inertia
- Write down the kinematic equations, based on Fig. 3. Ensure the answers are expressed in terms of Euler angles, velocities, and angular velocities.
- Use linearized forces to estimate X,Y,Z,L,M,N, with the inputs δe,δp,δa,δr (hint: consider aerodynamic derivatives and their equivalent for the control variables).
- Express the linearized system (longitudinal and lateral) based on Fig.6. Start from equations presented in the lecture notes. You may assume that all aerodynamic higher-order derivatives are zero except for Mw˙ and Zw˙ .
- Draw a control design diagram (using PID control) for an altitude holdautopilot, based on the longitudinal system.
- Draw a control design diagram (using PID control) for a level coordinated turn autopilot, based on the lateral system.
- Draw a simulation diagram where the previously designed control structure is implemented on a nonlinear dynamics model, developed in steps 1-3.
- Consider the nonlinear model defined in steps 1-3, and the linearizedmodel developed in step 4. For each model, provide one reason why the model can be useful in simulation, design or testing of controllers.
- Add your own comments detailing any additional design/simulationconsiderations that you would like to investigate.
The process shall be presented as a development ”recipe” where formulas, equations are specified, and serves as an almost programmable design sheet that the designer can follow to conduct the investigation.



