19. Airship Dynamically Stable Response || Airship Nonlinear Dynamic Stability Analysis - 2024

Based on the comment shared by one of our users - thekapilcomedyshow380 (assuming name: Kapil). I have changed the thrust force from values [1, 1] to [4000N, 2000N]. The results are now stable.
A fact from reference - that the CG of an airship should be ahead of the CB and the typical range of the XG = [0.5m to 2.0m] and ZG = [1.0m to 6.0m].
After changing thrust forces and the value of XG = [1.0, 1.5, 1.7, 1.8]m. We got most stable results from the airship. Hence, proving the designed nonlinear system in Simulink is accurate and can give reasonable results for any airship.
Comment by #thekapilcomedyshow380:
• 18. Checking Dynamic S...
About Course
This course offers a comprehensive guide to analyzing and solving nonlinear equations of motion for airships using Matlab and Simulink. Beginning with the fundamentals of airship dynamics, the course delves into the forces and moments acting on airships, followed by the derivation of nonlinear equations. Participants will learn how to implement these equations in Matlab and develop Simulink block diagrams to simulate airship behavior. The course emphasizes stability analysis, explaining how to linearize nonlinear equations, conduct eigenvalue analysis, and perform real-time stability checks for various flight conditions. Practical considerations such as model validation, control system design, and running simulation scenarios are also covered. Advanced topics include handling higher-order nonlinear effects and optimizing airship design for improved stability and performance. By the end of the course, learners will have a robust understanding of airship dynamics and the tools to ensure stable flight in various conditions.
Airship dynamics, nonlinear equations of motion, Matlab, Simulink, stability analysis, airship stability, flight simulation, airship control systems, model validation, real-time stability, aerodynamic forces, buoyancy forces, airship optimization.

[@toolsmathematical]

Thank you @thekapilcomedyshow380 for your valuable feedback in previous video. Based on your feedback the dynamic response of S-500 airship is stable.

[@poojapatelpatel7445]

Natural dynamic response is stable...have you checked the Volume and mass for stability? They can also play a crucial role for stability.

[@toolsmathematical]

The volume given in the reference is also slightly high it has to reduce a slight to get stable response. Thanks for highlighting it.