It is my understanding that you need to model landing gear for the UAV. The following links will help you through the design process.
To model a wing landing gear mechanism that can deploy and retract based on the input deploy signal, please refer to the following documentation link,
To model a landing gear including main and lock hydraulic actuators, with multibody dynamics, please refer to the following File exchange link:
To model and simulate landing gear actuators using Simscape with mechanical and hydraulic systems, also using the system-level model to refine requirements, and tune component parameters, please refer to the following webinar video,
