Abstract: Surge oscillations in a differential surge chamber have two degrees of freedom and are characterized by nonlinearities. The linear approximation provides stability criteria for small perturbations around the equilibrium ...

Abstract: A morphing quadrotor unmanned aerial vehicle (QUAV) possesses the remarkable ability to alter its shape, enabling it to navigate through gaps smaller than its wingspan. However, these deformations result in changes to the ...

Abstract: Polyethylene (PE) pipes have the advantages of low weight, corrosion resistance, high impact resistance, and superior flexibility, and have been widely used for various urban gas engineering. With the increase of service ...