Unsteady Aerodynamics and Aeroelastic Calculations — Lesson 2

This lesson covers the concept of unsteady aerodynamics and its application in aeroelastic calculations. It explains the seven quantities needed in aerodynamics, including density, pressure, velocity components, temperature, and viscosity. The lesson also discusses the seven equations required to solve these quantities, including the continuity equation, momentum equations, energy equation, and the equation of state. The instructor further explains the concept of potential flow and how it can be simplified to linearized potential flow. The lesson also introduces the concept of irrotational flow and defines terms such as circulation and the Kelvin theorem. For instance, the lesson explains how the Gauss theorem is used in formulating the equations of aerodynamics.

Video Highlights

04:30 - Discussion on the Navier Stokes equation and the Euler formulation.
13:26 - Explanation of the Gauss theorem and its application in the formulation of the equations.
20:45 - Discussion on the conservation of mass and momentum, and the application of the ideal gas lawn.
42:32 - Explanation of the concept of irrotational flow and the definition of circulation.
70:12 - Introduction to the Stokes theorem and the Kelvin theorem.

Key Takeaways

- Unsteady aerodynamics is a crucial concept in aeroelastic calculations.
- Seven quantities are needed in aerodynamics, including density, pressure, velocity components, temperature, and viscosity.
- Seven equations are required to solve these quantities, including the continuity equation, momentum equations, energy equation, and the equation of state.
- The concept of potential flow can be simplified to linearized potential flow.
- The concept of irrotational flow is introduced, and terms such as circulation and the Kelvin theorem are defined.