aerospace-engineering

## What I do - Analyze aerodynamic forces and fluid dynamics around airframes and components - Design and simulate aircraft structures, materials, and propulsion systems - Calculate flight mechanics, stability, and control characteristics - Evaluate propulsion systems including jet engines, turbines, and rockets - Perform structural analysis using finite element methods - Model orbital mechanics and spacecraft trajectories ## When to use me - When working on aircraft or spacecraft design projects - When analyzing aerodynamic performance or fluid flow - When calculating flight dynamics and control systems - When evaluating structural integrity of aerospace components - When designing propulsion systems or analyzing engine performance - When modeling orbital trajectories or satellite operations ## Key Concepts ### Aerodynamics Aerodynamics studies how air flows around objects and the forces generated: ```python # Lift equation L = 0.5 * rho * V**2 * S * Cl # Drag equation D = 0.5 * rho * V**2 * S * Cd # Reynolds number (laminar vs turbulent flow) Re = (rho * V * L) / mu ``` Where ρ = air density, V = velocity, S = wing area, Cl/Cd = coefficients. ### Flight Mechanics ```python # Thrust required for level flight at constant altitude TR = W * (Cd0 + (K * Cl**2)) / Cl # Turn rate for coordinated turn n = 1 / cos(bank_angle) # load factor # Range equation (Breguet) R = (V / SFC) * (L/D) * ln(W_start / W_end) ``` ### Structural Analysis ```python # Stress-strain relationship (Hooke's Law) sigma = E * epsilon # Von Mises stress for yielding criteria sigma_vm = sqrt(0.5 * ((s1-s2)**2 + (s2-s3)**2 + (s3-s1)**2)) # Factor of Safety FoS = Ultimate_Stress / Working_Stress ``` ### Orbital Mechanics ```python # Orbital velocity v = sqrt(mu / r) # Escape velocity v_esc = sqrt(2 * mu / r) # Period of circular orbit T = 2 * pi * sqrt(a**3 / mu) ``` ### Common Software Tools | Tool | Purpose | |------|---------| | ANSYS Fluent | CFD analysis | | STAR-CCM+ | Multi-physics simulation | | NASA OpenVSP | Vehicle preliminary design | | AVL | aerodynamic prediction | | JSBSim | flight dynamics simulation |