Aerospace Engineering: Basics of Aerodynamics

Explore the short history of aviation, tracing kites, sky lanterns, hot air balloons, and hydrogen balloons, to dirigibles and the rise of powered, heavier-than-air flight.

Explore the standard atmospheric model across three layers, detailing temperature, pressure, and density changes with altitude. Learn how these properties guide aircraft design and performance.

Explore the fundamental properties of gases and air—pressure, temperature, density, viscosity—and the kinetic theory, linking micro- and macro-scale behavior to aerodynamics and propulsion.

Explore gas laws and the ideal gas to understand pressure, volume, and temperature relationships, including Boyle's law, Charles and Gay-Lussac, and the combined gas law.

Discover how gliders generate speed by converting altitude into kinetic energy, and analyze lift, drag, weight, glide angle, and trajectories to understand aerodynamic performance.

Explore Newton's laws of motion and their role in aerodynamics, including inertia, force, acceleration, and action-reaction, with aircraft, rockets, and kite examples.

Explore fundamental conservation laws: mass, momentum, and energy, and their application to solids, fluids, and moving gases, including the continuity equation and Euler's equation for aerodynamics.

Explore the fundamentals of weight, balance, and aerodynamic forces, including center of gravity and center of pressure, torque and moments, lift and drag, and Bernoulli's and Newton's perspectives on flight.

Explore the physics of free fall, gravity, and air resistance, derive terminal velocity from the drag equation, and compare vacuum and atmospheric motion.

Explore sound waves and the Doppler effect, linking wavelength and frequency to pitch, as a moving source alters observed sound while the speed of sound depends on the medium.

Explore speed of sound, Mach number, and flight regimes, and learn how compressibility and similarity parameters govern lift, drag, and shock waves across subsonic, transonic, supersonic, and hypersonic regimes.

Explore compressible flow and isentropic relations, and analyze shock waves—normal and oblique—through Mach number effects, pressure–temperature–density changes, and area–Mach relations.

Explore mass flow rate in aerodynamics, from conservation of mass and continuity to density, compressible flow, Mach number, and isentropic relations, with applications to nozzles and engines.

Explore the four forces of flight—lift, weight, drag, and thrust—and how they interact with flight axes, the center of gravity, and trim to achieve steady, level, and maneuvering flight.

Weight is Earth's gravity acting on an airplane, a field force separate from lift. Engineers determine total weight and center of gravity from component weights and moments.

Understand how thrust propels aircraft by accelerating gas through engines, using the thrust equation, mass flow rate, and exit velocity across propulsion types and excess thrust.

Explore the sources of drag in aerospace—skin friction, form drag, induced drag, wave and ram drag—through the drag equation using CD, density, velocity, and reference area.

Explore the concept of lift within aerospace engineering, introducing how aerodynamic forces enable flight and the fundamentals of lift generation in basic aerodynamics.

Analyze how fluid pressure acting over a body generates lift, drag, and moments, and how the aerodynamic center and center of pressure enable trimmed, stable flight.

Explore the fundamentals of aircraft motion and forces, including translation, rotation, velocity, acceleration, and Newton's laws, and see how lift, drag, thrust, and weight govern flight.

Explore aircraft rotations in roll, pitch, and yaw using a center-of-gravity coordinate system and learn how ailerons, elevators, and rudder create the moments that steer flight.

Explore airplane components and definitions, including the fuselage, wings, cockpit, and key control surfaces, and learn how lift, thrust, drag, and center of gravity shape flight.

Explore propulsion systems and thrust generation across turbofan, turbojet, turboprop, piston engines, and rockets, including engine placement, powerplants, and one engine in operative flight safety.

Explore wing geometry and area, including planform, aspect ratio, and wing area calculations for rectangular, trapezoidal, and triangular wings, highlighting lift, drag, and design tradeoffs.

Learn how ailerons create roll by producing lift differences between wings, using inner and outer sets with speed-based switching, and spoilers for rapid, controllable banking in modern airliners.

Explore how flaps, slats, and spoilers function as high lift devices to delay stall, increase lift at lower speeds, and control descent, roll, and landing performance.

Explore how the horizontal stabilizer and elevator control aircraft pitch and lift, and how stabilators merge stabilizer and elevator to enhance pitch control during takeoff and turns.

Explore how vertical stabilizers and rudders control yaw, and how various tabs—trim, balance, servo, anti-servo, and spring—enhance stability and reduce pilot effort.

Explore how pressure distributions and boundary layer shear generate lift and drag on airfoils, analyze dynamic pressure and pressure coefficients, and compare subsonic and transonic flow effects.

Explore airfoil selection for aircraft performance. See how camber, thickness, chord, and leading-edge radius influence lift-to-drag, stall behavior, and overall efficiency across flight regimes, guided by NACA methods.