How and why does a wing generate lift?.- The bound vortex.- Frictionless air cannot provide lift: a paradox.- Drag, a nightmare or a challenge, depending on your point of view.- Pressure: The Bernoulli principle and flow energy conservation.- Pressure, pressure, it's all about pressure!.- Putting it all together in the real world.- The jet: fluid in motion.- Propulsion for flight: power or thrust?.- The compressor: engine keystone.- Bypass.- Other components of the jet engine.- More components: inlets, mixers, and nozzles.