✈️ Aviation
Avionics, hydraulics, fuel systems, landing gear & flight controls.
Parts of an Airplane Wing: What You’re Looking At From the Window Seat
You’re in the seat over the wing. On approach, the whole thing seems to come apart — panels slide backward, surfaces droop down, and the moment the wheels…
Air Data Systems: How an Aircraft Knows Its Speed, Altitude & More
An aircraft has no speedometer cable, no GPS-style altitude lookup, no measuring tape to the ground. Everything it knows about speed and height, it learns by feeling the…
Aircraft Navigation System: How Planes Always Know Where They Are
Somewhere over the ocean tonight, an airliner will be tracking its position to within meters — with no roads below, no landmarks in sight, and nothing outside the…
What Is FMS? (Flight Management System) Explained
It’s been called the brain behind every safe and smooth flight — and that’s barely an exaggeration. Save the chart above for your notes, then let’s go through…
Aircraft Electrical System: How Power Reaches Every Bus on Board
An aircraft electrical system generates, converts, distributes and protects the power that runs every system on board. Transport aircraft typically produce 115 V, 400 Hz three-phase AC from…
Aircraft Hydraulic System: How Pressurised Fluid Moves Controls, Gear and Brakes
An aircraft hydraulic system transmits force by pumping incompressible fluid at high pressure — commonly 3,000 psi, and 5,000 psi on some newer wide-bodies — through sealed lines…
What Is an Aircraft Auxiliary Power Unit and How Does It Work?
An auxiliary power unit (APU) is a small gas turbine engine mounted in the aircraft’s tail cone that supplies electrical power and pneumatic bleed air independently of the…
Aircraft Fuel System Explained: Every Component
From tank to engine — a complete visual breakdown of how an aircraft fuel system works, including pumps, filters, valves and common failure points.