Short, useful pieces written to answer a specific question on first read. No fluff. Companion reading for the aircraft gallery and live radar.
How Do Airplanes Fly? — Lift, Drag, Thrust and Weight
The four forces that keep an aircraft airborne, how aerofoils generate lift, what stall actually means, and why swept wings behave differently from straight ones.
How Do Helicopters Fly? — Rotors, Torque and Collective
How a spinning rotor replaces a wing, why the tail rotor exists, what collective and cyclic controls do, and how autorotation lets a helicopter land safely after an engine failure.
What Is Supersonic Flight? — Mach, Shockwaves and the Sound Barrier
Why the speed of sound changes with altitude, what a shockwave is, how the area rule reshaped jet fighters, and the difference between supercruise and brute-force afterburner.
How Do Jet Engines Work? — The Brayton Cycle, Turbofans and Afterburners
Suck, squeeze, bang, blow — the thermodynamic cycle behind every jet engine, and why a high-bypass turbofan moves a wide airliner while a low-bypass afterburning jet pushes a Mach 2 fighter.
How Do Rocket Engines Work? — Liquid, Solid, Hybrid
Why rockets carry their own oxidiser, the four mainstream propellant choices, engine cycles from gas-generator to full-flow staged combustion, and why methalox is taking over.
VTOL, STOVL and CTOL Explained
What each takeoff and landing mode costs in payload and range, how the Harrier's four nozzles and the F-35B's LiftFan differ, and why pure VTOL fighters have never succeeded at scale.
How Radar Works — Pulse, Doppler and AESA Explained
How airborne radar measures range from pulse timing, velocity from Doppler shift, and why an AESA array with 1,956 modules can track dozens of targets at once while hiding its own emissions.
What Is Fly-by-Wire? — How Digital Flight Controls Work
Why the F-16 falls out of the sky in 0.3 seconds without its computers, how Airbus envelope protection differs from Boeing's soft limits, and what dissimilar redundancy means for safety.
What Is a Stealth Aircraft? — How Planes Avoid Radar
Radar cross-section explained, why geometry matters more than material, what RAM coatings do and don't absorb, and how the F-117, B-2, F-22 and B-21 each pushed the approach further.
Fighter Jet Generations Explained — From 1st Gen to 6th Gen
Eight decades of jet fighters sorted into six generations — what technology leap defines each, which aircraft belong, and why “5th generation” became a marketing phrase.
Air-to-Air Missiles — AIM-120, AIM-9, Meteor and More
How IR and active-radar seekers actually work, what a no-escape zone really means, and how AIM-120D, R-77, PL-15, Meteor ramjet, and R-37M differ in BVR engagements.
What Is AWACS? — E-3 Sentry, E-7 Wedgetail and E-2D
How an airborne radar dome extends the horizon by hundreds of nautical miles, why the rotodome is being replaced by a flat MESA antenna, and how AWACS feeds 5th-gen fighters via Link 16.
How Do Aircraft Carriers Work? — Catapults, Arresting Gear and the Air Wing
How a 100,000-tonne ship launches jet aircraft every 90 seconds — CATOBAR vs STOBAR vs STOVL, steam vs EMALS, the colour-coded flight deck crew, and the shift to unmanned aircraft.
How Aerial Refueling Works — Boom vs Probe-and-Drogue
The two competing refuelling systems (USAF flying boom at 8,000 lb/min vs NATO probe-and-drogue), why the KC-46 and A330 MRTT do both, and the 11-tanker Black Buck raid that proved their value.
Cruise vs Ballistic Missiles — Key Differences
Why Tomahawk is Mach 0.7 and a Trident D5 warhead is Mach 25, how cruise missiles fly using TERCOM and DSMAC while ballistics arc through space, and why hypersonic glide vehicles blur the line.
What Is ETOPS? — Twin-Engine Ocean Crossing Rules
How a 60-minute regulation became ETOPS-370 for the A350, why engine reliability killed the four-engine commercial fleet, and what dispatch reliability means on a transpacific 787.
What Is a Black Box? — FDR vs CVR Explained
Why the box is actually orange, how an FDR records 1,000+ parameters and a CVR captures cockpit audio, and how the unit survives 3,400 g impacts, 1,100°C fires, and 6,000 m underwater for 30 days.
V1, Vr, V2 Explained — Takeoff Decision Speeds
The three takeoff speeds every airline pilot lives by, what the “V1” call really commits the crew to, and how balanced field length and accelerate-stop distance shape every commercial takeoff.
What Is ADS-B?
The transponder protocol that powers every live flight tracker on the web. What it is, what it broadcasts, how the data reaches your browser, and why it is free.
Squawk Codes Explained — 7500, 7600, 7700 & More
What 4-digit transponder codes actually do, why 7500/7600/7700 trigger different ATC responses on the ground, and how Mode S quietly replaced the 4,096-code system that ran the world for 50 years.
What Is TCAS? — Traffic Collision Avoidance Explained
How the system listens to nearby transponders, the difference between a TA and an RA, why Airbus and Boeing crews must follow CLIMB CLIMB over ATC, and how Überlingen rewrote the rules.
Airspace Classes A–G Explained
ICAO's seven-class taxonomy decoded — what separates Class A from Class G, where the Mode C veil sits, and what altitudes airliners and GA aircraft actually fly.
How to Identify an Aircraft Overhead
A field guide. Four visual cues — wing position, engine count and placement, tail shape, sound — pin down most aircraft to within a generation in seconds.
ICAO Aircraft Type Codes Explained
B738, A20N, F16, EC35 — what the codes on flight trackers actually mean, with a reference table of the 30 most common civil types and how the naming convention works.