<!-- AVIATION-NARRATIVE:START -->
## Nothing is free: aviation as a ledger of trades
Aviation is usually introduced as a triumph over gravity, and that framing hides the thing that actually organises the field. Flight was not a problem solved once in 1903. It is a permanent negotiation in which every gain is paid for somewhere else, and the engineering is the bookkeeping.
A wing that makes lift must trail vortices, and those vortices ARE induced drag -- lift is not free, it is billed. An engine that converts heat more efficiently sends cooler, wetter exhaust out of the nozzle and therefore makes contrails more readily, not less. An aircraft faster than sound does not break a barrier once; it drags a pressure cone behind it for the entire cruise, and everyone under the carpet pays. A rotor that can hover cannot also go fast, because the retreating blade runs out of airspeed long before the airframe runs out of power. And airspace that is safe is airspace that is mostly empty -- the separation minima that prevent collisions are the same numbers that cap how many aircraft the sky can hold.
Read that way, the subjects below stop being a catalogue of machines and become a single argument.
## Seven machines, from wing to airspace
<!-- SECTIONSIMS:BEGIN g34 2026-09-19 - microsims the articles linked here play; generated by _tools/generate/g34_portal_section_sims.py; do not hand-edit inside -->
*Microsims from the articles this section links:*
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/acoustics/Sonic_boom.html" data-title="Sonic boom"></div>
<!-- SECTIONSIMS:END -->
The seven three.js microsims in this room each isolate one of those trades, and each is a mechanism you can run rather than a picture to accept.
**[[Fixed-wing_aircraft]]** starts at the source. Lift on a *finite* wing is inseparable from the vortex system it must shed: the tip vortices bend the local wind downwards, tilting the lift vector backwards, and that backwards component is induced drag. The sim solves Prandtl's lifting line live, so raising aspect ratio visibly narrows the penalty -- which is the whole reason a glider looks like a glider. It also settles a persistent classroom argument: the Bernoulli-versus-Newton framing is a false dichotomy, and "equal transit time" was never the explanation.
**[[Aircraft_flight_dynamics]]** takes the wing and asks whether the aircraft built around it will stay pointed where the pilot left it. Roll, pitch and yaw are not independent -- ailerons produce adverse yaw, and roll and yaw can oscillate against each other as Dutch roll. The control that matters most is the least visible: move the centre of gravity aft of the neutral point and longitudinal stability changes SIGN. Watching that verdict flip is the fastest way to understand why loading an aircraft is a safety-of-flight matter and not a logistics detail.
**[[Turbojet]]** is the Brayton cycle made mechanical, drawn as a cutaway annulus with the compressor and turbine literally on one shaft. The turbine extracts exactly enough work to drive the compressor; everything left over is thrust. Starve the turbine and the whole thing spools down in front of you. The sim also makes the honest case for why high-bypass turbofans displaced turbojets on subsonic routes -- the reason is propulsive efficiency, not thermal efficiency.
**[[Helicopter]]** shows the trade that caps rotorcraft speed. In forward flight the advancing blade sees airspeed plus flight speed and the retreating blade sees the difference, so lift would be violently asymmetric and the aircraft would roll over. Flapping hinges fix it by letting each blade change its own angle of attack around the azimuth. Turn the hinge off and the rolling moment appears; push the speed up and the retreating blade stalls. That stall is the hard limit, and it falls straight out of the geometry.
**[[Sonic_boom]]** kills the most durable misconception in the subject. A boom is not a single event at the moment of "breaking the sound barrier." It is a cone that trails the aircraft for the whole supersonic cruise, sweeping a carpet tens of kilometres wide across the ground, so everyone beneath it is boomed as the aircraft passes. The cone half-angle is just arcsin(1/M), and the sim tallies who has been boomed and who never will be.
**[[Contrail]]** is a threshold, not a gradient, which is why two aircraft minutes apart can leave completely different trails. The Schmidt-Appleman criterion decides whether exhaust mixing crosses saturation at all; ice supersaturation then decides whether the trail vanishes in seconds or spreads into cirrus for hours. The counterintuitive result is worth sitting with: raising engine efficiency makes contrails MORE likely, because less of the fuel energy leaves as heat.
**[[Air_traffic_control]]** closes at system scale, where the trade is capacity against separation. Protected volumes are drawn as real cylinders, so conflict is literal intersection, and the vertical dimension does most of the work -- two aircraft nearly on top of each other laterally are perfectly legal 1000 ft apart. Switching between 2000 ft and 1000 ft minima above FL290 doubles the usable flight levels on screen, which is the clearest possible statement of what RVSM bought.
## How to read 218 children
The tree below is machine-harvested from the live Wikipedia article and sorted alphabetically -- exhaustive, and unreadable in the way exhaustive lists are. Most entries fall into one of five bands.
There is **the airframe and its aerodynamics**: wings, flight dynamics, three-axis control, composite structure, the vocabulary the rest is written in. There is **propulsion**: piston engines, the gas turbine and its descendants, fuels, and the electric and hydrogen work now competing to replace them. There is **the people and the sequence**: Cayley, Lilienthal, the Montgolfiers, the Wright brothers, Santos-Dumont, and the airships that lost the argument to heavier-than-air flight. There is **operations and the system**: air traffic control and management, instrument and visual flight rules, airlines, airports, ICAO and IATA, and the accident record that wrote most of the rules. And there is **consequence**: contrails, noise, emissions, sustainable fuels, and the environmental ledger that increasingly sets what aviation is permitted to do.
One caution carried over from the room's own scaffold: most entries below are intentional forward-references, not built pages. They render as links because the tree is real; the articles behind them mostly are not written yet. Treat the list as a map of the territory and a backlog, not as an index of existing content.
<!-- AVIATION-NARRATIVE:END -->
<!-- SECTIONSIMS:BEGIN g34 2026-09-19 - microsims the articles linked here play; generated by _tools/generate/g34_portal_section_sims.py; do not hand-edit inside -->
*Microsims from the articles linked below:*
<div class="wt-simrow">
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Glider_(aircraft).html" data-title="Glider (aircraft)"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Balloon_(aeronautics).html" data-title="Balloon (aeronautics)"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Airfoil.html" data-title="Airfoil"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Wing_warping.html" data-title="Wing warping"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Lift-induced_drag.html" data-title="Lift-induced drag"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Turbofan.html" data-title="Turbofan"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Range_(aeronautics).html" data-title="Range (aeronautics)"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Rate_of_climb.html" data-title="Rate of climb"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Center_of_gravity_of_an_aircraft.html" data-title="Center of gravity of an aircraft"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Takeoff.html" data-title="Takeoff"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Aircraft_specific_energy.html" data-title="Aircraft specific energy"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Stall_(fluid_dynamics).html" data-title="Stall (fluid dynamics)"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Flight_envelope.html" data-title="Flight envelope"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Wind_shear.html" data-title="Wind shear"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Aircraft_maintenance.html" data-title="Aircraft maintenance"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Aviation_accidents_and_incidents.html" data-title="Aviation accidents and incidents"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Automatic_Dependent_Surveillance–Broadcast.html" data-title="Automatic Dependent Surveillance–Broadcast"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Environmental_impact_of_aviation.html" data-title="Environmental impact of aviation"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Aircraft_noise_pollution.html" data-title="Aircraft noise pollution"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Electric_aircraft.html" data-title="Electric aircraft"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Unmanned_aerial_vehicle.html" data-title="Unmanned aerial vehicle"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Fly-by-wire.html" data-title="Fly-by-wire"></div>
</div>
<!-- SECTIONSIMS:END -->
<!-- GIFPLATE:BEGIN v1.0 g16 — room plate pending; pick a Commons animation and verify its licence with g17_gif_verify.py on a networked lane. Do not hand-edit inside. -->
## Images
*Room plate for [[Aviation]] pending — no Commons establishing shot has been selected yet. This is a live worklist item, not an error: run `g16` to choose a plate and `g17_gif_verify.py` (networked lane) to verify its licence before it renders here.*
<!-- GIFPLATE:END -->
The canonical spine of [[Aviation]]: the full tree-verified child structure of powered and unpowered [[Flight|flight]], from the [[Aerostat|aerostat]] and the [[Balloon_(aeronautics)|balloon]] through [[George_Cayley|Cayley]], [[Otto_Lilienthal|Lilienthal]] and the [[Wright_brothers|Wright brothers]] to the [[Jet_engine|jet engine]], the [[Airliner|airliner]], [[General_aviation|general aviation]], [[Military_aircraft|military aircraft]] and the [[Unmanned_aerial_vehicle|unmanned aerial vehicle]], all coordinated through [[Air_traffic_control|air traffic control]] and [[Air_traffic_management|air traffic management]]. Every entry below is a child of this hub's live Wikipedia article, publishable to Obsidian as the scaffold for route objects keyed to this hub.
## Crosslinks
<!-- SECTIONSIMS:BEGIN g34 2026-09-19 - microsims the articles linked here play; generated by _tools/generate/g34_portal_section_sims.py; do not hand-edit inside -->
*Microsims from the articles this section links:*
<div class="wt-simrow">
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Resistor.html" data-title="Resistor"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Capacitor.html" data-title="Capacitor"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Inductor.html" data-title="Inductor"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Diode.html" data-title="Diode"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Transistor.html" data-title="Transistor"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Alternating_current.html" data-title="Alternating current"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/electronics/Electric_motor.html" data-title="Electric motor"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/thury/Fluid_dynamics.html" data-title="Fluid dynamics"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/thury/Combustion.html" data-title="Combustion"></div>
</div>
<!-- SECTIONSIMS:END -->
Doors to adjacent rooms: [[PORTAL_Avionics]] for the [[Electronics|electronic]] systems carried aboard the [[Aircraft|aircraft]]; [[PORTAL_Physics]] for [[Aircraft_flight_dynamics|flight dynamics]], [[Fluid_dynamics|fluid dynamics]] and [[Combustion|combustion]]; [[PORTAL_Energy]] for [[Turbojet|turbojet]], [[Gas_turbine|gas-turbine]] and [[Hydrogen-powered_aircraft|hydrogen]] propulsion; and [[PORTAL_Reliability_engineering]] and [[PORTAL_Systems_engineering]] for the airworthiness and safety machinery behind every real aircraft.
<!-- NOTE 2026-08-05: seven Aviation three.js sims added to _3d_deploy_stage/ (Aircraft_flight_dynamics,
Fixed-wing_aircraft, Turbojet, Helicopter, Sonic_boom, Contrail, Air_traffic_control). Re-run g13 to
regenerate the gallery below and pick them up; the current entries predate them. -->
<!-- SIMGALLERY:BEGIN v1.0 g13 — generated iframe set; do not hand-edit inside -->
## Play every microsim on this page
<p class="microsim-gallery-note">Every microsim linked from this portal, embedded live. <strong>15 players</strong> — 10 threejs · 5 p5js.</p>
<ul class="microsim-gallery">
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/polytope4d.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Four-dimensional polytopes — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Four-dimensional polytopes</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/polytope4d.html" target="_blank" rel="noopener">open full-screen</a> · on <a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Three.js Microsim Master Class</a></div></div>
</li>
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<iframe src="https://wikitube-3d-microsims.netlify.app/Klein_bottle.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Klein bottle — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Klein bottle</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Klein_bottle.html" target="_blank" rel="noopener">open full-screen</a> · on <a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Three.js Microsim Master Class</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Platonic_solid.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Platonic solids — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Platonic solids</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Platonic_solid.html" target="_blank" rel="noopener">open full-screen</a> · on <a href="https://en.wikitube.io/wiki/WT!Three_js_Microsim_Master_Class">Three.js Microsim Master Class</a></div></div>
</li>
<li class="microsim-card" data-lib="p5js">
<iframe src="https://editor.p5js.org/sciencenibber/full/90jeLsBsW" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Acoustic wave — p5js microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">Acoustic wave</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/90jeLsBsW" target="_blank" rel="noopener">open in the p5 editor</a> · on <a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">p5.js Microsim Master Class</a></div></div>
</li>
<li class="microsim-card" data-lib="p5js">
<iframe src="https://editor.p5js.org/sciencenibber/full/tHGSVAofH" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Aliasing — p5js microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">Aliasing</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/tHGSVAofH" target="_blank" rel="noopener">open in the p5 editor</a> · on <a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">p5.js Microsim Master Class</a></div></div>
</li>
<li class="microsim-card" data-lib="p5js">
<iframe src="https://editor.p5js.org/sciencenibber/full/sevFmMxGw" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Fluid dynamics — p5js microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Fluid_dynamics">Fluid dynamics</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/sevFmMxGw" target="_blank" rel="noopener">open in the p5 editor</a></div></div>
</li>
<li class="microsim-card" data-lib="p5js">
<iframe src="https://editor.p5js.org/sciencenibber/full/HVNGd9nMv" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Histogram — p5js microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">Histogram</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/HVNGd9nMv" target="_blank" rel="noopener">open in the p5 editor</a> · on <a href="https://en.wikitube.io/wiki/WT!P5_js_Microsim_Master_Class">p5.js Microsim Master Class</a></div></div>
</li>
<li class="microsim-card" data-lib="p5js">
<iframe src="https://editor.p5js.org/sciencenibber/full/C1jNqYHch" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Transistor — p5js microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Transistor">Transistor</a></div><div class="ms-sub">p5js · <a href="https://editor.p5js.org/sciencenibber/full/C1jNqYHch" target="_blank" rel="noopener">open in the p5 editor</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Air_traffic_control.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Air Traffic Control — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Air_traffic_control">Air Traffic Control</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Air_traffic_control.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Aircraft_flight_dynamics.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Aircraft flight dynamics — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Aircraft_flight_dynamics">Aircraft flight dynamics</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Aircraft_flight_dynamics.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Contrail.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Contrail — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Contrail">Contrail</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Contrail.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Fixed-wing_aircraft.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Fixed-wing aircraft — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Fixed-wing_aircraft">Fixed-wing aircraft</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Fixed-wing_aircraft.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Helicopter.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Helicopter: dissymmetry of lift — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Helicopter">Helicopter: dissymmetry of lift</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Helicopter.html" target="_blank" rel="noopener">open full-screen</a> · on <a href="https://en.wikitube.io/wiki/Helicopter">Helicopter</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Sonic_boom.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Sonic boom — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Sonic_boom">Sonic boom</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Sonic_boom.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
<li class="microsim-card" data-lib="threejs">
<iframe src="https://wikitube-3d-microsims.netlify.app/Turbojet.html" loading="lazy" frameborder="0" sandbox="allow-scripts allow-same-origin" title="Turbojet — threejs microsim"></iframe>
<div class="ms-meta"><div class="ms-title"><a href="https://en.wikitube.io/wiki/Turbojet">Turbojet</a></div><div class="ms-sub">threejs · <a href="https://wikitube-3d-microsims.netlify.app/Turbojet.html" target="_blank" rel="noopener">open full-screen</a></div></div>
</li>
</ul>
<!-- SIMGALLERY:END -->
<!-- CRAFT-LINK:START g12 -->
**Craft standard:** Both craft standards apply here — [[WT!Three_js_Microsim_Master_Class|three.js]] and [[WT!P5_js_Microsim_Master_Class|p5.js]].
<!-- CRAFT-LINK:END -->
<!-- SECTIONSIMS:BEGIN g34 2026-09-19 - microsims the articles linked here play; generated by _tools/generate/g34_portal_section_sims.py; do not hand-edit inside -->
*Microsims from the articles linked below:*
<div class="wt-simrow">
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Integrated_modular_avionics.html" data-title="Integrated modular avionics"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Radiation_hardening.html" data-title="Radiation hardening"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Airband.html" data-title="Airband"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Radio_navigation.html" data-title="Radio navigation"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Pitot–static_system.html" data-title="Pitot–static system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Inertial_navigation_system.html" data-title="Inertial navigation system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Global_Positioning_System.html" data-title="Global Positioning System"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Instrument_landing_system.html" data-title="Instrument landing system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Flight_instruments.html" data-title="Flight instruments"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Head-up_display.html" data-title="Head-up display"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/Autopilot.html" data-title="Autopilot"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/FADEC.html" data-title="FADEC"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Aircraft_fuel_system.html" data-title="Aircraft fuel system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Traffic_collision_avoidance_system.html" data-title="Traffic collision avoidance system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Terrain_awareness_and_warning_system.html" data-title="Terrain awareness and warning system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Flight_recorder.html" data-title="Flight recorder"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Weather_radar.html" data-title="Weather radar"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Airborne_wind_shear_detection_and_alert_system.html" data-title="Airborne wind shear detection and alert system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Flight_management_system.html" data-title="Flight management system"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Link_16.html" data-title="Link 16"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Radar.html" data-title="Radar"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Sonobuoy.html" data-title="Sonobuoy"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Forward-looking_infrared.html" data-title="Forward-looking infrared"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Radar_warning_receiver.html" data-title="Radar warning receiver"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/MIL-STD-1553.html" data-title="MIL-STD-1553"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/thury/Buoyancy.html" data-title="Buoyancy"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/matter/Electric_battery.html" data-title="Electric battery"></div>
<div class="wt-sim" data-src="https://wikitube-3d-microsims.netlify.app/flight/Fuel_economy_in_aircraft.html" data-title="Fuel economy in aircraft"></div>
</div>
<!-- SECTIONSIMS:END -->
<!-- TREEGEN:BEGIN v1.4 src=_registry/linktree/Aviation.json harvested=2026-08-05T14:26:20Z children=218 — generated by g01_hub_portals.py; do not hand-edit inside this block -->
## Canonical link structure — 218 tree-verified children
Hub article: [[Aviation]] · tree harvested 2026-08-05T14:26:20Z · every entry below is in this hub's harvested
child tree (v09-gated). Unbuilt links are intentional forward-refs: the populate scaffold.
**A** — [[Abbas_ibn_Firnas]] · [[ACAC_consortium]] · [[Ader_Avion_III]] · [[Ader_Éole]] · [[Aerial_photography]] · [[Aerial_reconnaissance]] · [[Aeronautics]] · [[Aerosol]] · [[Aerostat]] · [[Aero_Engine_Corporation_of_China]] · [[Airbus]] · [[Aircraft]] · [[Aircraft_flight_dynamics]] · [[Airliner]] · [[Airplane]] · [[Airship]] · [[Air_charter]] · [[Air_traffic_control]] · [[Air_traffic_controller]] · [[Air_traffic_management]] · [[Alberto_Santos-Dumont]] · [[Antonov]] · [[Archytas]] · [[Aviation_biofuel]] · [[Aviation_gasoline]] · [[Avionics]]
**B** — [[Balloon_(aeronautics)]] · [[Bartholomeu_Lourenço_de_Gusmão]] · [[Beechcraft]] · [[Berlin]] · [[Boeing]] · [[Boeing_707]] · [[Bombardier_Aerospace]] · [[Bomber]] · [[Brazil]] · [[Buoyancy]]
**C** — [[C-130_Hercules]] · [[C-17_Globemaster_III]] · [[Canada]] · [[Canada–United_States_relations]] · [[Carbon_dioxide]] · [[Cargo_aircraft]] · [[Cessna]] · [[Charles_Furnas]] · [[Charles_Kingsford_Smith]] · [[Charles_Lindbergh]] · [[China]] · [[Cirrus_cloud]] · [[Climate_change_mitigation]] · [[Climate_crisis]] · [[Cloud_computing]] · [[Clément_Ader]] · [[Comac]] · [[Comac_ARJ21]] · [[Combustion]] · [[Commercial_aviation]] · [[Communication]] · [[Communications_satellite]] · [[Composite_material]] · [[Concorde]] · [[Contrail]] · [[Convention_on_International_Civil_Aviation]] · [[Cybersecurity]]
**D** — [[David_Schwarz_(aviation_inventor)]] · [[De_Havilland_Comet]] · [[Douglas_DC-3]]
**E** — [[Eilmer_of_Malmesbury]] · [[Electricity]] · [[Electric_battery]] · [[Embraer]] · [[Environmental_impact_of_aviation]] · [[Ethanol]] · [[Extended_reality]]
**F** — [[Facial_recognition_system]] · [[Father_of_aviation]] · [[Fighter_aircraft]] · [[Fixed-wing_aircraft]] · [[Flag_carrier]] · [[Flight]] · [[Flight_length]] · [[Flight_training]] · [[Fort_Myer]] · [[France]] · [[Free_content]] · [[Fuel_economy_in_aircraft]]
**G** — [[Gabriel_de_La_Landelle]] · [[Gasoline]] · [[Gas_turbine]] · [[General_aviation]] · [[General_Electric]] · [[George_Cayley]] · [[Giffard_dirigible]] · [[Glider_(aircraft)]] · [[Glider_(sailplane)]] · [[Global_Positioning_System]] · [[Greenhouse_gas]] · [[Ground_attack]]
**H** — [[Hang_gliding]] · [[Hans_von_Ohain]] · [[Head-up_display]] · [[Heavier_than_air]] · [[Helicopter]] · [[Henri_Giffard]] · [[Homebuilt_aircraft]] · [[Honeywell_International]] · [[Hot_air_balloon]] · [[Hybrid_electric_aircraft]] · [[Hydrogen-powered_aircraft]]
**I** — [[Icarus]] · [[Ilyushin]] · [[Index_of_aviation_articles]] · [[Instrument_flight_rules]] · [[International_Air_Transport_Association]] · [[International_Civil_Aviation_Organization]]
**J** — [[Jamshid]] · [[Japan]] · [[Jean-Pierre_Blanchard]] · [[Jet_airliner]] · [[Jet_engine]] · [[Joint_Base_Myer–Henderson_Hall]]
**K** — [[Kay_Kāvus]] · [[KLM]]
**L** — [[LED]] · [[Light_aircraft]] · [[Lilienthal_Normalsegelapparat]] · [[Long_haul]] · [[Low-cost_carrier]] · [[LZ_127_Graf_Zeppelin]] · [[LZ_129_Hindenburg]]
**M** — [[McKinsey_&_Company]] · [[Military_aircraft]] · [[Military_transport_aircraft]] · [[Mil_Mi-26]] · [[Missile]] · [[Mitsubishi_Electric]] · [[Montgolfier_brothers]] · [[MQ-1C_Gray_Eagle]] · [[MQ-9]]
**N** — [[Neologism]] · [[Nitrogen_oxide]] · [[Noise_pollution]] · [[North_America]]
**O** — [[Open_skies]] · [[Orville_Wright]] · [[Otto_Lilienthal]] · [[Ozone]]
**P** — [[Pan_Am]] · [[Parachuting]] · [[Paragliding]] · [[Patent]] · [[Patent_application]] · [[Piper_Aircraft]] · [[Power-to-weight_ratio]] · [[Powered_hang_glider]] · [[Private_aviation]] · [[Propulsion]]
**R** — [[R38-class_airship]] · [[Radar]] · [[Regional_airliner]] · [[Rigid_airship]] · [[Robotics]] · [[Rocket]] · [[Rolls-Royce_Holdings]] · [[RQ-4]] · [[RTX_Corporation]] · [[Russia]] · [[Ryanair]]
**S** — [[Safran]] · [[Scheduled_air_transport]] · [[Security]] · [[September_11_attacks]] · [[Severe_acute_respiratory_syndrome]] · [[Shah]] · [[Solar_energy]] · [[Sonic_boom]] · [[Soot]] · [[Southwest_Airlines]] · [[South_Korea]] · [[Spaceflight]] · [[SpaceShipOne]] · [[Speech_recognition]] · [[Strategic_bombing]] · [[Sukhoi]] · [[Supersonic_transport]] · [[Surveillance_aircraft]] · [[Sustainable_aviation_fuels]] · [[Synthetic_vision]]
**T** — [[Tactical_bombing]] · [[Tarentum]] · [[Tenerife_airport_disaster]] · [[Tetraethyllead]] · [[Thomas_Selfridge]] · [[Three-axis]] · [[Timeline_of_aviation]] · [[Traffic_reporting]] · [[Transatlantic_flight_of_Alcock_and_Brown]] · [[Transistor]] · [[Transport_in_the_European_Union]] · [[Tropopause]] · [[Tupolev]] · [[Turbojet]]
**U** — [[Ukraine]] · [[Ultralight_aviation]] · [[United_Aircraft_Corporation]] · [[United_States]] · [[Unmanned_aerial_vehicle]] · [[User_interface]]
**V** — [[Visual_flight_rules]]
**W** — [[WestJet]] · [[Wired_glove]] · [[World_Intellectual_Property_Organization]] · [[World_War_I]] · [[World_War_II]] · [[Wright_brothers]] · [[Wright_Flyer]] · [[Wright_Model_A]]
**Y** — [[Yakovlev]]
**Z** — [[Zeppelin]]
## Route objects (§10.3 stubs — placeholders declared in `_registry/firebase/`)
- **microsim** — `microsim/{library}/Aviation__{YYYYMMDD}T{HHMM}Z/`
- **songs** — `songs/{Band_name}/{Song_name}/Aviation/`
- **semiotics** — `semiotics/{authorizer}/{set}/{Song_name}/{audio_video_id}/Aviation/`
- **cardset** — `cardset/{authorizer}/{set}/Aviation/`
- **games** — `games/quizzes/Aviation/`
- **channel_stream** — `channel_stream/Aviation/`
- **transcripts** — `transcripts/{audio_video_id}/Aviation/`
Hub + children route keys are pre-declared in `_registry/firebase/expansion_matches.csv`
(54,000 Related Wikipedia Matches). Minting any leaf passes §10.1 registration.
<!-- TREEGEN:END -->
---
*Repopulated 2026-09-19 · append-only · source: _tools/generate/g34_portal_section_sims.py@36068b13 (players of the linked articles, each URL 200-checked) · 2 added · 0 deletions*