Editing Glossary of Formula One technical terms

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This glossary provides a rigorous, academically structured definition of technical terms used in Formula One. Terms are defined in engineering and regulatory contexts, with cross-references to relevant articles.

== A ==
; '''Aero rake''': A sensor array used during testing to measure airflow around the car. Often mounted with pitot tubes or pressure probes.
; '''Airbox''': The intake above the driver’s head that feeds air to the engine, often integrated with the roll hoop.
; '''Apex''': The innermost point of a racing line through a corner.
; '''Anti-dive geometry''': Suspension design that resists compression under braking, reducing forward pitch.

== B ==
; '''Ballast''': Dense material (often tungsten) placed strategically to optimise weight distribution.
; '''Beam wing''': A secondary horizontal aerofoil element located near the rear diffuser to condition airflow.
; '''Blistering''': A type of tyre degradation where internal heat causes bubbles in the rubber.

== C ==
; '''Camber''': The vertical tilt of a wheel when viewed from the front. Negative camber improves lateral grip.
; '''CFD (Computational Fluid Dynamics)''': Simulation method used to analyse airflow without wind tunnel testing.
; '''Chassis''': The structural base of the car, typically a carbon-fibre monocoque.
; '''Coanda effect''': Tendency of airflow to follow a surface contour. Used in exhaust flow manipulation.

== D ==
; '''Diffuser''': The expanding underfloor section at the rear, which accelerates airflow to generate downforce.
; '''DRS (Drag Reduction System)''': A movable rear-wing element allowing reduced drag on straights. Regulated for activation zones only.

== E ==
; '''ECU (Electronic Control Unit)''': Standardised control hardware managing engine, gearbox, and hybrid systems.
; '''ERS (Energy Recovery System)''': The hybrid system that recovers kinetic and thermal energy (MGU-K and MGU-H).
; '''EBD (Exhaust-Blown Diffuser)''': Technique exploiting exhaust gases to seal the diffuser, banned post-2011.

== F ==
; '''Flat spot''': A section of tyre worn flat by a locked wheel under braking. Causes vibrations and reduced performance.
; '''Floor edge vortex''': A rotating airflow generated at the floor boundary, crucial for sealing ground-effect aerodynamics.

== G ==
; '''Ground effect''': Aerodynamic principle using underbody airflow to create downforce through pressure differentials.
; '''Gurney flap''': A small vertical lip added to a wing’s trailing edge to increase downforce.

== H ==
; '''Halo''': Titanium safety structure protecting the driver’s head from debris.
; '''HANS device''': Head And Neck Support device reducing whiplash in impacts.

== I ==
; '''Inboard suspension''': Suspension components (springs/dampers) mounted inside the chassis, connected via push/pull rods.

== K ==
; '''KERS (Kinetic Energy Recovery System)''': Original hybrid system (2009–2013) recovering braking energy via MGU-K.

== L ==
; '''Load cell''': A sensor that measures force (e.g. on suspension arms or brake pedals).
; '''Lift and coast''': A fuel-saving and thermal management driving technique used during races.

== M ==
; '''Monocoque''': Single-piece structural shell housing driver and fuel cell. Provides crash safety.
; '''MGU-K''': Motor Generator Unit – Kinetic. Recovers energy under braking and redeploys it for acceleration.
; '''MGU-H''': Motor Generator Unit – Heat. Recovers energy from exhaust gases (to be removed in 2026).

== N ==
; '''Nomex''': A fire-resistant material used in driver suits and cockpit insulation.

== O ==
; '''Outwash''': Aero strategy to deflect air away from tyres to reduce drag and tyre wake.

== P ==
; '''Parc Fermé''': The period when car setup changes are restricted. Begins post-qualifying until race start.
; '''Plank''': A wooden (jabroc) strip under the car to monitor legality of ride height.
; '''Power unit (PU)''': Modern F1 engine, including ICE, MGU-K, MGU-H, turbo, and control systems.

== Q ==
; '''Quali mode''': Engine mapping used to maximise power output during qualifying (now regulated).

== R ==
; '''Rake (vehicle attitude)''': The longitudinal tilt of the car. High rake increases underfloor airflow acceleration.
; '''Regen''': Short for regenerative braking via MGU-K.

== S ==
; '''Sidepod''': Bodywork housing radiators and cooling systems.
; '''Slipstream''': Reduced air pressure behind a car, reducing drag for the following car.
; '''Stint''': A continuous run between pit stops.

== T ==
; '''Telemetry''': Wireless data transmission from car to pit wall in real-time.
; '''Torque map''': Engine control settings defining torque delivery.
; '''T-tray''': Front floor extension (officially 'bib') supporting plank and controlling airflow.

== U ==
; '''Undercut''': Pit strategy where a driver pits early to gain advantage with fresher tyres.
; '''Understeer''': Condition where the front tyres lose grip before the rear, causing the car to turn less than desired.

== V ==
; '''Vortex generator''': Small aero device used to control flow separation and energise airflow.

== W ==
; '''Wake turbulence''': Chaotic air left behind a car. Modern rules aim to reduce its disruptive effect.
; '''Wind tunnel''': Physical testing apparatus to measure aerodynamic forces.

== Y ==
; '''Yaw angle''': The rotation of the car around its vertical axis, relevant in corner entry stability.

== Z ==
; '''Zylon''': Ultra-strong polymer used in side-impact structures and cockpit panels.

== See also ==
* [[Aerodynamics]]
* [[Power unit]]
* [[Tyres]]
* [[Chassis]]
* [[Regulation evolution]]
* [[Strategy modelling]]

== References ==
* FIA Technical Glossary