Channel Reference¶
Every per-sample data channel and summary metric available in Trace View, Metrics, and Math Channels, with its unit and meaning. This page is generated directly from the app's own channel definitions, so it always matches what you see in the UI.
Trace Channels¶
Per-sample channels plotted in Trace View and referenced in Math Channels. defaultUnit is the SI unit the value is stored/calculated in; displayUnit is what the UI shows by default (usually the same, but not always — see the Data Types page for how unit conversion works).
Driver¶
| Channel | Unit | Description |
|---|---|---|
vCar |
km/h | Vehicle speed |
NGear |
- | Selected gear |
aSteerNeutral |
degrees | Neutral steering angle |
gLat |
m/s² | Lateral acceleration |
gLong |
m/s² | Longitudinal acceleration |
gSum |
m/s² | Total acceleration |
rPedal |
% | Accelerator pedal position |
Handling¶
| Channel | Unit | Description |
|---|---|---|
vCar |
km/h | Vehicle speed |
aSteerNeutral |
degrees | Neutral steering angle |
gLat |
m/s² | Lateral acceleration |
aSlipCar |
degrees | Vehicle slip angle |
aUndersteer |
degrees | Understeer angle |
nYaw |
degrees/s | Yaw rate |
MYaw |
Nm | Yaw moment |
Engine¶
| Channel | Unit | Description |
|---|---|---|
vCar |
km/h | Vehicle speed |
NGear |
- | Selected gear |
nEngine |
RPM | Engine RPM |
MPowertrain |
Nm | Delivered torque after driveline losses, referenced to the engine shaft. Multiply by rTotalRatio for wheel torque; multiply by nEngine for driveshaft power |
ePowertrain |
- | Driveline efficiency — the factor between crank and driveshaft: engine or motor efficiency map times gearbox, final drive and bevel |
PPowertrain |
kW | Delivered power at the driveshafts, after driveline losses — the channel a driveshaft torquemeter is comparable with. Negative off-throttle, where it carries engine braking or regen |
Powertrain Control¶
| Channel | Unit | Description |
|---|---|---|
MPowertrain |
Nm | Delivered torque after driveline losses, referenced to the engine shaft. Multiply by rTotalRatio for wheel torque; multiply by nEngine for driveshaft power |
MPowertrainRequested |
Nm | Crank torque the engine had to make to deliver MPowertrain, i.e. MPowertrain divided by ePowertrain. Sits above MPowertrain by the driveline losses |
PPowertrain |
kW | Delivered power at the driveshafts, after driveline losses — the channel a driveshaft torquemeter is comparable with. Negative off-throttle, where it carries engine braking or regen |
PPowertrainRequested |
kW | Crank power needed to deliver PPowertrain, i.e. PPowertrain divided by ePowertrain. Sits above PPowertrain by the driveline losses, so it is not the channel to compare against a power limit |
PPowertrainLimit |
kW | Active driveshaft power limit: the available power, further reduced by an energy-budget cap when one is set |
PPowertrainLimitBop |
kW | Balance of Performance power limit — the regulation's driveshaft power cap, reported whether or not it binds. 0 when the car declares no max power. Compare against PPowertrain, not PPowertrainRequested |
EDriveTotal |
MJ | Cumulative propulsive wheel energy since lap start, masked to driving segments — this is what an energy budget is compared against, not the integral of PPowertrain |
BPushToPassActive |
- | Push-to-pass deployed (1 = boosted engine map active) |
tPushToPassTotal |
s | Cumulative push-to-pass deployment time since lap start |
FxPowertrainAvailableF |
N | Available front powertrain force |
FxPowertrainAvailableR |
N | Available rear powertrain force |
FzRL |
N | Vertical force on the rear left tyre |
FzRR |
N | Vertical force on the rear right tyre |
FzAeroFL |
N | Aerodynamic vertical force on the front left tyre |
FzAeroFR |
N | Aerodynamic vertical force on the front right tyre |
FzAeroRL |
N | Aerodynamic vertical force on the rear left tyre |
FzAeroRR |
N | Aerodynamic vertical force on the rear right tyre |
Tyre Geometry¶
| Channel | Unit | Description |
|---|---|---|
rTyreLoadedFL |
mm | Front left loaded tyre radius |
rTyreLoadedFR |
mm | Front right loaded tyre radius |
rTyreLoadedRL |
mm | Rear left loaded tyre radius |
rTyreLoadedRR |
mm | Rear right loaded tyre radius |
rTyreRollingFL |
mm | Front left tyre rolling radius |
rTyreRollingFR |
mm | Front right tyre rolling radius |
rTyreRollingRL |
mm | Rear left tyre rolling radius |
rTyreRollingRR |
mm | Rear right tyre rolling radius |
Aero¶
| Channel | Unit | Description |
|---|---|---|
FDrag |
N | Aerodynamic drag force |
FLift |
N | Aerodynamic lift force |
CDrag |
m² | Drag area SCx |
CLift |
m² | Lift area SCz |
rAeroBal |
% | Center of Pressure |
hRideF |
mm | Front ride height |
hRideR |
mm | Rear ride height |
FLiftF |
N | Aerodynamic lift force at the front axle |
FLiftR |
N | Aerodynamic lift force at the rear axle |
Suspension Engagement¶
| Channel | Unit | Description |
|---|---|---|
xWheelFL |
mm | Front left wheel displacement |
xWheelFR |
mm | Front right wheel displacement |
xWheelRL |
mm | Rear left wheel displacement |
xWheelRR |
mm | Rear right wheel displacement |
xBumpStopFL |
mm | Front left bump stop displacement |
xBumpStopFR |
mm | Front right bump stop displacement |
xBumpStopRL |
mm | Rear left bump stop displacement |
xBumpStopRR |
mm | Rear right bump stop displacement |
FBumpStopFL |
N | Front left bump stop force |
FBumpStopFR |
N | Front right bump stop force |
FBumpStopRL |
N | Rear left bump stop force |
FBumpStopRR |
N | Rear right bump stop force |
Suspension Springs¶
| Channel | Unit | Description |
|---|---|---|
FSpringFL |
N | Front left spring force |
FSpringFR |
N | Front right spring force |
FSpringRL |
N | Rear left spring force |
FSpringRR |
N | Rear right spring force |
xSpringFL |
mm | Front left spring displacement |
xSpringFR |
mm | Front right spring displacement |
xSpringRL |
mm | Rear left spring displacement |
xSpringRR |
mm | Rear right spring displacement |
KSpringFL |
N/mm | Front left spring rate |
KSpringFR |
N/mm | Front right spring rate |
KSpringRL |
N/mm | Rear left spring rate |
KSpringRR |
N/mm | Rear right spring rate |
Heave System¶
| Channel | Unit | Description |
|---|---|---|
xSuspF |
mm | Front suspension displacement |
xSuspR |
mm | Rear suspension displacement |
FHeaveSpringF |
N | Front heave spring force |
FHeaveSpringR |
N | Rear heave spring force |
FHeaveDamperF |
N | Front heave damper force |
FHeaveDamperR |
N | Rear heave damper force |
xHeaveSpringF |
mm | Front heave spring displacement |
xHeaveSpringR |
mm | Rear heave spring displacement |
xHeaveDamperF |
mm | Front heave damper displacement |
xHeaveDamperR |
mm | Rear heave damper displacement |
KHeaveSpringF |
N/mm | Front heave spring rate |
KHeaveSpringR |
N/mm | Rear heave spring rate |
KHeaveDamperF |
N/mm | Front heave damper stiffness |
KHeaveDamperR |
N/mm | Rear heave damper stiffness |
Anti Roll Bars¶
| Channel | Unit | Description |
|---|---|---|
MARBF |
Nm | Front anti-roll bar moment |
MARBR |
Nm | Rear anti-roll bar moment |
SARBF |
Nm/rad | Front anti-roll bar stiffness |
SARBR |
Nm/rad | Rear anti-roll bar stiffness |
aARBF |
degrees | Front anti-roll bar angle |
aARBR |
degrees | Rear anti-roll bar angle |
rRollStiffness |
% | Roll stiffness distribution |
Ride Height¶
| Channel | Unit | Description |
|---|---|---|
hRideF |
mm | Front ride height |
hRideR |
mm | Rear ride height |
xRideHeightDeltaFL |
mm | Front left ride height delta |
xRideHeightDeltaFR |
mm | Front right ride height delta |
xRideHeightDeltaRL |
mm | Rear left ride height delta |
xRideHeightDeltaRR |
mm | Rear right ride height delta |
aRollTotal |
degrees | Total vehicle roll angle |
aPitch |
degrees | Vehicle pitch angle |
Kinematics¶
| Channel | Unit | Description |
|---|---|---|
hRollCentreF |
mm | Front roll centre height |
hRollCentreR |
mm | Rear roll centre height |
aCamberFL |
degrees | Front left camber angle |
aCamberFR |
degrees | Front right camber angle |
aCamberRL |
degrees | Rear left camber angle |
aCamberRR |
degrees | Rear right camber angle |
aToeFL |
degrees | Front left toe angle, static plus kinematic. Steer excluded, see aWheelFL |
aToeFR |
degrees | Front right toe angle, static plus kinematic. Steer excluded, see aWheelFR |
aToeRL |
degrees | Rear left toe angle, static plus kinematic |
aToeRR |
degrees | Rear right toe angle, static plus kinematic |
aCamberComplianceFL |
degrees | Front left camber deflection from hub compliance under tyre load, the force-driven part of aCamberFL. Positive is top-out (camber loss). Zero on a rigid hub |
aCamberComplianceFR |
degrees | Front right camber deflection from hub compliance under tyre load, the force-driven part of aCamberFR. Positive is top-out (camber loss). Zero on a rigid hub |
aCamberComplianceRL |
degrees | Rear left camber deflection from hub compliance under tyre load, the force-driven part of aCamberRL. Positive is top-out (camber loss). Zero on a rigid hub |
aCamberComplianceRR |
degrees | Rear right camber deflection from hub compliance under tyre load, the force-driven part of aCamberRR. Positive is top-out (camber loss). Zero on a rigid hub |
aToeComplianceFL |
degrees | Front left toe deflection from hub compliance under tyre load, the force-driven part of aToeFL. Positive is toe-in. Zero on a rigid hub |
aToeComplianceFR |
degrees | Front right toe deflection from hub compliance under tyre load, the force-driven part of aToeFR. Positive is toe-in. Zero on a rigid hub |
aToeComplianceRL |
degrees | Rear left toe deflection from hub compliance under tyre load, the force-driven part of aToeRL. Positive is toe-in. Zero on a rigid hub |
aToeComplianceRR |
degrees | Rear right toe deflection from hub compliance under tyre load, the force-driven part of aToeRR. Positive is toe-in. Zero on a rigid hub |
rAntiDive |
% | Anti-dive ratio |
rAntiSquat |
% | Anti-squat ratio |
rAntiLiftF |
% | Front anti-lift ratio |
rAntiLiftR |
% | Rear anti-lift ratio |
Mass Properties¶
| Channel | Unit | Description |
|---|---|---|
lWheelbase |
m | Vehicle wheelbase |
lTrackF |
m | Front track width |
lTrackR |
m | Rear track width |
hCog |
m | Center of gravity height |
maSpringFL |
- | Front-left spring motion ratio |
maSpringFR |
- | Front-right spring motion ratio |
maSpringRL |
- | Rear-left spring motion ratio |
maSpringRR |
- | Rear-right spring motion ratio |
maDamperFL |
- | Front-left damper motion ratio |
maDamperFR |
- | Front-right damper motion ratio |
maDamperRL |
- | Rear-left damper motion ratio |
maDamperRR |
- | Rear-right damper motion ratio |
Battery¶
| Channel | Unit | Description |
|---|---|---|
VBattery |
V | Battery voltage |
rSoc |
- | State of Charge of the battery |
IDraw |
A | Current drawn from the battery |
RInternal |
ohm | Internal resistance of the battery |
ECapacity |
kWh | Energy capacity of the battery |
QCellDischarge |
Ah | Discharge from the battery cell |
VCell |
V | Voltage of the battery cell |
Cornering Dynamics¶
| Channel | Unit | Description |
|---|---|---|
nYaw |
degrees/s | Yaw rate |
MYaw |
Nm | Yaw moment |
cRaceLine |
1/m | Corner curvature |
rRaceLine |
m | Corner radius |
aHeading |
degrees | Vehicle heading angle |
Braking¶
| Channel | Unit | Description |
|---|---|---|
pBrakeF |
bar | Brake pressure at the front axle |
pBrakeR |
bar | Brake pressure at the rear axle |
pBrakeTotal |
bar | Total brake pressure |
MBrake |
Nm | Total brake torque |
rBrakeBal |
% | Brake balance ratio |
Track Position¶
| Channel | Unit | Description |
|---|---|---|
xCar |
m | Vehicle X position |
yCar |
m | Vehicle Y position |
xTrackBoundL |
m | Track left boundary X position |
xTrackBoundR |
m | Track right boundary X position |
yTrackBoundL |
m | Track left boundary Y position |
yTrackBoundR |
m | Track right boundary Y position |
sRun |
m | Distance covered on the track |
tRun |
s | Elapsed time |
NLap |
- | Lap number |
NSector |
- | Current sector number |
tSector |
s | Sector times |
Vehicle Balance¶
| Channel | Unit | Description |
|---|---|---|
rTorqueBal |
% | Torque balance ratio |
rMechBal |
% | Mechanical balance ratio |
rBrakeBal |
% | Brake balance ratio |
rRollStiffness |
% | Roll stiffness distribution |
rAeroBal |
% | Center of Pressure |
Track Conditions¶
| Channel | Unit | Description |
|---|---|---|
rGrip |
- | Grip level |
FSlopeResistance |
N | Resistance force due to slope |
FBanking |
N | Banking force |
cRaceLine |
1/m | Corner curvature |
Grip Usage¶
| Channel | Unit | Description |
|---|---|---|
rGripTyreFL |
- | Fraction of the available grip at this tyre in use — combined longitudinal and lateral demand against the peak force at its own vertical load, camber and pressure. 1.0 is saturation; above 1.0 the lap asked for more than the model says the tyre had. Blank where the tyre is unloaded and the fraction is undefined. QSS and replay only. |
rGripTyreFR |
- | Fraction of the available grip at this tyre in use — combined longitudinal and lateral demand against the peak force at its own vertical load, camber and pressure. 1.0 is saturation; above 1.0 the lap asked for more than the model says the tyre had. Blank where the tyre is unloaded and the fraction is undefined. QSS and replay only. |
rGripTyreRL |
- | Fraction of the available grip at this tyre in use — combined longitudinal and lateral demand against the peak force at its own vertical load, camber and pressure. 1.0 is saturation; above 1.0 the lap asked for more than the model says the tyre had. Blank where the tyre is unloaded and the fraction is undefined. QSS and replay only. |
rGripTyreRR |
- | Fraction of the available grip at this tyre in use — combined longitudinal and lateral demand against the peak force at its own vertical load, camber and pressure. 1.0 is saturation; above 1.0 the lap asked for more than the model says the tyre had. Blank where the tyre is unloaded and the fraction is undefined. QSS and replay only. |
gLat |
m/s² | Lateral acceleration |
gLong |
m/s² | Longitudinal acceleration |
vCar |
km/h | Vehicle speed |
cRaceLine |
1/m | Corner curvature |
Basic¶
| Channel | Unit | Description |
|---|---|---|
vCar |
km/h | Vehicle speed |
gLat |
m/s² | Lateral acceleration |
gLong |
m/s² | Longitudinal acceleration |
aSteerNeutral |
degrees | Neutral steering angle |
tRun |
s | Elapsed time |
cRaceLine |
1/m | Corner curvature |
Overview¶
| Channel | Unit | Description |
|---|---|---|
vCar |
km/h | Vehicle speed |
NGear |
- | Selected gear |
gLat |
m/s² | Lateral acceleration |
gLong |
m/s² | Longitudinal acceleration |
aSteerNeutral |
degrees | Neutral steering angle |
hRideF |
mm | Front ride height |
hRideR |
mm | Rear ride height |
FDrag |
N | Aerodynamic drag force |
FLift |
N | Aerodynamic lift force |
Other Channels¶
| Channel | Unit | Description |
|---|---|---|
BInShift |
- | In shift indicator |
BTyreOverRangeFL |
- | 1 where the requested longitudinal force exceeded what this tyre could make, so Fx holds the achievable peak instead of the request. Fx and rSlipTyre still agree with each other there, but no longer sum to m x gLong. |
BTyreOverRangeFR |
- | 1 where the requested longitudinal force exceeded what this tyre could make, so Fx holds the achievable peak instead of the request. Fx and rSlipTyre still agree with each other there, but no longer sum to m x gLong. |
BTyreOverRangeRL |
- | 1 where the requested longitudinal force exceeded what this tyre could make, so Fx holds the achievable peak instead of the request. Fx and rSlipTyre still agree with each other there, but no longer sum to m x gLong. |
BTyreOverRangeRR |
- | 1 where the requested longitudinal force exceeded what this tyre could make, so Fx holds the achievable peak instead of the request. Fx and rSlipTyre still agree with each other there, but no longer sum to m x gLong. |
CLiftF |
m² | Front axle lift area SCz |
CLiftR |
m² | Rear axle lift area SCz |
DAir |
kg/m³ | Air density |
ELatTyreFL |
MJ | Front left tyre lateral energy |
ELatTyreFR |
MJ | Front right tyre lateral energy |
ELatTyreRL |
MJ | Rear left tyre lateral energy |
ELatTyreRR |
MJ | Rear right tyre lateral energy |
ELongTyreFL |
MJ | Front left tyre longitudinal energy |
ELongTyreFR |
MJ | Front right tyre longitudinal energy |
ELongTyreRL |
MJ | Rear left tyre longitudinal energy |
ELongTyreRR |
MJ | Rear right tyre longitudinal energy |
ETyreFL |
MJ | Front left tyre total energy |
ETyreFR |
MJ | Front right tyre total energy |
ETyreRL |
MJ | Rear left tyre total energy |
ETyreRR |
MJ | Rear right tyre total energy |
FDamperFL |
N | Front left damper force |
FDamperFR |
N | Front right damper force |
FDamperRL |
N | Rear left damper force |
FDamperRR |
N | Rear right damper force |
FHeaveBumpStopF |
N | Front heave bump stop force |
FHeaveBumpStopR |
N | Rear heave bump stop force |
FLiftSprungF |
N | Front axle aerodynamic lift carried by the chassis, so routed through the suspension |
FLiftSprungR |
N | Rear axle aerodynamic lift carried by the chassis, so routed through the suspension |
FLiftUnsprungF |
N | Front axle aerodynamic lift carried by the hub, bypassing the suspension |
FLiftUnsprungR |
N | Rear axle aerodynamic lift carried by the hub, bypassing the suspension |
FResistanceTotal |
N | Total resistance force |
FxFL |
N | Longitudinal force on the front left tyre |
FxFR |
N | Longitudinal force on the front right tyre |
FxPowertrainBrake |
N | Powertrain brake force |
FxRL |
N | Longitudinal force on the rear left tyre |
FxRR |
N | Longitudinal force on the rear right tyre |
FxTyreFL |
N | Front left tyre longitudinal force |
FxTyreFR |
N | Front right tyre longitudinal force |
FxTyreRL |
N | Rear left tyre longitudinal force |
FxTyreRR |
N | Rear right tyre longitudinal force |
FyFL |
N | Lateral force on the front left tyre |
FyFR |
N | Lateral force on the front right tyre |
FyRL |
N | Lateral force on the rear left tyre |
FyRR |
N | Lateral force on the rear right tyre |
FyTyreFL |
N | Front left tyre lateral force |
FyTyreFR |
N | Front right tyre lateral force |
FyTyreRL |
N | Rear left tyre lateral force |
FyTyreRR |
N | Rear right tyre lateral force |
FzFL |
N | Vertical force on the front left tyre |
FzFR |
N | Vertical force on the front right tyre |
FzSuspF |
N | Front suspension vertical force |
FzSuspFTotal |
N | Total front suspension vertical force |
FzSuspR |
N | Rear suspension vertical force |
FzSuspRTotal |
N | Total rear suspension vertical force |
FzTyreFL |
N | Front left tyre vertical force |
FzTyreFR |
N | Front right tyre vertical force |
FzTyreRL |
N | Rear left tyre vertical force |
FzTyreRR |
N | Rear right tyre vertical force |
KBumpStopFL |
N/mm | Front left bump stop rate |
KBumpStopFR |
N/mm | Front right bump stop rate |
KBumpStopRL |
N/mm | Rear left bump stop rate |
KBumpStopRR |
N/mm | Rear right bump stop rate |
KHeaveBumpStopF |
N/mm | Front heave bump stop stiffness |
KHeaveBumpStopR |
N/mm | Rear heave bump stop stiffness |
KHeaveF |
N/mm | Front suspension heave stiffness measured at the wheel |
KHeaveR |
N/mm | Rear suspension heave stiffness measured at the wheel |
KTyreFL |
N/mm | Front left tyre stiffness |
KTyreFR |
N/mm | Front right tyre stiffness |
KTyreRL |
N/mm | Rear left tyre stiffness |
KTyreRR |
N/mm | Rear right tyre stiffness |
KWheelFL |
N/mm | Front left wheel rate |
KWheelFR |
N/mm | Front right wheel rate |
KWheelRL |
N/mm | Rear left wheel rate |
KWheelRR |
N/mm | Rear right wheel rate |
MBrakeF |
Nm | Front brake torque |
MBrakeR |
Nm | Rear brake torque |
MPowertrainAvailable |
Nm | MPowertrain at full throttle, whether or not the lap used it |
MPowertrainBrake |
Nm | Powertrain brake torque |
MPowertrainF |
Nm | Front powertrain torque |
MPowertrainFRequested |
Nm | Requested front powertrain torque |
MPowertrainR |
Nm | Rear powertrain torque |
MPowertrainRRequested |
Nm | Requested rear powertrain torque |
MSpringFL |
Nm | Front left spring torque |
MSpringFR |
Nm | Front right spring torque |
MSpringRL |
Nm | Rear left spring torque |
MSpringRR |
Nm | Rear right spring torque |
MzFL |
Nm | Front left aligning moment |
MzFR |
Nm | Front right aligning moment |
MzRL |
Nm | Rear left aligning moment |
MzRR |
Nm | Rear right aligning moment |
MzTyreFL |
Nm | Front left tyre aligning moment |
MzTyreFR |
Nm | Front right tyre aligning moment |
MzTyreRL |
Nm | Rear left tyre aligning moment |
MzTyreRR |
Nm | Rear right tyre aligning moment |
PPowertrainAvailable |
kW | PPowertrain at full throttle, whether or not the lap used it |
PPowertrainF |
kW | Front powertrain power |
PPowertrainFRequested |
kW | Requested front powertrain power |
PPowertrainR |
kW | Rear powertrain power |
PPowertrainRRequested |
kW | Requested rear powertrain power |
SRollF |
Nm/rad | Front roll stiffness |
SRollR |
Nm/rad | Rear roll stiffness |
SRollTotal |
Nm/rad | Total roll stiffness |
SSpringFL |
Nm/rad | Front left spring angular stiffness |
SSpringFR |
Nm/rad | Front right spring angular stiffness |
SSpringRL |
Nm/rad | Rear left spring angular stiffness |
SSpringRR |
Nm/rad | Rear right spring angular stiffness |
TAir |
degC | Ambient air temperature |
aAckermannF |
degrees | Front Ackermann angle |
aAckermannR |
degrees | Rear Ackermann angle |
aAeroYaw |
degrees | Aero yaw angle |
aCasterFL |
degrees | Front left caster angle |
aCasterFR |
degrees | Front right caster angle |
aCasterRL |
degrees | Rear left caster angle |
aCasterRR |
degrees | Rear right caster angle |
aInstCentreAngleCPF |
degrees | Front instant centre angle (contact patch) |
aInstCentreAngleCPR |
degrees | Rear instant centre angle (contact patch) |
aInstCentreAngleWCPF |
degrees | Front instant centre angle (wheel centre plane) |
aInstCentreAngleWCPR |
degrees | Rear instant centre angle (wheel centre plane) |
aKPIFL |
degrees | Front left king pin inclination |
aKPIFR |
degrees | Front right king pin inclination |
aKPIRL |
degrees | Rear left king pin inclination |
aKPIRR |
degrees | Rear right king pin inclination |
aRockerFL |
degrees | Front left rocker angle |
aRockerFLTotal |
degrees | Front left total rocker angle |
aRockerFR |
degrees | Front right rocker angle |
aRockerFRTotal |
degrees | Front right total rocker angle |
aRockerRL |
degrees | Rear left rocker angle |
aRockerRLTotal |
degrees | Rear left total rocker angle |
aRockerRR |
degrees | Rear right rocker angle |
aRockerRRTotal |
degrees | Rear right total rocker angle |
aRollSprung |
degrees | Sprung mass roll angle |
aRollUnsprung |
degrees | Unsprung mass roll angle |
aSlipTyreFL |
degrees | Front left tyre slip angle |
aSlipTyreFR |
degrees | Front right tyre slip angle |
aSlipTyreRL |
degrees | Rear left tyre slip angle |
aSlipTyreRR |
degrees | Rear right tyre slip angle |
aSteer |
degrees | Road wheel steer angle, shared by both front wheels. Driver side is aSteerWheel |
aSteerWheel |
degrees | Steering wheel angle at the driver. Road wheel side is aSteer |
aWheelFL |
degrees | Front left wheel angle: aSteer plus toe (static and kinematic) |
aWheelFR |
degrees | Front right wheel angle: aSteer plus toe (static and kinematic) |
aWheelRL |
degrees | Rear left wheel angle: toe only (static and kinematic) |
aWheelRR |
degrees | Rear right wheel angle: toe only (static and kinematic) |
aWindDirection |
degrees | Wind direction (0 = +X axis, CCW positive) |
cVirtual |
1/m | Virtual curvature |
ePowertrainF |
- | Front powertrain efficiency |
ePowertrainR |
- | Rear powertrain efficiency |
gLongSegment |
m/s² | Per-segment mean longitudinal acceleration — the same value QSS reports as gLong |
hRollCentreFL |
mm | Front left roll centre height |
hRollCentreFR |
mm | Front right roll centre height |
hRollCentreRL |
mm | Rear left roll centre height |
hRollCentreRR |
mm | Rear right roll centre height |
lHalftrackMigrationFL |
mm | Front left half-track migration |
lHalftrackMigrationFR |
mm | Front right half-track migration |
lHalftrackMigrationRL |
mm | Rear left half-track migration |
lHalftrackMigrationRR |
mm | Rear right half-track migration |
lWheelbaseMigrationF |
mm | Front wheelbase migration |
lWheelbaseMigrationR |
mm | Rear wheelbase migration |
maARBF |
- | Front anti-roll bar motion ratio |
maARBR |
- | Rear anti-roll bar motion ratio |
maBumpStopFL |
- | Front-left bump stop motion ratio |
maBumpStopFR |
- | Front-right bump stop motion ratio |
maBumpStopRL |
- | Rear-left bump stop motion ratio |
maBumpStopRR |
- | Rear-right bump stop motion ratio |
maHeaveBumpStopF |
- | Front heave bump stop motion ratio |
maHeaveBumpStopR |
- | Rear heave bump stop motion ratio |
maHeaveSpringF |
- | Front heave spring motion ratio |
maHeaveSpringR |
- | Rear heave spring motion ratio |
nWheelFL |
rad/s | Front left wheel angular speed |
nWheelFR |
rad/s | Front right wheel angular speed |
nWheelRL |
rad/s | Rear left wheel angular speed |
nWheelRR |
rad/s | Rear right wheel angular speed |
pAir |
Pa | Ambient air pressure |
rAckermannF |
- | Front axle Ackermann fraction: achieved steer difference as a fraction of true Ackermann. Carries no information at small steer angles, where the difference vanishes |
rGripAmbient |
- | Ambient grip level |
rHumidity |
% | Relative humidity |
rPowerSaturationF |
- | Front power saturation ratio |
rPowerSaturationR |
- | Rear power saturation ratio |
rSlipTyreFL |
- | Front left tyre slip ratio |
rSlipTyreFR |
- | Front right tyre slip ratio |
rSlipTyreRL |
- | Rear left tyre slip ratio |
rSlipTyreRR |
- | Rear right tyre slip ratio |
rTotalRatio |
- | Total powertrain ratio |
tDelta |
s | Time step |
time_delta |
s | Time delta between results |
vPitot |
m/s | Effective airspeed at vehicle |
vWheelFL |
km/h | Front left wheel velocity |
vWheelFR |
km/h | Front right wheel velocity |
vWheelRL |
km/h | Rear left wheel velocity |
vWheelRR |
km/h | Rear right wheel velocity |
vWind |
m/s | Wind speed magnitude |
vWindX |
m/s | Wind velocity X component |
vWindY |
m/s | Wind velocity Y component |
vyCar |
km/h | Vehicle lateral velocity |
xDamperFL |
mm | Front left damper displacement |
xDamperFLTotal |
mm | Front left total damper displacement |
xDamperFR |
mm | Front right damper displacement |
xDamperFRTotal |
mm | Front right total damper displacement |
xDamperRL |
mm | Rear left damper displacement |
xDamperRLTotal |
mm | Rear left total damper displacement |
xDamperRR |
mm | Rear right damper displacement |
xDamperRRTotal |
mm | Rear right total damper displacement |
xHeaveBumpStopF |
mm | Front heave bump stop displacement |
xHeaveBumpStopR |
mm | Rear heave bump stop displacement |
xRideHeightDeltaF |
mm | Front ride height delta |
xRideHeightDeltaR |
mm | Rear ride height delta |
xSpringFLTotal |
mm | Front left total spring displacement |
xSpringFRTotal |
mm | Front right total spring displacement |
xSpringRLTotal |
mm | Rear left total spring displacement |
xSpringRRTotal |
mm | Rear right total spring displacement |
xSteerRack |
mm | Steering rack displacement, zero at straight ahead |
xSuspFL |
mm | Front left suspension displacement |
xSuspFLTotal |
mm | Front left total suspension displacement |
xSuspFR |
mm | Front right suspension displacement |
xSuspFRTotal |
mm | Front right total suspension displacement |
xSuspFTotal |
mm | Total front suspension displacement |
xSuspRL |
mm | Rear left suspension displacement |
xSuspRLTotal |
mm | Rear left total suspension displacement |
xSuspRR |
mm | Rear right suspension displacement |
xSuspRRTotal |
mm | Rear right total suspension displacement |
xSuspRTotal |
mm | Total rear suspension displacement |
xTrackCentre |
m | Track centre X position |
xTrackReference |
m | Reference line X position |
xTyreFL |
mm | Front left tyre displacement |
xTyreFR |
mm | Front right tyre displacement |
xTyreRL |
mm | Rear left tyre displacement |
xTyreRR |
mm | Rear right tyre displacement |
yTrackCentre |
m | Track centre Y position |
yTrackReference |
m | Reference line Y position |
Metrics¶
The Metrics table and sweep results draw from 683 summary statistics — mostly a base trace channel with a suffix describing how it was reduced over the lap. Rather than list all of them (most are mechanical repeats of the same handful of suffixes across every channel), here is the naming convention:
| Suffix | Meaning (from example) | Count | Example |
|---|---|---|---|
Max |
Maximum front left camber | 63 | aCamberFLMax (from aCamberFL) |
Average |
Mean front left camber | 59 | aCamberFLAverage (from aCamberFL) |
Min |
Minimum front left camber | 58 | aCamberFLMin (from aCamberFL) |
Std |
Standard deviation of front left camber | 31 | aCamberFLStd (from aCamberFL) |
AbsAverage |
Mean absolute front left camber | 24 | aCamberFLAbsAverage (from aCamberFL) |
AbsMax |
Peak absolute front left camber | 23 | aCamberFLAbsMax (from aCamberFL) |
Total |
Total front left tyre lateral energy | 15 | ELatTyreFLTotal (from ELatTyreFL) |
Rms |
RMS front left tyre slip angle | 12 | aSlipTyreFLRms (from aSlipTyreFL) |
Atv10Average |
Mean drag area SCx at 10 m/s (36 km/h) | 10 | CDragAtv10Average (from CDrag) |
Atv20Average |
Mean drag area SCx at 20 m/s (72 km/h) | 10 | CDragAtv20Average (from CDrag) |
Atv30Average |
Mean drag area SCx at 30 m/s (108 km/h) | 10 | CDragAtv30Average (from CDrag) |
Atv40Average |
Mean drag area SCx at 40 m/s (144 km/h) | 10 | CDragAtv40Average (from CDrag) |
Atv50Average |
Mean drag area SCx at 50 m/s (180 km/h) | 10 | CDragAtv50Average (from CDrag) |
Atv60Average |
Mean drag area SCx at 60 m/s (216 km/h) | 10 | CDragAtv60Average (from CDrag) |
Atv70Average |
Mean drag area SCx at 70 m/s (252 km/h) | 10 | CDragAtv70Average (from CDrag) |
Atv80Average |
Mean drag area SCx at 80 m/s (288 km/h) | 10 | CDragAtv80Average (from CDrag) |
Atv90Average |
Mean drag area SCx at 90 m/s (324 km/h) | 10 | CDragAtv90Average (from CDrag) |
HighLatAccAbsMax |
Peak absolute front left camber under high lateral acceleration | 4 | aCamberFLHighLatAccAbsMax (from aCamberFL) |
HighLatAccAverage |
Mean front left camber under high lateral acceleration | 4 | aCamberFLHighLatAccAverage (from aCamberFL) |
Range |
Range of front left damper displacement | 4 | xDamperFLRange (from xDamperFL) |
Delta |
Change in battery state of charge | 3 | rSocDelta (from rSoc) |
58 narrower one-off metrics not listed individually
Mostly speed-bucketed aero lookups (e.g. FDragAtv40 — drag at 40 m/s), per-gear engine speed stats (nEngineInGear3Max), and per-sector splits (rGripSector2Average) — same Base + Qualifier naming pattern, just narrower. Search for a specific one by name in the Metrics table's channel picker.
235 metrics don't map cleanly to a suffix pattern
These are standalone metrics (like lap time or sector splits) rather than a per-channel reduction — see the Metrics page.
Related Topics¶
- Trace View — Plot channels against distance, time, or speed
- Metrics — Summary statistics table and sweep results
- Math Channels — Build custom channels referencing these
- Data Types — How units and value types work