Cars – Aerodynamics

New HEADLIGHTS input for aero controller

Example:

[DYNAMIC_CONTROLLER_0]
WING=1
COMBINATOR=ADD ; or MULT, same as any other controller
INPUT=HEADLIGHTS
LUT=controller.lut ; 0 is off, 1 is on
FILTER=0.5
UP_LIMIT=90
DOWN_LIMIT=0

New option to use inline LUTs in aero.ini

Full aero map implementation (2D lookup table and many features)

Example implementation:

aero.ini

• note: at least one [WING] element is still required for AC to load

[MAP_0]
NAME = name    
MAP_CL_RH = filename.2Dlut    ;cl*area versus meters (ride heights at each axle)    
MAP_CD_RH = filename.2Dlut    ;cd*area versus meters (ride heights at each axle)    
MAP_BALANCE_RH = filename.2Dlut    ;ratio of front:rear cl*area versus meters (ride heights at each axle)
MAP_YAW_CL = filename.lut    ;degrees|multiplier
MAP_YAW_CD = filename.lut    ;degrees|multiplier
MAP_YAW_BALANCE = filename.lut    ;degrees|addition
MAP_ROLL_CL = filename.lut    ;degrees|multiplier
MAP_ROLL_CD = filename.lut    ;degrees|multiplier
MAP_ROLL_BALANCE = filename.lut    ;degrees|addition
MAP_STEER_CL = filename.lut    ;degrees (average at wheels)|multiplier
MAP_STEER_CD = filename.lut    ;degrees (average at wheels)|multiplier
MAP_STEER_BALANCE = filename.lut    ;degrees (average at wheels)|addition
MAP_SPEED_CL = filename.lut    ;kph|multiplier
MAP_SPEED_CD = filename.lut    ;kph|multiplier
MAP_SPEED_BALANCE = filename.lut    ;kph|addition
FRONT_RH_OFFSET = 0.00 ;meters (static ride height offset - it adds to the ride height input that's sent to the 2D-LUT lookup)    
REAR_RH_OFFSET = 0.00 ;same as above    
CL_MULT = 1.00
CD_MULT = 1.00
BALANCE_OFFSET = 0.00    ;%/100    
INTERPOLATION = LINEAR          ; LINEAR, CUBIC
DRAG_OFFSET = 0.00, 0.00    ;meters, meters - left/right, up/down
FRONT_FORCE_DELAY=0.05    ;delay for forces at the front of the car - higher numbers mean less lag
REAR_FORCE_DELAY=0.04    ;delay for forces at the rear of the car - higher numbers mean less lag
DRAG_FORCE_DELAY=0.045    ;delay for drag forces - higher numbers mean less lag

2D LUT example (x-axis is front ride height, y-axis is rear - axis values must ascend as you move right and down):

    0.015    0.020    0.025    
0.020    1    1    1    
0.025    1    1    1    
0.030    1    1    1    
0.035    1    1    1    
0.040    1    1    1

Tab/space-separated for ease of import from spreadsheet software (e.g. MS Excel). It is recommended that you build the table in Excel and copy and paste it into your 2DLUT file.

Aero fan implementation (e.g. Chaparral 2J)

Example implementation:

aero.ini

[FAN_0]    
NAME=Name    
MAP_FORCE_RH=filename.2Dlut          ; meters (ride heights at each axle) vs. force produced    
MAP_BALANCE_RH=filename.2Dlut         ; meters (ride heights at each axle) vs. front balance (%/100)    
MAP_SPEED_FORCE=filename.lut         ; kph|force_multiplier    
MAP_SPEED_BALANCE=filename.lut          ; kph|balance_offset    
FRONT_RH_OFFSET=0.000          ; meters (static ride height offset)    
REAR_RH_OFFSET=0.000        ; meters (static ride height offset)    
FORCE_MULT=1.00
BALANCE_OFFSET=0.00         ; %/100    
INTERPOLATION=LINEAR          ; LINEAR, CUBIC

Aero map setup adjustments

Example implementation:

setup.ini

[AEROMAP]
SHOW_CLICKS=0
TAB=AERO
NAME=Aero Configuration ; the setup option's title
LUT=aero_map_setup.lut ; format: display_name|aeromap_index
DEFAULT=0 ; the default index of map (others contained in the LUT will be switched off unless selected in the setup window)
POS_X=0.5
POS_Y=9
HELP=NULL ; vanilla AC options only, for now.