I am using the Cherokee 180 for training in a real life archer III and so far it is awesome. I was snooping around the aircraft.cfg file in simobjects/airplanes/a2a_piper... and noticed a bunch of performance variables in the file. Is it possible to change some of these to make the aircraft behave even more like an archer III?
Some of them seem pretty straight forward like the reference speeds but others seem less decode-able like the cg positions. Is anything going to go completely wrong if i change these values and does anyone have an idea of how to figure out some of the harder ones or where to start?
These are the performance characteristics I'm trying to recreate:
Vne:154
Vno: 125
Va: 89@1634 - 113@2550
Vfe 102
Vs1: 50
Vs0: 45
Vg: 76
Vref: 66
These are the aircraft.cfg lines i think might be relevant:
Code: Select all
[WEIGHT_AND_BALANCE]
max_gross_weight = 2400 // (pounds)
empty_weight = 1340 // (pounds)
reference_datum_position = 0, 0, 0 // (feet) distance from FlightSim Reference position: (1/4 chord, centerline, waterline)
empty_weight_CG_position = 1.2, 0, 0 // (feet) longitudinal, lateral, vertical distance from specified datum
max_number_of_stations = 20
station_load.0 = 0.00, 0.9, -0.1, -0.31 // Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)
station_load.1 = 0.00, 0.9, 0.1, -0.31 // Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)
station_load.2 = 0.00, -1.7, -0.1, -0.31 // Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)
station_load.3 = 0.00, -1.7, 0.1, -0.31 // Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)
station_load.4 = 0.00, -3.3, 0.00, 0.0 // Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)
;Moments of Inertia
empty_weight_pitch_MOI = 1290 //400 //4149
empty_weight_roll_MOI = 1250 //3099
empty_weight_yaw_MOI = 3400 //6840
empty_weight_coupled_MOI = 0
[flaps.0] //Trailing Edge Flaps
type= 1 //0=Fuel Injected, 1=Gravity Carburetor, 2=Aerobatic Carburetor
system_type=0 //0=Electric, 1=Hydraulic, 2=Pneumatic, 3=Manual, 4=None
span-outboard= 0.0 // 0.0 .. 1.0
extending-time= 999 // seconds
damaging-speed=120.0 // KIAS
blowout-speed=150.0 // KIAS
flaps-position.0=0.00 // degrees
flaps-position.1=12.70 // degrees
flaps-position.2=25.30 // degrees
flaps-position.3=38.00 // degrees
lift_scalar=1
drag_scalar=0
pitch_scalar=0
[Flaps.1]
type= 2
span-outboard= 1
extending-time= 999
system_type= 3
damaging-speed= 999
blowout-speed= 999
lift_scalar= -60
drag_scalar= 200
pitch_scalar= 0
flaps-position.0= 0
flaps-position.1= 0.0001
flaps-position.2= 0.0002
flaps-position.3= 0.0003
flaps-position.4= 0.0004
flaps-position.5= 0.0005
flaps-position.6= 0.0006
flaps-position.7= 0.0007
flaps-position.8= 0.0008
flaps-position.9= 40
[airplane_geometry]
wing_area = 160.0 //Square feet
wing_span = 30.0 //Feet
wing_root_chord = 5.45 //Feet
wing_dihedral = 7.2 //Degrees
wing_incidence = 2.0 //Degrees
wing_twist = -2.0 //Degrees
oswald_efficiency_factor= 0.80 //Measure of lift effeciency of wing
wing_winglets_flag = 0 //Are winglets available?
wing_sweep = 0.0 //Degrees, wing leading edge
wing_pos_apex_lon = 2.0 //Feet, longitudinal distance from reference point, negative going aft
wing_pos_apex_vert = -1 //Feet, vertical distance from reference point, positive going up
htail_area = 27.0 //Square feet
htail_span = 10.8 //Feet
htail_pos_lon = -12.8 //Feet, longitudinal distance from reference point, negative going aft
htail_pos_vert = 0.4 //Feet, vertical distance from reference point, positive going up
htail_incidence = 3.2 //Degrees
htail_sweep = 0.0 //Degrees, horizontal tail leading edge
vtail_area = 11.0 //Square feet
vtail_span = 3.8 //Feet, tip to body
vtail_sweep = 40.0 //Degrees, vertical tail leading edge
vtail_pos_lon = -13.2 //Feet, longitudinal distance from reference point, negative going aft
vtail_pos_vert = 5.1 //Feet, vertical distance from reference point, positive going up
elevator_area = 24.4 //Square feet
aileron_area = 10.6 //Square feet
rudder_area = 4.9 //Square feet
elevator_up_limit = 28.0 //Degrees
elevator_down_limit = 21.0 //Degrees
aileron_up_limit = 20.0 //Degrees
aileron_down_limit = 15.0 //Degrees
rudder_limit = 24.0 //Degrees
elevator_trim_limit = 100 //19.50000 //Degrees
spoiler_limit = 100 //Degrees
spoilerons_available = 0 //Spoilerons Available?
aileron_to_spoileron_gain = 0 //Aileron to spoileron gain
min_ailerons_for_spoilerons = 0 //Degrees
min_flaps_for_spoilerons = 0 //Minimum flap handle position when spoilerons activate
auto_spoiler_available = 0
positive_g_limit_flaps_up = 6.0 //Design G load tolerance (positive, flaps up)
positive_g_limit_flaps_down= 6.0 //Design G load tolerance (positive, flaps down)
negative_g_limit_flaps_up = -2.5 //Design G load tolerance (negative, flaps up)
negative_g_limit_flaps_down= -2.5 //Design G load tolerance (negative, flaps down)
load_safety_factor = 1.5 //Design G load safety factor
spoiler_extension_time = 1
spoiler_handle_available = 1
[Reference Speeds]
flaps_up_stall_speed = 61.0 //Knots True (KTAS)
full_flaps_stall_speed = 50.0 //Knots True (KTAS)
cruise_speed = 124.0 //Knots True (KTAS)
max_indicated_speed = 148 //Red line (KIAS)
