ardupilot/Tools/Frame_params/QuadPlanes/Foxtech_Altair370.parm

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# this is a dual-canard IC quadplane Altair 370
# https://www.foxtechfpv.com/foxtech-altair-370-tandem-wing-hybrid-vtol.html
# the dual canard design is setup with the front two canards setup as elevons
# with MIXING_OFFSET used to give 75% elevator control and 25% roll control
# the rear two elevons are setup for roll only (ailerons)
# setup airspeed range
ARSPD_FBW_MAX 35
ARSPD_FBW_MIN 22
TRIM_ARSPD_CM 2700
# fixed wing limits
LIM_PITCH_MAX 1500
LIM_PITCH_MIN -1500
LIM_ROLL_CD 2500
# setup elevons as 75% elevator and 25% aileron
MIXING_GAIN 0.25
MIXING_OFFSET -200
# fixed wing pitch tune
PTCH_RATE_D 0.01
PTCH_RATE_FF 0.15
PTCH_RATE_FLTT 6
PTCH_RATE_I 0.27
PTCH_RATE_P 0.54
# fixed wing roll tune
RLL_RATE_D 0.004
RLL_RATE_FF 0.2
RLL_RATE_I 0.2
RLL_RATE_P 0.5
# vtol motor notch filter
INS_HNTCH_ENABLE 1
INS_HNTCH_ATT 60
INS_HNTCH_BW 31
INS_HNTCH_FREQ 62
INS_HNTCH_HMNCS 3
INS_HNTCH_MODE 1
INS_HNTCH_OPTS 1
INS_HNTCH_REF 0.332000
# IC motor notch filter. Note that
# you need to setup RPM with EFI or pin input
INS_HNTC2_ENABLE 1
INS_HNTC2_ATT 50
INS_HNTC2_BW 15
INS_HNTC2_FREQ 30
INS_HNTC2_HMNCS 3
INS_HNTC2_MODE 2
INS_HNTC2_OPTS 1
INS_HNTC2_REF 1
# enable quadplane as X frame
Q_ENABLE 1
Q_FRAME_CLASS 1
Q_FRAME_TYPE 1
# adjust rates
Q_ACRO_PIT_RATE 150
Q_ACRO_RLL_RATE 300
Q_ACRO_YAW_RATE 15
# small angle max
Q_ANGLE_MAX 1000
# setup assistance
Q_ASSIST_ANGLE 35
Q_ASSIST_SPEED 22
# lower rate accels
Q_A_ACCEL_P_MAX 25000
Q_A_ACCEL_R_MAX 25000
Q_A_ACCEL_Y_MAX 9000
Q_WP_ACCEL 173
Q_A_ANG_PIT_P 4
Q_A_ANG_RLL_P 4
Q_A_ANG_YAW_P 3
Q_A_RATE_FF_ENAB 0
# pitch PID gains
Q_A_RAT_PIT_D 0.018
Q_A_RAT_PIT_FLTT 10
Q_A_RAT_PIT_I 0.227
Q_A_RAT_PIT_P 0.454
# roll PID gains
Q_A_RAT_RLL_D 0.0108
Q_A_RAT_RLL_FLTT 10
Q_A_RAT_RLL_I 0.156
Q_A_RAT_RLL_P 0.312
Q_A_RAT_YAW_FLTE 2
Q_A_RAT_YAW_FLTT 10
Q_A_RAT_YAW_P 1.5
# adjust loiter break
Q_LOIT_BRK_DELAY 0.5
Q_LOIT_BRK_JERK 500
# approx expo and hover
Q_M_THST_EXPO 0.7
Q_M_THST_HOVER 0.383955
# adjust transition time
Q_TRANSITION_MS 3000
# rear canards on servos 9 and 10, setup as ailerons
SERVO9_FUNCTION 4
SERVO10_FUNCTION 4
# front canards on servos 11 and 12, setup as elevons, with
# 75% elevator and 25% aileron.
# servo11 as right elevon, servo12 as left elevon
SERVO11_FUNCTION 78
SERVO11_REVERSED 1
SERVO12_FUNCTION 77
# VTOL motors on outputs 1 to 4
SERVO1_FUNCTION 33
SERVO2_FUNCTION 34
SERVO3_FUNCTION 35
SERVO4_FUNCTION 36
# rudder on servo5
SERVO5_FUNCTION 21
SERVO5_REVERSED 1
# throttle on servo7
SERVO7_FUNCTION 70
# motor start on servo8
SERVO8_FUNCTION 69
TECS_PTCH_DAMP 0.1
WP_LOITER_RAD 300
WP_RADIUS 100
# enable ICE subsystem
ICE_ENABLE 1
ICE_IDLE_DB 50
ICE_IDLE_PCT 15
ICE_IDLE_RPM 2200
ICE_IDLE_SLEW 1
ICE_OPTIONS 4
ICE_RPM_CHAN 1
# cut ICE engine on landing
Q_LAND_ICE_CUT 1
# setup RPM as interrupt on AUX6
RPM1_TYPE 2
RPM1_PIN 55