Aerodynamic Data
|
Variable
|
Variable in Code
|
Description
|
Units
|
Value(s)
|
Source
|
Notes
|
CD0
|
CDo
|
drag coefficient at =0
|
-
|
0.031
|
c172_aero.c
|
|
CD
|
CD_a
|
drag curve slope
|
1/rad
|
0.130
|
c172_aero.c
|
not used in favor of CDK
|
K
|
CDK
|
induced drag constant, i.e. 1/(pi*e*AR)
|
-
|
0.054
|
c172_aero.c
|
|
CDe
|
CD_de
|
drag due to elevator
|
1/rad
|
0.060
|
c172_aero.c
|
e positive down
|
CL0
|
CLo
|
lift coefficient at =0
|
-
|
0.310
|
c172_aero.c
|
|
CL
|
CL_a
|
lift curve slope
|
1/rad
|
5.143
|
c172_aero.c
|
|
CL
|
CL_adot
|
lift due to angle of attack rate
|
1/rad
|
1.7
|
c172_aero.c
|
|
CLq
|
CL_q
|
lift due to pitch rate
|
1/rad
|
3.9
|
c172_aero.c
|
|
CLe
|
CL_de
|
lift due to elevator
|
1/rad
|
0.430
|
c172_aero.c
|
e positive down
|
Cm0
|
Cmo
|
pitch moment coefficient at =0
|
-
|
-0.015
|
c172_aero.c
|
|
Cm
|
Cm_a
|
pitch moment due to angle of attack
|
1/rad
|
-0.89
|
c172_aero.c
|
|
Cm
|
Cm_adot
|
pitch moment due to angle of attack rate
|
1/rad
|
-5.2
|
c172_aero.c
|
|
Cmq
|
Cm_q
|
pitch moment due to pitch rate
|
1/rad
|
-12.4
|
c172_aero.c
|
|
Cme
|
Cm_de
|
pitching moment due to elevator
|
1/rad
|
-1.28
|
c172_aero.c
|
e positive down
|
CY
|
CY_beta
|
side force fue to sideslip angle
|
1/rad
|
-0.31
|
c172_aero.c
|
|
CYp
|
CY_p
|
side force due to roll rate
|
1/rad
|
-0.037
|
c172_aero.c
|
|
CYr
|
CY_r
|
side force due to yaw rate
|
1/rad
|
0.21
|
c172_aero.c
|
|
CYa
|
CY_da
|
side force due to aileron
|
1/rad
|
0
|
c172_aero.c
|
a positive right aileron up
|
CYr
|
CY_dr
|
side force due to rudder
|
1/rad
|
0.187
|
c172_aero.c
|
r positive left
|
Cl
|
Cl_beta
|
dihedral effect
|
1/rad
|
-0.089
|
c172_aero.c
|
|
Clp
|
Cl_p
|
roll damping
|
1/rad
|
-0.47
|
c172_aero.c
|
|
Clr
|
Cl_r
|
roll moment due to yaw rate
|
1/rad
|
0.096
|
c172_aero.c
|
|
Cla
|
Cl_da
|
roll moment due to aileron
|
1/rad
|
-0.178
|
c172_aero.c
|
a positive right aileron up
|
Clr
|
Cl_dr
|
roll moment due to rudder
|
1/rad
|
0.0147
|
c172_aero.c
|
r positive left
|
Cn
|
Cn_beta
|
weathercock stability
|
1/rad
|
0.065
|
c172_aero.c
|
|
Cnp
|
Cn_p
|
adverse yaw
|
1/rad
|
-0.03
|
c172_aero.c
|
|
Cnr
|
Cn_r
|
yaw damping
|
1/rad
|
-0.099
|
c172_aero.c
|
|
Cna
|
Cn_da
|
yaw moment due to aileron
|
1/rad
|
0.053
|
c172_aero.c
|
a positive right aileron up
|
Cnr
|
Cn_dr
|
yaw moment due to rudder
|
1/rad
|
-0.0657
|
c172_aero.c
|
r positive left
|