Page 64 - Aeronautical Engineer Data Book

Symbols and notations 51
Table 3.4 Continued

Elevator hinge moment derivative with respect
b 3
to .
B Input matrix. Number of blades on a propeller.
c Wing chord. Viscous damping coefficient. Pitot
tube coefficient.
Root chord.
c 0
Tip chord.
c t
Local chord at spanwise co-ordinate y.
c y
cg Centre of gravity.
cp Centre of pressure.
C Output matrix.
Coefficient of contraction.
C C
Total drag coefficient.
C D
Zero lift drag coefficient.
C DO
Frictional drag coefficient.
C f
Lift coefficient.
C L
Wing lift coefficient.
C LW
Tailplane lift coefficient.
C LT
Elevator hinge moment coefficient.
C H
Pitching moment coefficient.
C m
Pitching moment coefficient about aerodynamic
C MO
centre of wing.
Yawing moment coefficient.
C n
Pressure coefficient. Power coefficient for
C p
propellers.
Resultant force coefficient.
C R
Coefficient of velocity.
C v
CP Centre of pressure.
D Drag. Propeller diameter.
D' Drag in a lateral-directional perturbation.
D Direction cosine matrix. Direct matrix.
Camber drag.
D c
Friction drag.
D f
Pressure drag.
D p
Incidence drag.
D
f Coefficient of friction.
F Aerodynamic force. Feed-forward path transfer
function. Fractional flap chord.
Aerodynamic force due to camber.
F c
Froude number.
F r
Aerodynamic force due to incidence.
F
Elevator control force
F
g Acceleration due to gravity.
G Controlled system transfer function.
h Height. Centre of gravity position on reference
chord. Enthalpy (specific).
Aerodynamic centre position.
h 0
Fin height co-ordinate above roll axis.
h F
Controls-fixed manoeuvre point position on
h m
reference chord.
Controls-free manoeuvre point position on
h' m
reference chord.