Kites for Wind Energy

Nomenclature

The following symbols are used to define aerodynamic quantities in this chapter:

Symbol :

Meaning

AR:

Wing aspect ratio (= b ²∕S)

b :

Wing span

$C_{D_{t} }^{e}$ :

Effect of tether drag experienced at the aircraft

C_L :

Aircraft lift coefficient

$C_{L_{\alpha _{vt} }}$ :

Vertical tail lift-curve slope

C_N :

Normal drag coefficient of the tether

d :

Diameter of the tether

e :

Oswald’s spanwise efficiency factor

F _centrifugal :

Magnitude of the centrifugal force

$F_{\mbox{drag}}^{r}$ :

Tether drag force projected along the tether direction

$F_{g}^{r}$ :

Gravity force on the aircraft projected along the tether direction

$F_{t}^{r}$ :

Effective gravity force on the tether projected along the tether direction

G_e :

Effective glide ratio of the aircraft modified to take into account the contribution of tether drag experienced by the aircraft ($=C_{L} /\left ( {C_{D} +C_{D_{t} }^{e} } \right ))$

h :

Altitude of aircraft

h ₀ :

Reference height used by wind power law model

...