A wing and tail are geometrically similar, while tail area is one-third of the wing area and distance between two aerodynamic centres is equal to wing semi-span $(b / 2) .$ In addition, following data is applicable:
$\epsilon_{\alpha}=0.3, C_{L}=1.0, C_{L_{\alpha}}=0.08 / \operatorname{deg} ., \bar{c}=2.5 m, b=30 m, C_{M_{a c}}=0, \eta_{t}=1 .$ The symbols have their usual aerodynamic interpretation.
The angle of incidence of tail to trim the wing-tail combination for a $5 \%$ static margin is
(A) $-1.4^{\circ}$
(B) $-0.4^{\circ}$
(C) $0.4^{\circ}$
(D) $1.4^{\circ}$
A wing and tail are geometrically similar, while tail area is one-third of the wing area and distance between two aerodynamic centres is equal to wing semi-span $(b / 2) .$ In addition, following data is applicable:
$\epsilon_{\alpha}=0.3, C_{L}=1.0, C_{L_{\alpha}}=0.08 / \operatorname{deg} ., \bar{c}=2.5 m, b=30 m, C_{M_{a c}}=0, \eta_{t}=1 .$ The symbols have their usual aerodynamic interpretation.
The angle of incidence of tail to trim the wing-tail combination for a $5 \%$ static margin is
(A) $-1.4^{\circ}$
(B) $-0.4^{\circ}$
(C) $0.4^{\circ}$
(D) $1.4^{\circ}$