Page 308 - Aeronautical Engineer Data Book
P. 308
Tailplane lift effect
= Z q Tailplane lift due to downwash lag effect d (added mass effect) d Mach dependent, small at low speed Pitch stiffness, dependent on static margin l T Pitch dam
d d = – K n = c l T = c
� r 1 – V – V r 1 � C m ∂ V 0 V ∂ C d m d – V T l T � –V T 1 �
Normal force due to pitch rate Normal force due to downwash lag Pitching moment due to velocity Pitching moment due to ‘incidence’ Pitching moment due to pitch rate Pitching moment due t
Z q Z w ˚ M u M w M q M w ˚
