Normal Flight at T rim Speed High Angle of Attack at  Minimum Controlled Airspeed Low Angle of Attack at High Airspeed Top View Side View CLW CLW b c CLW A$_{T}$ A$_{R}$ L$_{T}$ L$_{R}$ Center of lift at  same longitudinal  position as center  of gravity. b c Center of lift behind center of gravity creating nose-down moment Center of lift ahead of center of  gravity creating nose-up moment Stalled area not producing lift. Center of lift of wing (CLW)  behind center of gravity. Tip area at low angle of attack not producing lift. Center of lift of wing (CLW) ahead of center of gravity. CG CG CG CG CG CL W CL W CL W L$_{W}$ L$_{W}$ L$_{R}$ L$_{T}$ L$_{R}$ L$_{W}$ A B C Nose Nose Nose CG Trim Minimum Controlled  Airspeed High Speed High AOA Low AOA Figure 2-25. Trim, minimum controlled airspeed, and high speed pitching moments. the tips are still flying. The specific stall characteristics of  each wing are different and this stall pattern shown here is  used for example. As the pilot pushes out on the control bar, this creates a pilot  input force that has a moment arm from the control bar up to  the wing hang point.  [Figure 2-27]  From this pilot-induced pitch moment, the control bar is  pushed out, the nose raised, and the AOA increases an equal  amount for both the root and the tip chords. However, as  shown in  Figures 2-26  and  2-28,  the average C$_{L}$ change is  greater at the low AOA at the tip chords, while the amount  At very low AOA, the tip chords are near zero AOA or below,  not producing any lift, as shown in  Figure 2-25C . At this  point, the nose area is producing all of the lift for the wing.  The CLW moves forward a distance “c,” creating a positive  stabilizing moment to raise the nose.  Pitch Pressures  Low Angles of Attack 2-14