This is the point at which the pitching moment is constant regardless of the angle of attack, and thus any movement of the stabilator can be made without added pilot effort.
22.
The sections used were highly cambered in the leading edge with virtually no camber aft of mid chord, producing a section with reduced twisting and pitching moments and high lift coefficients.
23.
For example, a pitching moment is a vertical force applied at a distance forward or aft from the aerodynamic center of the aircraft, causing the aircraft to pitch up or down.
24.
With the model mounted on a force balance, one can measure lift, drag, lateral forces, yaw, roll, and pitching moments over a range of angle of attack.
25.
Configuration buildup studies revealed the adverse nacelle influence on tail pitching moment contribution above 30 degrees angle of attack was not unduly severe and no appreciable effect on elevator or stabilizer effectiveness was found.
26.
For example, a pitching moment is a vertical force applied at a distance forward or aft from the center of gravity of the aircraft, causing the aircraft to pitch up or down.
27.
The combination of the two concepts of " aerodynamic center " and " pitching moment coefficient " make it relatively simple to analyse some of the flight characteristics of an aircraft.
28.
The distances and the increasing number of horizontal landings led the IAAF to redesign the men's javelin to reduce distance and increase the implement's downward pitching moment to allow for easier measurement.
29.
These images, combined with the recorded flight time history, can be used to obtain critical aerodynamic parameters such as lift, drag, static and dynamic stability, flow characteristics, and pitching moment coefficients.
30.
These tests, together with those conducted by the French Air Ministry, discovered if the angle of attack of the front wing fell below " 15?insufficient pitching moment was generated to raise the nose.
