Influence of an Aft C. G. on Longitudinal Flying Qualities

The effects of aft center-of-gravity (cg) travel on the total longitudinal response characteristics of the aircraft are reviewed and the implications of this cg shift on the aircraft's longitudinal flying qualities discussed. In addition, variations in pitch damping, control gearing, and speed effects are discussed at specific aft cg locations. The examples used are based largely on experience gained during in-flight demonstration programs using the Cornell Aeronautical Laboratory, Inc. (CAL) variable stability B-26 aircraft.