An aircraft performance modification system for modifying performance of an aircraft, the aircraft being characterized by an aircraft center-of-gravity (CG), an aircraft longitudinal axis that passes through the aircraft CG and parallel to a line from nose to tail, an aircraft lateral axis that passes through the aircraft CG and parallel to a line from wingtip to wingtip, and an aircraft vertical axis that passes through the aircraft CG at right angles to the aircraft longitudinal axis and the aircraft lateral axis, the aircraft comprising aircraft components that comprise fuel tanks, one or more aircraft fuel control systems, aircraft flight controls, aircraft flight control surfaces, one or more aircraft flight control systems, aircraft flight controls settings, one or more aircraft engine(s), one or more aircraft engine power setting control systems, and aircraft engine power control settings, the aircraft performance modification system comprising:
- a CG subsystem that coordinates, manages, or controls movement of fuel between, and to or from, one or more of the fuel tanks to adjust a CG location of the aircraft CG, wherein the CG subsystem is configured to adjust the CG location within and at times outside the range of CG locations;
- one or more processor systems operatively connected with one or more of the aircraft components, wherein the one or more processor systems are configured to:
- manage the CG subsystem, the aircraft flight controls settings, and the aircraft engine power control settings, and
- concurrently adjust the aircraft CG, the aircraft flight controls settings, and the aircraft engine power control settings to manipulate forward and aft pitching control forces about the aircraft lateral axis;
- wherein one or more aircraft flight performance and systems parameters that are based on aircraft flight performance optimization requirements are inputs to the one or more processor systems;
- wherein the one or more processor systems are configured for automatically or autonomously
- a) controlling
- (i) adjustments to the aircraft CG such that the CG location is within, and at times outside, a range of CG locations along the aircraft,
- (ii) the movement and positions of the aircraft flight control surfaces, and
- (iii) adjustments to the aircraft engine(s) output power of the one or more aircraft engine(s)
- to reduce drag by controlling aircraft configurations that result in adjusted drag, yielding flight performance improvements attributable to decreased drag, and
- b) controlling
- (i) the adjustments to the aircraft CG,
- (ii) the movement and positions of the aircraft flight control surfaces, and
- (iii) the adjustments to the aircraft engine(s) output power and resulting engine(s) thrust
- to prevent a stalled condition.