The CMARc input file Axes and rotations A conventional coordinate system is used X representing the longitudinal axis and increasing aft Y the spanwise axis increasing to the starboard Z the vertical axis increasing upward All rotations are performed in accordance with the right hand ruleThe CMARC input file Axes and rotations • A conventional coordinate system is used – X representing the longitudinal axis and increasing aft – Y the spanwise axis increasing to the starboard – Z the vertical axis increasing upward. • All rotations are performed in accordance with the right hand rule