Iy. Baritzhack, THE PIOGRAM - AN EASY TOOL FOR ANGULAR POSITION AND RATE COMPUTATIONS, The Journal of the astronautical sciences, 41(4), 1993, pp. 519-529
The Piogram is a symbolic representation of Euler angle rotations. Thi
s paper demonstrates the use of the Piogram for computing coordinate t
ransformations, directions, and angular rates in three-dimensional Euc
lidean space. It is shown that the Piogram is an easy and an effective
tool which saves time and computation. The use of the Piogram is expl
ained, and its efficiency is demonstrated through several examples.