sal Perturbed Motion About 63 Degree Elevation Nominal Elevation Angle of 63 Degrees 8 Single pendulum system at 63 degrees elevation, S/C 0.6 oscillates slightly less than three cycles per revolution -0.5 V-aYIs Nominal Elevation Angle of 63 Degrees 8 Douple pendulum system higher elevation S/C moves slowe and falls behind lower elevation s/c moves faster and moves ahead similar to hill s equations y-axIs X-axPerturbed Motion About 63 Degree Elevation Perturbed Motion About 63 Degree Elevation F Single pendul um system — at 63 degrees elevation, S/C oscillates slightly less than three cycles per revolution F Douple pendulum system — higher elevation S/C moves slower and falls behind — lower elevation S/C moves faster and moves ahead — similar to Hill’s equations -1 -0.5 0 0.5 1 -1 -0.5 0 0.5 1 0 0.2 0.4 0.6 0.8 1 x-axis Nominal Elevation Angle of 63 Degrees y-axis -1 -0.5 0 0.5 1 -1 -0.5 0 0.5 1 0 0.2 0.4 0.6 0.8 1 x-axis Nominal Elevation Angle of 63 Degrees y-axis