Figure 109.General coplanar transfer between circular orbits. Orbit Change A velocity change which lies in the plane of the orbit can change its size or shape, or rotate the line of apsides. To change the orientation of the orbit plane in space, DV should have a component which is perpendicular to the orbital plane. Figure 1010.Out-of-plane orbit change. Simple Plane Change Orbital maneuvers are characterized by a change in orbital velocity. If a velocity increment which is a vector, is added to a satellite velocity, V1, ΔV, also a vector, then a new satellite velocity V2, results. A finite which does ΔV not change the speed and flight-path angle of the satellite, will only change the plane of the orbit. Thus, the maneuver is called simple plane change. A plane change maneuver rotates the orbit plane in inertial space while holding the size and shape, a and e fixed. During a circular orbit plane change, through an angle the is applied so as to rotate the velocity, V θ, ΔV through the angle The resulting velocity triangle is isosceles, as observed θ. in Fig. from the right triangle,
Figure 109.General coplanar transfer between circular orbits. Orbit Change A velocity change which lies in the plane of the orbit can change its size or shape, or rotate the line of apsides. To change the orientation of the orbit plane in space, DV should have a component which is perpendicular to the orbital plane. Figure 1010.Out-of-plane orbit change. Simple Plane Change Orbital maneuvers are characterized by a change in orbital velocity. If a velocity increment ΔV, which is a vector, is added to a satellite velocity, V1, also a vector, then a new satellite velocity V2, results. A finite ΔV which does not change the speed and flight-path angle of the satellite, will only change the plane of the orbit. Thus, the maneuver is called simple plane change. A plane change maneuver rotates the orbit plane in inertial space while holding the size and shape, a and e fixed. During a circular orbit plane change, through an angle θ, the ΔV is applied so as to rotate the velocity, V through the angle θ. The resulting velocity triangle is isosceles, as observed in Fig. from the right triangle,
Space_Mechanics_Chapter_10_OrbitalManeuvers.docx