Propulsion based on circular trajectory acceleration may, in the future, be feasible only for the transport of materials due to the stringent time limits on human tolerance to high accelerations. In addition to acceleration, the projectile is subjected to significant tensile and bending forces during circular motion before launch, which greatly restricts the types of materials that can be transported. However, once viscous drag due to the atmosphere becomes negligible, it may be possible to stabilize the orbit using a specially designed accelerator, potentially located at the apogee of the trajectory.