A Tower in Space-Time (The Stasis Stories #5)

In this, the fifth book in the “Stasis Stories,” Kaem’s newfound physical fitness is letting him perform at an astonishing level in physical endeavors such as soccer, and martial arts.
The company he, Arya Vaii, and Gunnar Schmidt founded to commercially develop his time-stopping discovery is making money hand over fist. Currently, their profits come from their use of the phenomenal physical properties of a time-stopped segment of space-time to build rockets.
But now they’re building their space tower. Taking off at a thirty-degree angle from eastern Virginia, it’s 200 kilometers long and a hundred kilometers high. By placing the interior of their spacecraft and its passengers in stasis they can accelerate launches at fifteen gravities, reaching orbital speeds before the craft leaves the rail. This lets them put payloads in orbit for a thousand times lower cost than a rocket!
The world, and some unscrupulous people, are turning to Kaem and his company to further our exploitation of orbital space…