Designed for cost-effective solutions on missions to medium- and high-altitude Earth orbits (including constellation deployment and Earth escape trajectories), Soyuz-Fregat is an important asset in Starsem's commercial launch services offering.

Soyuz-Fregat uses the basic Soyuz vehicle composed of a lower portion consisting of four boosters (the first stage) and a central core stage (second stage), and an upper portion consisting of the third stage, payload adapter and fairing. All stages of the basic Soyuz launcher use liquid oxygen and kerosene propellants.

The Soyuz is topped off by the Fregat upper stage a flight- proved propulsion subsystem used on nearly 30 interplanetary spacecraft. During its numerous missions, the engine demonstrated the highest reliability under extreme conditions and exceeded its technical specifications.

Fregat operates on UDMH fuel and N2O4 oxidizer, and the single-chamber engine can be restarted as many as 20 times.

The Soyuz-Fregat launcher version has a 5,000 kg. payload performance to a 450-km. circular orbit inclined 51.8 deg., or 4,000 kg. to a 1,400 km. circular orbit.