Like most liquid propellant rocket engines, the Raptor harness contains many components that control the engine’s operation. At the same time, with an increase in technical perfection, the number of strapping elements also increases. The high demand for these engines as part of the Starlink satellite deployment plan has contributed to the acceleration of their production. Part of the payment for speeding up production fell on the harness - designed initially exclusively for ground testing of early versions of the engine, it iteratively turned into a system suitable for flights with smaller dimensions and fewer connections.
