This is the 16172nd most frequent Russian word.
ракетном
"Ракетном" is the prepositional case of "ракетный," meaning "rocket" or "missile-related."
The word 'ракетном' functions here as an adjective modifying 'двигателе' (engine), indicating the type or association of the engine, specifically that it connects to rockets.
Мы изучали систему управления в ракетном двигателе.
We were studying the control system in the rocket engine.
Here, 'ракетном' describes 'центре' (center), showing that the center is associated with rockets, possibly involved in research or production.
В ракетном центре проходят испытания новой технологии.
In the rocket center, they are testing new technology.
In this sentence, 'ракетном' qualifies 'складе' (warehouse), describing its purpose or specialization in handling or storing materials related to rockets.