Used attributively before nouns (e.g. "sustainer engine") to denote something that provides sustaining power or support.
Переводы
The missile's sustainer motor kept it on course during the mid-flight phase.
Le moteur de maintien du missile l’a maintenu sur sa trajectoire pendant la phase de vol intermédiaire.
sustentateurTerme technique, surtout en aéronautique et en astronautique. Определения
Providing sustaining power or support; maintaining operation after an initial phase. The missile's sustainer motor kept it on course during the mid-flight phase.