What provides spin and upward thrust to BLU-108 submunitions after release?

The spin and upward thrust for BLU-108 submunitions after their release is primarily provided by a rocket motor. Upon deployment, the rocket motor ignites, producing thrust that not only propels the submunitions upward but also causes them to spin, which enhances their stability during flight. This stability is crucial for accurate targeting and ensures that the submunitions can disperse effectively to cover the designated areas.

The rocket motor's contribution is vital because it allows for the correct trajectory and separation of the submunitions from the carrier, ensuring they function as intended once they reach their target area. This design is particularly important given the nature of the BLU-108, which is meant to effectively engage multiple targets over a wide area by deploying smaller anti-armor projectiles.

While the guidance system is responsible for directing the submunitions and manual control is typically not applicable in this context, and the ejector mechanism is involved in the release process, it is indeed the rocket motor that plays the key role in providing the necessary spin and upward thrust. Therefore, understanding the function of the rocket motor is crucial for comprehending how the BLU-108 operates after release.