CBU-89 uses magnetic target sensing and deploys how much trip wire?

CBU-89 uses magnetic target sensing and deploys how much trip wire?

• A. 60 ft of trip wire
• B. 20 ft of trip wire
• C. 80 ft of trip wire
• D. 40 ft of trip wire

Answer: (D)

Magnetic target sensing works by detecting a ferrous metal object within the sensor’s field and then triggering the munition’s defensive measures. For the CBU-89, once a metallic target is identified, it deploys a pre-set length of trip wire to form a barrier that can intercept or influence approaching vehicles or personnel. The 40-foot length is chosen to provide practical coverage along the anticipated approach path while staying within the system’s deployment and spool constraints. It’s long enough to span the corridor where a target is expected to pass, yet short enough to minimize deployment complications, tangling, or excessive material that isn’t needed for the typical engagement geometry. Shorter lengths risk leaving gaps in the barrier, while longer lengths add complexity without proportionate benefit in this configuration.

Magnetic target sensing works by detecting a ferrous metal object within the sensor’s field and then triggering the munition’s defensive measures. For the CBU-89, once a metallic target is identified, it deploys a pre-set length of trip wire to form a barrier that can intercept or influence approaching vehicles or personnel.

The 40-foot length is chosen to provide practical coverage along the anticipated approach path while staying within the system’s deployment and spool constraints. It’s long enough to span the corridor where a target is expected to pass, yet short enough to minimize deployment complications, tangling, or excessive material that isn’t needed for the typical engagement geometry. Shorter lengths risk leaving gaps in the barrier, while longer lengths add complexity without proportionate benefit in this configuration.