The GBU-54 is identical to which bomb except for an added DSU-38 laser sensor?

The GBU-54 is identical to which bomb except for an added DSU-38 laser sensor?

• A. GBU-28
• B. GBU-12
• C. GBU-38
• D. GBU-31

Answer: (C)

The main idea here is how Laser JDAM variants differ from standard JDAMs. The GBU-54 uses the same airframe and JDAM guidance as the GBU-38, but adds the DSU-38 semi-active laser sensor. That sensor lets the bomb home onto a target that’s illuminated by a designator laser, while the GPS/INS guidance handles the initial path. In other words, the GBU-54 is essentially a GBU-38 with an added laser seeker to enable laser designation guidance. The other bombs listed are different weapons with distinct guidance or airframes (for example, a larger bunker-buster, or a different laser-guided bomb), so they aren’t identical except for the laser sensor.

The main idea here is how Laser JDAM variants differ from standard JDAMs. The GBU-54 uses the same airframe and JDAM guidance as the GBU-38, but adds the DSU-38 semi-active laser sensor. That sensor lets the bomb home onto a target that’s illuminated by a designator laser, while the GPS/INS guidance handles the initial path. In other words, the GBU-54 is essentially a GBU-38 with an added laser seeker to enable laser designation guidance. The other bombs listed are different weapons with distinct guidance or airframes (for example, a larger bunker-buster, or a different laser-guided bomb), so they aren’t identical except for the laser sensor.