The GBU-39 SDB has a wingspan of 63 inches when deployed.

The GBU-39 SDB has a wingspan of 63 inches when deployed.

• A. 71 inches
• B. 63 inches
• C. 50 inches
• D. 60 inches

Answer: (B)

Deployed wingspan is the width from wingtip to wingtip when the bomb’s wings are extended for flight. For the GBU-39 SDB, that width is 63 inches, about five feet three inches. This is the official spec used for loading and clearance in aircraft bays, so 63 inches is the correct figure. The other numbers don’t match the published deployed width and wouldn’t reflect the bomb’s actual size in flight.

Deployed wingspan is the width from wingtip to wingtip when the bomb’s wings are extended for flight. For the GBU-39 SDB, that width is 63 inches, about five feet three inches. This is the official spec used for loading and clearance in aircraft bays, so 63 inches is the correct figure. The other numbers don’t match the published deployed width and wouldn’t reflect the bomb’s actual size in flight.