Fighter jet F-35B 's internal weapons bay is too small for a Small Diameter Bomb II ( SDB II ) load . Though it 's mandated that an F-35B hold eight SDB IIs in the bay , only four can reportedly fit . A F-35 program spokesman has said changes are being made so the fighter jet can be released on schedule . Comment: The F-35 program will cost an estimated $ 590billion over the next decade . F-35B is slated to be used by the British Royal Navy on the HMS Queen Elizabeth aircraft carrier .
Fighter jet F-35B 's internal weapons bay is too small for a Small Diameter Bomb II ( SDB II ) load . Though it 's mandated that an F-35B hold eight SDB IIs in the bay , only four can reportedly fit . A F-35 program spokesman has said changes are being made so the fighter jet can be released on schedule . The SDB II can employ a number of techniques - including imaging infrared , laser , and radar homing - to hit targets . The F-35 program will cost an estimated $ 590billion over the next decade . F-35B is slated to be used by the British Royal Navy on the HMS Queen Elizabeth aircraft carrier .