内容来自维基.

Flight III[edit]

 

USS Jack H. Lucas, the first Flight III destroyer, after her launch on 4 June 2021

In place of the canceled CG(X) program, the U.S. Navy began detailed design work on a DDG-51 Flight III design in FY2013.^[142] The Navy planned to procure 24 Flight III ships from FY2016 to FY2031.^[143] In June 2013, it awarded $6.2 billion in destroyer contracts.^[144] Costs for the Flight III ships increased as requirements for the program grew, particularly related to the planned Air and Missile Defense Radar (AMDR) needed for the BMD role.^[145] An AMDR with a mid-diameter of 22 feet (6.7 m) was proposed for CG(X), while the DDG-51 Flight III design could carry an AMDR with a mid-diameter of only 14 feet (4.3 m).^[146] The Government Accountability Office (GAO) found that the design would be "at best marginally effective" because of the "now-shrunken radar". The U.S. Navy disagreed with the GAO findings, stating that the DDG-51 hull was "absolutely" capable of fitting a large enough radar to meet requirements.^[147]

The Flight III's AN/SPY-6 AMDR with a mid-diameter of 14 feet (4.3 m) uses an active electronically scanned array with digital beamforming, compared to the previous passive electronically scanned array AN/SPY-1D with a mid-diameter of 12 feet (3.7 m).^{[146][148][149]} According to Raytheon, the contractor for the SPY-6, the 37-RMA SPY-6(V)1 offers a 15 dB improved sensitivity over SPY-1.^{[N 5][151]} The Flight III's AMDR is integrated with Aegis Baseline 10.^[152] The new radar also requires more power; the three-megawatt, 450 V AG9140 generators were upgraded to four-megawatt, 4,160 V AG9160 generators.^[14][15] Additionally, the air conditioning plants were upgraded to increase the ships' cooling capacity.^[153] The area near where the two rigid-hull inflatable boats (RHIBs) are stored was enclosed to accommodate additional crew, so the RHIBs are stacked.^[154] Other modifications include replacement of the Halon-based fire suppression system with a water mist system and strengthening of the hull to support the design's additional weight.^[153]

14 Flight III ships have been ordered,^[155] and Flight III IOC is scheduled for 2023 with the commissioning of USS Jack H. Lucas.^[156][157] The U.S. Navy may procure up to 42 Flight III ships for an overall total of 117 ships of the class.^[157]

^{https://en.wikipedia.org/wiki/Arleigh_Burke-class_destroyer}