WR-21 引擎的一個(gè)純度檢驗(yàn)證明是它的模組設(shè)計(jì). 個(gè)別的組件可能搭乘船被移動(dòng)而且代替,除去對(duì)引擎的需要在維護(hù)期間被移動(dòng)，減少支持需求，而且促進(jìn)舷側(cè)維護(hù). 被預(yù)先平衡的除此之外，那個(gè)替換 WR-21 的元素是,除去對(duì)整齊平衡的需要在核心引擎被裝配之后. "這些特征能表現(xiàn)維護(hù)的重要減少而且支援費(fèi)用 , 我們估計(jì)每一一年船是 $250,000,"草率了事的 Harmeyer 說(shuō),ICR 計(jì)畫在 Westinghouse 海產(chǎn)的區(qū)分設(shè)計(jì).
除此之外， WR-21 被設(shè)計(jì)促進(jìn)它的整合進(jìn)一艘 DDG-51( 彈導(dǎo)驅(qū)逐艦) 班


A hallmark of the WR-21 engine is its modular design. Individual modules can be removed and replaced aboard ship, which eliminates the need for the engine to be removed during maintenance, reduces support requirements, and facilitates shipboard maintenance. In addition, the rotating elements of the WR-21 are prebalanced, eliminating the need for trim balancing after the core engine is assembled. “these features can represent a significant reduction in maintenance and support costs, which we estimated to be $250,000 per ship per year,” said Jerry Harmeyer, ICR project engineer at Westinghouse Marine Division.