Big dumb boosterとは 意味・読み方・使い方

Big Dumb Boosters (BDB) are a general class of launch vehicle built around the idea that it is cheaper to mass build and operate a large, strong, heavy rocket of simple design than it is to build a few smaller, lighter, more cleverly-designed ones. Even though the large booster is less efficient for an all around operation, its total cost of operation is cheaper because it is easier to build, operate and maintain. As with all forms of mass production, it is likely that, as builders gain more experience with production of parts and construction, and more production infrastructure is established, costs may go down further. However, in having a bigger rocket, a smaller number of rockets need to be produced to launch a certain mass of payload into orbit, thereby working against mass production.