Assertion: spacecraft's system | /r/CapableOf | use the 5-segment boosters
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text: Initially, NASA switched over to a system using the 5-segment boosters and a cluster of five RS-68s (which resulted in a widening of the Ares V core unit), then NASA reconfigured the vehicle with six RS-68B engines, with the boosters themselves becoming "5.5-Segment Boosters," with an additional half-segment to provide additional thrust at liftoff.