What does CBC stand for?

[ILLUSTRATION OMITTED] Delta IV Primary function: Evolved expendable launch vehicle designed for optimum performance for a wide range of flight profiles, Dimensions: Common booster core length 205 ft.

ATK also supplied 12 key composite structures for the Delta IV Heavy launch vehicle: the interstage that provides the interface between the Common Booster Core (CBC) and the cryogenic second stage, two nose cones for the port and starboard strap-on CBCs, three centerbodies that integrate the liquid oxygen (LO2) and liquid hydrogen (LH2) tanks, three thermal shields that protect the RS-68 engines during ignition and flight, and three LO2 skirts.

6 million pound rocket, which can carry the military's largest payloads, uses three common booster cores that are strapped together with a trio of hydrogen-fueled motors and then added to an upper stage rocket.

Boeing said yesterday that it would build the common booster core for its new Delta IV rockets at a 2 million-square-foot plant in an industrial park at Decatur.

The aerospace giant said Tuesday that it would build the common booster core for its Delta IV rockets at a 2 million-square-foot facility in Decatur in northern Alabama.

The Medium+ category of the Delta IV features the Boeing Common Booster Core first stage, powered by the Boeing Rocketdyne RS-68 main engine; two Alliant Technologies strap-on solid rocket motors; the flight proven Pratt & Whitney RL10B-2 upper stage engine and a four-meter Boeing composite payload fairing.

The largest of the Delta IV family, the Heavy version features three Common Booster Cores mounted together to form a triple-body rocket.

It is designed with three common booster cores (CBCs) joined together.