rocket motor

Each solid rocket motor makes up most of the length of the 149-foot solid rocket boosters.

Crews were then able to place the 177 pins attaching each solid rocket motor to the base of the solid rocket booster, known as the aft skirt.

The first significant action begins Tuesday, when the science center will lift the first solid rocket motor into place.

“But then what will take more time — hopefully not too much more time, but potentially a lot more time — is putting the approximately 180 pins in that attach the solid rocket motor to the aft skirt,” Rudolph said.

Each solid rocket motor measures 116 feet and makes up most of the length of the 149-foot solid rocket boosters.