STS 128, also known as Discovery (STS-128), is a crewed spacecraft operated by JSC and launched on August 29, 2009, from LC39A at AFETR using the Space Shuttle launch vehicle. The spacecraft has a winged orbiter configuration with dimensions of 37.3 meters in length and span, and a diameter of 23.8 meters. It has a dry mass of 88,328 kilograms and launched with a total mass of 97,418 kilograms. Its propulsion is provided by two OME (AJ10-190) motors, while power comes from fuel cells and batteries. The satellite's shape can be described as box-like with wings and fins. It was manufactured by BNAP for the purpose of serving as a crewed spacecraft.