Description
The boom is essentially the same design as the Canadarm itself, except that the articulatory joints are fixed. OBSS arms for the three remaining orbiters were manufactured relatively quickly, primarily because some spare parts for the Canadarm system were used.
Two instrumentation packages are installed at the far end of the OBSS. Sensor package 1 consists of the Laser Dynamic Range Imager (LDRI) and an Intensified Television Camera (ITVC). Sensor package 2 is the Laser Camera System (LCS) and a digital camera (IDC). The sensors can record at a resolution of a few millimeters, and can scan at a rate of about 2.5 inches (64 mm) per second.
It is also fitted with handrails, so that the boom could be used to provide spacewalkers with access to the shuttle's underbelly in case in-flight repairs are required.
Read more about this topic: Orbiter Boom Sensor System
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