ESP-1 holds the following ORUs:
ESP-2 was installed with the assistance of Space Shuttle Discovery's robotic arm and two spacewalkers during the STS-114 mission. It is much larger than ESP-1 with eight FRAMs creating room for up to eight spare parts (ORUs). Like ESP-1, it is powered by the Unity Module. However unlike ESP-1, the ESP-2 is attached to the Quest Joint Airlock using a specialized ESP Attachment Device (ESPAD). As of March 2008, the ORUs on ESP-2 are:
The four Video Stanchion Assemblies initially stored on ESP-2 were installed on the P1 truss segment on 7 November 2005, on the S1 truss segment on 3 August 2006, on the S3 truss segment during EVA 4 of STS-117 on 17 June 2007, and on the P1 truss segment during an EVA on July 23, 2007. The empty FSE/FRAM (Flight Support Equipment/Flight Releasable Attach Mechanism) was then removed from ESP-2 and jettisoned overboard on July 23, 2007. The empty VSSA FSE/FRAM was 96 kg in mass and 1.4 x 1.2 x 0.9m in size.
ESP-3 was installed on August 14 2007 during the Space Shuttle STS-118 mission. It has eight attachment sites capable of holding up to seven ISS spare parts and assemblies. The platform also has handrails and attachment points for tethers and foot restraints that astronauts can use while working with the ORUs on the ESP-3.
ESP-3 was the first major station element to be installed completely by robotics, using only the shuttle and station’s robotic arms, an External Berthing Camera System (BCS) and a Photovoltaic Radiator Grapple Fixture (PVRGF). Astronauts robotically installed the platform onto the station's P3 truss segment during the STS-118 mission’s seventh day.
As of June 2008, the following ORUs are installed on ESP-3:
The Control Moment Gyroscope (CMG) and its associated support frame that were on ESP-3 at launch were removed on 13 August 2007. The support frame was placed on ESP-2 and the CMG was installed in the Z1 truss.
US Patent Issued to Intuitive Surgical Operations on Aug. 21 for "Roll Joint and Method for a Surgical Apparatus" (California Inventors)
Aug 27, 2012; ALEXANDRIA, Va., Aug. 27 -- United States Patent no. 8,245,594, issued on Aug. 21, was assigned to Intuitive Surgical Operations...