This video montage shows scenes from the test deployments of both GPM Core satellite solar arrays in a clean room at NASA's Goddard Space Flight Center in Greenbelt, Md., in June 2013.
(ambient audio only)
This and other similar tests will verify the deployment function of the GPM Core Observatory solar arrays in ambient condition. Data such as deployment time, hinge forces, and system stiffness will be gathered and reviewed for requirement compliance. The qualification unit was assembled with flight and non-flight components. The flight components will be removed and integrated with the flight unit after qualification testing.
The small squares are 59 accelerometers that measure the movement of the array.
The solar arrays provide all the electrical energy for the satellite, and must survive flying in Earth's thin upper atmosphere at an altitude of 407 km (253 miles), where they will be subjected to small drag forces and exposure to corrosive atomic oxygen.