Photovoltaic mounting system at the same angle as the latitude of array's location to maximize the annual energy yield of module. For example, rooftop PV module at the tropics provides highest annual energy yield when inclination of panel surface is close to horizontal direction. A study in the tropics showed that the orientation of low-slope rooftop PV has negligible impact on annual energy yield, but in the case of PV external sunshade applications, east façade and panel slope of 30–40° are the most suitable location and inclination. Photovoltaic mounting system Photovoltaic mounting systems (also called solar module racking) are used to fix solar
Mir Docking Module November, leaving STS-71 as the only Shuttle-"Mir" docking mission requiring "Kristall" to be relocated. In addition to simplifying space shuttle docking missions, "Mir"'s docking module was also used as a carrier for two new photovoltaic arrays, mounted to the module in boxes, which were later deployed on "Kvant"-1 during spacewalks. The first, the "Mir" Cooperative Solar Array, was jointly designed by NASA and Russia in order to test designs for the future International Space Station. The array was 42 m² in area, and provided 6.7 kW of power when installed on the station during expedition EO-21 in 1996. The array