Power Data Grapple Fixture
Encyclopedia
A Power Data Grapple Fixture (PDGF) is a connection fixture used on the International Space Station
(ISS). PDGFs can be "grappled" by the Canadarm2 robotic arm, in order to allow Canadarm2 to manipulate a grappled object, or be controlled by operators based inside the ISS.
The Canadarm2 is self-relocatable and can move end-over-end to reach many parts of the Space Station in an inchworm-like movement. In this movement, it is limited only by the number of Power Data Grapple Fixtures (PDGFs) on the station. PDGFs located around the station provide power, data and video to the arm.
PDGFs are flat in appearance, with a central grapple pin to which the snares of Canadarm2 latch on to. They also feature three curved "ramps" that help to lock Canadarm2 onto the PDGF. In addition, they feature four rectangular-shaped electrical connectors, that either transfer power and data to Canadarm2 from the ISS, or to a grappled payload from Canadarm2.
International Space Station
The International Space Station is a habitable, artificial satellite in low Earth orbit. The ISS follows the Salyut, Almaz, Cosmos, Skylab, and Mir space stations, as the 11th space station launched, not including the Genesis I and II prototypes...
(ISS). PDGFs can be "grappled" by the Canadarm2 robotic arm, in order to allow Canadarm2 to manipulate a grappled object, or be controlled by operators based inside the ISS.
The Canadarm2 is self-relocatable and can move end-over-end to reach many parts of the Space Station in an inchworm-like movement. In this movement, it is limited only by the number of Power Data Grapple Fixtures (PDGFs) on the station. PDGFs located around the station provide power, data and video to the arm.
PDGFs are flat in appearance, with a central grapple pin to which the snares of Canadarm2 latch on to. They also feature three curved "ramps" that help to lock Canadarm2 onto the PDGF. In addition, they feature four rectangular-shaped electrical connectors, that either transfer power and data to Canadarm2 from the ISS, or to a grappled payload from Canadarm2.