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=== SPI === | === SPI === | ||
[[File:Shuttle avionics meds spi.jpg| | [[File:Shuttle avionics meds spi.jpg|600px|SPI MEDS display of the Space Shuttle]] | ||
The surface position indicator display shows the movement of the airfoils during the aerodynamical part of the flight. It can for instance be used to check how close, dependent to trim, the elevons are to saturation or how stable the spacecraft is. | The surface position indicator display shows the movement of the airfoils during the aerodynamical part of the flight. It can for instance be used to check how close, dependent to trim, the elevons are to saturation or how stable the spacecraft is. | ||
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