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| Definition | : | Powered Descent Initiation |
| Category | : | Academic & Science » Astronomy & Space Science |
| Country/ Region |
: | Worldwide
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| Popularity | : |
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| Type | : |
Initialism
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Powered Descent Initiation (PDI) is a maneuver used during spacecraft landings, particularly on celestial bodies without an atmosphere like the Moon or Mars.
PDI signifies the moment when the spacecraft's engines ignite to slow down and begin its controlled descent toward the landing surface.
The full form of PDI is Powered Descent Initiation
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