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What does PPU stand for?

PPU stands for Power Processing Unit (solar electric propulsion)

This definition appears very frequently and is found in the following Acronym Finder categories:

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We have 74 other meanings of PPU in our Acronym Attic

Samples in periodicals archive:

The system, or any electric propulsion system, consists of four major components: a computer for controlling and monitoring system performance; solar concentrator arrays; a power processing unit for converting power from the solar arrays to the correct voltages for the engine; and the thruster, or engine, itself.