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Auxiliary Power and Thrust Unit
in NASA
Aerodynamic and Propulsion Test Unit
in NASA
121352121351
Similar to APTU
ABS - After Body Section
ABS - Air Breathing System
ABS - Air Base Supply
ABT - Approximate Burn Time
ABU - Analog Back- Up
ABU - After Body Unit
ABUP - Auxiliary Back- Up Plate
View all in NASA