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High Efficiency Particle Accumulator
in NASA
High Efficiency Particle Air Filter
in NASA
125026125027
Similar to HEPA
AAD - Attitude Anomaly Detector
AAFE - AeroAssist Flight Experiment
AAFM - Acoustic Atomic Force Microscopy
AAR - After Action Review
AARL - Aeronautical and Astronautical Research Laboratory
AAV - Air Admittance Valve
AAV - Aerospace Audio- Visual
View all in NASA