DRAC means SOI
Solar Oscillations Investigation/ MDI
Michelson Doppler Imager Data Reduction and Analysis Center in
NASA
Similar to DRAC
A/A - Air to Air
A/C - Aircraft
A/C - Associate Contractor
A/C - Air Conditioning
A/D - Analog-to-Digital
A/E - Architectural and Engineering
A/E - Activity Elements
View all in NASA