DRAC means SOI
Solar Oscillations Investigation/ MDI
Michelson Doppler Imager Data Reduction and Analysis Center in
NASA
Similar to DRAC
ABU - Analog Back- Up
ABU - After Body Unit
ABUP - Auxiliary Back- Up Plate
ABV - Above
ABV - Air Bubble Vehicle
AC - Aerodynamic Center
AC - Comptroller Office
View all in NASA