Today Grant O’Brien assembled the ZLS gravimeter.
I merely set up the GPS.
The gravity meters use a gimbal to stabilize motion of the platform in three axes: roll, which refers to the longitudinal axis of the plane; pitch, the lateral axis; and yaw, the vertical axis. The gimbal is a fundamental component of airborne and marine gravimeters, as acceleration of the aircraft will affect gravity values. The zero-length spring (ZLS) gravimeter receives its name from the concept that given the tension of the spring is proportional to the length of spring, spring length would contract to zero in the absence of external forces. Primarily used for marine surveys, the accelerometers were not designed to account for intense accelerations that occur on an aircraft, such as taking off, turning sharply to switch lines, or landing. Flight line data collection begins after effects of aircraft acceleration are moderated and the plane aligns with the survey line.
We were shuttled back to Mactown after work on a Delta. Our top speed — maybe 15 mph?