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MMS_Instruments_Suite

-                      v26
+                      v27
 The MMS instrumentation consists of three major systems:
 An air motion sensing system to measure the velocity of the air with respect to the aircraft, i.e., the true air speed.
 An inertial navigation system to measure the velocity of the aircraft with respect to the earth, i.e., the ground speed.
 A data acquisition system to sample, process and record the measured quantities.
+ * An air motion sensing system to measure the velocity of the air with respect to the aircraft, i.e., the true air speed.
+ * An inertial navigation system to measure the velocity of the aircraft with respect to the earth, i.e., the ground speed.
+ * A data acquisition system to sample, process and record the measured quantities.
 The air motion sensing system consists of sensors, which measure temperature, pressures, and airflow angles (angle of attack and yaw angle). The Litton LN-100G Embedded GPS Inertial Navigation System (INS) provides the aircraft attitude, position, velocity, and acceleration data. On the DC-8, the Trimble TANS Vector provides secondary attitude and navigation data. The TANS Vector utilizes the GPS carrier phase shift between multiple antennas to derive independent aircraft attitude. The Data Acquisition System samples the independent variables simultaneously and provides control over all system hardware.