Druck ADTS 505 User Manual
3.7.4 Mach Test and Constant Mach
To go to 0.45 Mach, proceed as follows:
Press LEAK MEASURE/CONTROL to enter Control Mode.
Press SPEED/Qc then RATE to display rate of change of airspeed.
The preset rate of speed is 300 kts/min.
Enter an aim of 0.45.
Wait for the Mach aim to be achieved.
The system keeps the Mach aim constant by controlling/changing Pt (pitot) leaving Ps
(static) at a constant value.
On completion of testing, select GROUND and wait for the `Safe at Ground' message to be displayed,
see 3.7.8., refit the pitot and static blanking caps.
If the altitude Ps (static) changes, the system automatically adjusts Pt (pitot) to keep the Mach
Use the nudge facility for small changes to the Mach aim value.
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K0260 Issue No. 8