defeated by selecting the "Draw Axis:" line and using the RIGHT or LEFT arrow key to toggle to NO.
Pressing DO will advance to the polar chart display and pressing QUIT will return to the Display Selection
Menu. Once the polar display is visible, the vibration data is displayed by flight ID in both tabular and polar
format. The data displayed on the polar display is highlighted in the table. Change the graphed data using
the UP and DOWN arrow keys. This will change the points highlighted in the table and the points graphed
Press QUIT to return to the Display Selection Menu.
Enter the number of test to show on the
polar plot at one time.
No of test:
[UP] & [DOWN]
[LEFT] & [RIGHT]
[DO] Save & Exit
A + B 1R
FLOWN 09:29:00 1 AUG 01
Figure 9. Polar Trend Flights Display
Using Bar Displays
Bar displays are used to display selected vibration amplitudes. Bar displays are useful when a visual display
of relative data is helpful to the user. An example of this would be absorber tuning. Absorber tuning typically
requires the collection of multiple data points on different rotor RPMs. This data is usually collected at the
same basic flight condition and time. A complete Flight bar display would be very helpful in this case. The
following section describes the two different bar displays.
1. Complete Flight Bar Display. The Complete Flight bar display, figure 10, shows vibration amplitude data
collected in a single Flight Plan. The display labels the Test State along the horizontal axis and the
vibration amplitude along the vertical axis. The screen has the capability to display up to five Test States at
one time. Use the LEFT and RIGHT arrow keys to move the screen left and right when more than five Test
States are present on the bar graph F3 provides a tabular display of the graphed data to return to the
Display Selection Menu press QUIT.
Figure 10. Complete Flight Bar Display
14:19 01 AUG 01