226
Sensemaking in Safety Critical and Complex Situations
an emergency or a UAS mishaps at some point in their recent past. Therefore, they
evaluated the suitability of each of the IO devices in emergency situations.
The results remained unchanged for display, keyboard, mouse, trackballs, and
touch panel between normal and emergency operation. The joystick functionality
scored the lowest while the rest remained the same. A questioner UAS-N/ E -2Q was
used to clarify operators’ response on joystick functionality. Nearly all operators
Phase II
Distribute
Survey
UAS-N/E-2S
Collect Survey
Results
Clarify Survey
Results
UAS-IO-IQ
Data Analysis
GCS IO Usage
Findings
FIGURE 13.10 Phase II process flow chart.
TABLE 13.3
UAS GCS-CW IO Comparison ( Normal Operation)
Variables
Physical Functionality
Physical
Software
Normal Operation
IO Devices
Shape (%)
(%)
Settings (%) Settings (%)
Device Similarity (%)
Display
100
100
100
100
100.00
Keyboard
100
100
100
100
100.00
Mouse
100
100
100
100
100.00
Joystick
91
79
92
98
90.00
Touch panel
100
100
100
100
100.00
Trackball
100
100
100
100
100.00