Tactile cueing effects on performance in simulated aerial combat with high acceleration.
BACKGROUND
Recent evidence indicates that vibrotactile displays can potentially reduce the risk of sensory and cognitive overload. Before these displays can be introduced in super agile aircraft, it must be ascertained that vibratory stimuli can be sensed and interpreted by pilots subjected to high G loads.


METHODS
Each of 9 pilots intercepted 32 targets in the Swedish Dynamic Flight Simulator. Targets were indicated on simulated standard Gripen visual displays. In addition, in half of the trials target direction was also displayed on a 60-element tactile torso display. Performance measures and subjective ratings were recorded.


RESULTS
Each pilot pulled G peaks above +8 Gz. With tactile cueing present, mean reaction time was reduced from 1458 ms (SE = 54) to 1245 ms (SE = 88). Mean total chase time for targets that popped up behind the pilot's aircraft was reduced from 13 s (SE = 0.45) to 12 s (SE = 0.41). Pilots rated the tactile display favorably over the visual displays at target pop-up on the easiness of detecting a threat presence and on the clarity of initial position of the threats.


CONCLUSIONS
This study is the first to show that tactile display information is perceivable and useful in hypergravity (up to +9 Gz). The results show that the tactile display can capture attention at threat pop-up and improve threat awareness for threats in the back, even in the presence of high-end visual displays. It is expected that the added value of tactile displays may further increase after formal training and in situations of unexpected target pop-up.
van Erp
Jan B F
JB
Department Human Interfaces, TNO Human Factors, P.O. Box 23, 3769 ZG Soesterberg, The Netherlands. Jan.vanerp@tno.nl
Eriksson
Lars
L
Levin
Britta
B
Carlander
Otto
O
Veltman
J A
JA
Vos
Wouter K
WK
D000054:Acceleration; D000328:Adult; D001359:Aviation / Q000295:instrumentation*; D003071:Cognition; D003198:Computer Simulation; D003463:Cues; D003626:Data Display; D006112:Gravitation; D006801:Humans; D008297:Male; D008328:Man-Machine Systems; D008875:Middle Aged; D011930:Reaction Time; D013647:Task Performance and Analysis; D014110:Touch; D014584:User-Computer Interface