Accession Number : ADA259532


Title :   Human Performance Under High G Environments: A Comparison of Upright and Reclined Seat Configurations


Descriptive Note : Final rept.


Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIR VEHICLE AND CREW SYSTEMS TECHNOLOGY DEPT


Personal Author(s) : Deaton, John E ; Hitchcock, Edward M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259532.pdf


Report Date : 15 Oct 1991


Pagination or Media Count : 27


Abstract : The present study investigated human cognitive performance under high G in an upright seat and two reclined seats (PALE and Tilt-back). Subjects were required to perform a perceptual/motor and a classification task both separately and concurrently. Data were gathered prior to G-onset, during varying levels of acceleration, and post-G. Results indicated that neither of the reclined seats were superior to the upright seat at high G levels. Perceptual/motor data revealed that the PALE seat has an advantage in post-G recovery, while the upright seat maintains better performance during acceleration for this measure. These results indicate that the physiological benefits of reclination do not easily translate into cognitive performance increments. Before a definitive study can evaluate the contributions reclination may make to pilot performance under severe levels of G-force, engineering issues surrounding the mechanization of reclined seating needs to be resolved


Descriptors :   *PERFORMANCE(HUMAN) , *COGNITION , *HUMAN FACTORS ENGINEERING , *PILOT STUDIES , *AIRCRAFT SEATS , *GRAVITY , *MECHANICAL ENGINEERING , *ACCELERATION TOLERANCE , *PILOT SEATS , *MECHANICAL WORKING , *CENTRIFUGAL FORCE , RECOVERY , CLASSIFICATION , ENGINEERING , MECHANIZATION , BENEFITS , PILOTS , HUMANS


Subject Categories : Aircraft
      Psychology
      Stress Physiology
      Logistics, Military Facilities and Supplies
      Human Factors Engineering & Man Machine System


Distribution Statement : APPROVED FOR PUBLIC RELEASE