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Analysis of Head Motion in Rotary-Wing Flight Using Various Helmet- Mounted Display Configurations (Part I. Azimuth)

Ryan J. RostadClarence E. RashJoshua K. BrileyJohn C. MoraJohn S. Crowley

出版	Storming Media, 2003-04
主題	Medical / AnatomyTechnology & Engineering / Aeronautics & Astronautics
ISBN	14235038649781423503866
URL	http://books.google.com.hk/books?id=D5cOMQAACAAJ&hl=&source=gbs_api

註釋In spite of an immense increase in interest in helmet-mounted displays (HMDs) over the past two decades, there have been few studies on head motion while using HMDs in operational flight Rotary-wing flights conducted using a number of HMD configurations have resulted in a head position database that will be useful in filling this void. Azimuth head position data have been analyzed for a slalom flight maneuver for four visual environments: good visual environment (daytime, unaided), night vision goggles, HMD with thermal imagery, and HMD with thermal imagery and symbology. The major thread throughout these analyses was that the pilots exhibited greatest head motion for the NVG environment. The two HMD configurations (TIO and RWS) were very similar in exhibited head motion, not indicating any significant differences between the TIO FLIR imagery alone and the RWS FLIR imagery plus symbology. Based on this analysis of the head azimuth position data, it is concluded that the interquartile range IQR (or some other lQR) dispersion statistic is a good discriminator between the head position distributions for the four visual environments. For all subjects, the IQR for the night vision goggle visual environment was larger than for the other three visual environments. Likewise, the IQR for good visual environment was always the second largest. The IQR values for thermal imaging only and rotary wing symbology, the most closely related visual environments, vie for third and fourth ranking.