Abstract
This paper summarizes an evaluation of commercially available sight peripheral information transparent head-mounted Head-Up Displays (HUD) from the user’s viewpoint during Extra Vehicular Activity (EVA) exploratory tasks in simulated Mars environment. The evaluation is based on experimental use and focuses on the possibilities of safety enhancement, usability regarding visual and voice aid, affordance, usefulness, mission reliability enhancement and HUD health or technical risks. The experiment was performed at the Mars Desert Research Station (MDRS) in Utah. The tested system is composed of two types of commercially available transparent display HUDs (fixed information and head tracking), each providing time, navigation and user heart rate information. The HUDs were used during six one-hour team EVAs, each focused on a navigation tasks and various activities based on the individual EVA goals of the Crew 135 Reliability and Redundancy mission. The experiment data were post-processed/analyzed using video and sound recording by video cameras placed on arms, shoulder, or helmet and embedded in the HUD. Individual feedback is recorded through a modified NASA TLX evaluation system after each EVA, and our conclusions regarding ergonomics are summarized in table form. Hand-held and Head Mounted Displays (HMD) systems are also compared.
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