Helmet-Mounted Displays: Design Issues for Rotary-Wing Aircraft

Fitting Issues Survey for the AH-64 Integrated Helmet and Display Sighting System

“…Any compromise m the initial hehnet fitting, which is most often of an anthropometric cause, will result in a reduction of this fiiU FOV. This problem is well documented (Rash, 2000). Of the respondents m tiiis shidy, only approximately one half (55%) indicated that were able to thieve a fiill FOV.…”

“…Noise levels found in military helicopters exceed noise exposure limits established within the Department of Defense and the Department of Army (Rash, 2000). The wearing of double protection, in the form of some type of earplug in combination of the helmet, is both recommended and standard procedure for all aviators.…”

“…However, achieving this fiill FOV has been a long-standing problem with the IHADSS (Rash, 2000). Of the respondents, 55% indicated that they were able to achieve a fliU FOV when flying.…”

Effects of Head Up Display Symbology Lag on Recovery from Inadvertent Instrument Meteorological Conditions: Performance Costs

“…New display symbology is currently being researched to aid in instrument landings within desert brownout conditions (Walker, 2003). Additionally, it has been suggested that future helmet-mounted systems may employ full-immersion virtual reality displays (Rash, 2001). Potential performance decrements produced by high processing demands and suboptimal refresh rates must be investigated during the design phase to avoid adverse consequences that may result after fielding.…”

Design of monocular head-mounted displays, with a case study on fire-fighting

“…HMDs are classified into three ocular types: monocular -for single eye viewing, biocular -for both eyes, and binocular -for stereovision by presenting a slightly different image perspective to each eye [1]. HMDs were first developed in the 1960s by university researchers [2][3][4]. More recently, inexpensive flat panel microdisplays have enabled many applications for military pilots and soldiers, virtual reality, entertainment, wearable computing, advanced surgery, auto mechanics, and first responders.…”