Download or read book Analysis of Head Motion in Rotary Wing Flight Using Various Helmet Mounted Display Configurations Part 3 Roll written by Jessica A. Stelle and published by . This book was released on 2003-08 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 flight conducted using a number of HMD configurations has resulted in a head position database that will be useful in filling this void. Various analysis techniques have been applied to investigate characteristics of roll (tilt) head position distributions 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.

Download or read book Analysis of Head Motion in Rotary Wing Flight Using Various Helmet Mounted Display Configurations Part 3 Roll written by and published by . This book was released on 2003 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 flight conducted using a number of HMD configurations has resulted in a head position database that will be useful in filling this void. Various analysis techniques have been applied to investigate characteristics of roll (tilt) head position distributions 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.

Download or read book Analysis of Head Motion in Rotary Wing Flight Using Various Helmet Mounted Display Configurations Part II Elevation written by Ryan J. Rostad and published by . This book was released on 2003-05-01 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. Various analysis techniques have been applied to investigate characteristics of elevation head position distributions 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.

Download or read book Analysis of Head Motion in Rotary Wing Flight Using Various Helmet Mounted Display Configurations Part II Elevation written by and published by . This book was released on 2003 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 flight conducted using a number of HMD configurations has resulted in a head position database that will be useful in filling this void. Various analysis techniques have been applied to investigate characteristics of roll (tilt) head position distributions 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.

Download or read book Helmet Mounted Displays written by Clarence E. Rash and published by SPIE Press. This book was released on 2000 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The incorporation of technology into aviation has been exponential. Advancements in microelectronics, stealth technology, engine design, and electronic sensors and displays have converted simple aircraft into formidable flying machines. In this book, recognised experts in aviation helmet-mounted displays (HMDs) summarise 25 years of knowledge and experience in the area of HMD visual, acoustic, and biodynamic performance, and user interface issues such as sizing, fitting, and emergency egress.

Download or read book Selective Factors Affecting Rotary Wing Aviator Performance with Symbology Superimposed on Night Vision Goggles written by John W. Ruffner and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Helmet and Head mounted Displays written by and published by . This book was released on 2002 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment Methodology for Integrated Helmet and Display Systems in Rotary wing Aircraft written by Clarence E. Rash and published by . This book was released on 1996 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Issues for Helmet Mounted Display Systems for Rotary Wing Aviation written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the l970s, the trend in Army aviation has been to rely on helmet-mounted displays (HMDs) to provide the aircrew with pilotage imagery, flight information, and fire control imagery and symbology. This paper is intended to serve as both a checklist and a guide for designers of future integrated helmet and display systems for rotary-wing aircraft. In this paper: 1) salient performance parameters of such systems are identified; 2) recommendations for values of these parameters are suggested, based on past research and the opinions of subject matter experts; 3) an analysis of potential health and safety hazards is provided; 4) a human factors engineering assessment (HFEA) is provided; and 5)lessons learned from previously fielded U.S. Army HMD systems are summarized. However, this paper is not a cookbook for building an integrated helmet and display system.

Download or read book Helmet Mounted Displays written by Clarence E. Rash and published by . This book was released on 1999 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Helicopter Simulator Assessment of Pilot Head Movement During Various Phases of Flight written by and published by . This book was released on 1997 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The opto-kinetic cervico reflex (OKCR) is a recently hypothesized visually driven reflex that serves to stabilize the image of the external horizon on the retina during high performance aircraft roll maneuvers. Although anecdotally reported as occurring, head tilt during helicopter flight has not been formally studied. Such research is required to determine the full impact and significance it may have on a rotary-wing aviator's flying performance. The aim of this study was to investigate the relationship between horizon position and perception of orientation, and thus generate vital information to assess whether this reflex plays an important role in spatial disorientation. Twenty volunteer pilots participated in a UH-60 flight simulator study to examine the effects of this reflex. The results confirm that the OKCR occurs during simulated helicopter flight, both with and without night vision goggles. As with previous studies, head roll increased during flight under visual meteorological conditions in relation to increasing aircraft roll angle up to a maximum sustainable level and then remained constant. Head roll did not occur during flight under instrument meteorological conditions. Various aspects that impact rotary-wing operations are discussed, and recommendations made for future research.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Helicopter Simulator Assessment of Pilot Head Movement During Various Phases of Flight written by Malcolm G. Braithwaite and published by . This book was released on 1997-07-01 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The opto-kinetic cervico reflex (OKCR) is a recently hypothesized visually driven reflex that serves to stabilize the image of the external horizon on the retina during high performance aircraft roll maneuvers. Although anecdotally reported as occurring, head tilt during helicopter flight has not been formally studied. Such research is required to determine the full impact and significance it may have on a rotary-wing aviator's flying performance. The aim of this study was to investigate the relationship between horizon position and perception of orientation, and thus generate vital information to assess whether this reflex plays an important role in spatial disorientation. Twenty volunteer pilots participated in a UH-60 flight simulator study to examine the effects of this reflex. The results confirm that the OKCR occurs during simulated helicopter flight, both with and without night vision goggles. As with previous studies, head roll increased during flight under visual meteorological conditions in relation to increasing aircraft roll angle up to a maximum sustainable level and then remained constant. Head roll did not occur during flight under instrument meteorological conditions. Various aspects that impact rotary-wing operations are discussed, and recommendations made for future research.

Download or read book An Analysis of Eye Movements with Helmet Mounted Displays written by Air Force Air Force Institute of Technology and published by CreateSpace. This book was released on 2015-04-04 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helmet or Head-Mounted Displays (HMD) applications have expanded to include a range from advanced military cockpits to consumer glasses. However, users have documented loss of legibility while undergoing vibration. Recent research indicates that undesirable eye movement is related to the vibration frequency a user experiences. In vibrating environments, two competing eye reflexes likely contribute to eye movements. The Vestibulo-ocular Reflex responds to motion sensed in the otoliths while the pursuit reflex is driven by the visual system to maintain the desired image on the fovea. This study attempts to isolate undesirable eye motions that occur while using a HMD by participants completing simple visual tasks while experiencing vertical vibration at frequencies between 0 and 10 Hz. Data collected on participants head and helmet movements, vibration frequency, acceleration level, and visual task are compared to eye movements to develop a method to understand the source of the unintended eye movements. Through the use of Electro-Oculography (EOG) eye movements were largest when a 4 Hz vibration frequency was applied, and are significantly different from the EOG signal at 2, 8 and 10 Hz. Stepwise regression indicated that head pitch acceleration and helmet slippage pitch acceleration were correlated with EOG values.

Download or read book Issues in Design and Safety of Helmet Mounted Displays Results of a Rotary Wing Pilot Survey written by and published by . This book was released on 2004 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: An internet-based questionnaire study developed by researchers at the U.S. Army Aeromedical Research Laboratory (USAARL), Fort Rucker, Alabama, was conducted to address issues in design of the Aviator's Night Vision Imaging System Head-Up Display (ANVIS/HUD) and Optical Display Assembly (ODA) systems. Survey responses analyzed included those regarding structural and display design, as well as those addressing issues concerning flight safety. Survey participants included active duty, reserve, and National Guard, as well as Department of the Army civilian pilots, from units around the world responding to the questionnaire between January and July 2002. Data abstracted from open-ended questionnaire results were transformed into binary variables for analytical purposes. Approximately 32 percent of HUD users and 44 percent of ODA users indicated they would not use their HUD or ODA if given the choice. However, the results gathered are essential for directing further testing and evaluation of proposed modifications.

Download or read book Assessment Methodology for Integrated Helmet and Display Systems in Rotary wing Aircraft written by and published by . This book was released on 1996 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rotary Wing Aerodynamics written by W. Z. Stepniewski and published by Courier Corporation. This book was released on 2013-04-22 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: DIVClear, concise text covers aerodynamic phenomena of the rotor and offers guidelines for helicopter performance evaluation. Originally prepared for NASA. Prefaces. New Indexes. 10 black-and-white photos. 537 figures. /div