Development Of A Non Distributed Flight Reference Symbology For Helmet Mounted Display Use During Off Boresight Viewing
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Development Of A Non Distributed Flight Reference Symbology For Helmet Mounted Display Use During Off Boresight Viewing
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Author :
language : en
Publisher:
Release Date : 1999
Development Of A Non Distributed Flight Reference Symbology For Helmet Mounted Display Use During Off Boresight Viewing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
The primary purpose of the helmet-mounted display (HMD) for the fixed-wing tactical application is to provide target acquisition information to the pilot. The HMD and the information associated with it should first be designed to get the pilot's eyes on a target and to help lead a weapon sensor to a point of interest. In parallel arises both the capability and the need to provide other types of information via the HMD. For instance, ownship status information (including airspeed, altitude, heading, and attitude) can be presented to the pilot regardless of head location or movement. Off-boresight ownship status information may be useful during high off-boresight targeting tasks. Ownship status information includes at least airspeed, altitude, heading, and attitude. It is anticipated that this information will be useful during low-light and degraded visual conditions at viewing angles outside of the cockpit and HUD FOV. The challenge to the designer is to develop symbology that supports all the display information tactical objectives without adversely affecting the primary utility of the HMD. This means the symbology has to be highly usable compared to any associated cost and clutter incurred by its presence. It is not acceptable for HMD ownship status information to cause spatial disorientation or any other significant distraction from the primary objective of the information source. The present paper describes an ownship status symbology set being developed by the Air Force Research Laboratory (AFRL) to enhance information affordance of future operational HMDs. The requirements of a successful HMD ownship status symbology set are understood to be an information source that adds to the operational utility of the HMD by increasing lethality and survivability for day, night, and all weather application.
A Limited Evaluation Of Off Boresight Flight Reference Symbologies For Fixed Wing Aircraft Helmet Mounted Displays
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Author :
language : en
Publisher:
Release Date : 2003
A Limited Evaluation Of Off Boresight Flight Reference Symbologies For Fixed Wing Aircraft Helmet Mounted Displays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
This report presents the results of Project Have SYCLOPS, a limited evaluation of off-boresight flight reference symbologies for fixed wing helmet-mounted displays (HMDs). The overall objective was to compare three HMD flight reference displays containing own- ship status information as aids during operationally representative, off-boresight, air-to-air and air-to-ground piloting tasks. The three symbologies were the Baseline (BL), Baseline Plus (BL+) and Advanced Non-Distributed Flight Reference (ANDFR). The Air Force Research Laboratory, Human Effectiveness Directorate (AFRL/HECV) requested this testing. USAF Test Pilot School (TPS) Class O2B conducted two calibration flights and twelve VISTA flight test sorties at Edwards AFB, CA from 10 Apr 03 to 23 Apr 03, totaling 19.3 hours. Three T-38 support sorties were also flown totaling 3.5 hours. All test objectives were met.
Helmet And Head Mounted Displays Ix
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Author : Clarence E. Rash
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 2004
Helmet And Head Mounted Displays Ix written by Clarence E. Rash and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Technology & Engineering categories.
Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Helmet And Head Mounted Displays
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Author :
language : en
Publisher:
Release Date : 2004
Helmet And Head Mounted Displays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aeronautical instruments categories.
A Comparison Of Hmd Ownship Status Symbology And Frame Of Reference Orientation During Two Aircraft Control Tasks
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Author :
language : en
Publisher:
Release Date : 2002
A Comparison Of Hmd Ownship Status Symbology And Frame Of Reference Orientation During Two Aircraft Control Tasks written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Recent technological advances allow symbology to be displayed on the pilot's visor. A major benefit of this is that the pilots will be able to take this information with them when they look off-boresight. However, when looking off-boresight, the question arises as to what is the best orientation, or frame of reference, for attitude symbology against the horizon (i.e., forward or line-of-sight) in order to maximize interpretation and performance. This study tested five different symbologies (standard HUD, visually coupled acquisition and targeting symbology, arc segmented attitude reference, theta ball, and non-distributed flight reference) of which three have both forward and line-of-sight orientations. The experiment consisted of two distributed tasks, with the pilots performing either facing the monitor or rotated 90 degrees and looking over their shoulder (off-boresight). In the first task, pilots maintained straight and level flight with simulated turbulence. The second task had pilots interpret a static representation of their attitude and respond via a key press, and then the display went live and they had to fly to a new commanded attitude. This second task was similar to a recovery from unusual attitude methodology, except the end state was never straight and level. Instead, a second unknown end-state attitude was commanded by the experiment. Results indicate that performance is letter when the symbology is forward as opposed to line-of-sight referenced. Further, performance was best in both tasks for the non-distributed flight reference. We discuss these results in terms of implications for helmet-mounted display symbology design.
Helmet Mounted Display Symbology And Stabilization Concepts
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Author :
language : en
Publisher:
Release Date : 1995
Helmet Mounted Display Symbology And Stabilization Concepts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Suisun
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Author :
language : en
Publisher:
Release Date : 1995
Suisun written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Marsh ecology categories.
Spatial Disorientation In Aviation
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Author : Fred H. Previc
language : en
Publisher: AIAA (American Institute of Aeronautics & Astronautics)
Release Date : 2004
Spatial Disorientation In Aviation written by Fred H. Previc and has been published by AIAA (American Institute of Aeronautics & Astronautics) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Medical categories.
The first book to cover the entire spectrum of spatial disorientation in flight. This book examines the long history of spatial disorientation in flight, describes the movements of aircraft in mathematical detail, and explains how these movements can conspire to fool human sensory systems. It also examines the visual mechanisms that contribute to perceptions of self motion, describes the contribution of psychological factors to spatial disorientation and defines the types of visual and nonvisual illusions pilots experience in flight.
Helmet Mounted Display Design Guide
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Author :
language : en
Publisher:
Release Date : 1997
Helmet Mounted Display Design Guide written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Helmet mounted displays (HMDs) present flight, navigation, and weapon information in the pilot's line of sight. The HMD was developed to allow the pilot to retain aircraft and weapon information while looking off boresight. This document reviews current state of the art in HMDs and presents a design guide for the HMD engineer in identifying several critical HMD issues: symbol stabilization, inadequate definitions, undefined symbol drive laws, helmet considerations, and field of view (FOV) vs. resolution tradeoff requirements. In particular, display latency is a key issue for HMDs. In addition to requiring further experimental studies, it impacts the definition and control law issues. Symbol stabilization is also critical. In the case of the Apache helicopter, the lack of compensation for pilot head motion creates excessive workload during hovering and nap of the earth (NOE) flight. This translates into excessive training requirements. There is no agreed upon set of definitions or descriptions for how HMD symbols are driven to compensate for pilot head motion. A set of definitions is proposed to address this. There are several specific areas where simulation and flight experiments are needed: development of hover and NOE symbologies which compensate for pilot head movement; display latency and sampling, and the tradeoff between FOV, sensor resolution and symbology.
Helmet And Head Mounted Displays And Symbology Design Requirements
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Author :
language : en
Publisher:
Release Date : 1995
Helmet And Head Mounted Displays And Symbology Design Requirements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautical instruments categories.