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Helicopter Terrain Navigation Training Using A Wide Field Of View Desktop Virtual Environment

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Helicopter Terrain Navigation Training Using A Wide Field Of View Desktop Virtual Environment

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Author : Joseph Sullivan
language : en
Publisher:
Release Date : 1998-09-01

Helicopter Terrain Navigation Training Using A Wide Field Of View Desktop Virtual Environment written by Joseph Sullivan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-09-01 with categories.

Helicopter terrain navigation is a unique task; training for this task presents unique challenges. Current training methods rely on dated technology and inadequately prepare pilots for real world missions. Improved training specifically tailored to address the unique needs of the helicopter community that capitalizes on recent improvements in desktop virtual environment (VE) technology could substantially improve the training process and reduce training costs. Based on the input of subject matter experts in current helicopter terrain navigation training techniques and VE technology, such a system was developed and tested on student pilots performing real world tasks. A desktop VE that presented a simple to control and learn, interactive fly though of a terrain model was used to augment conventional training at Helicopter Antisubmarine Squadron Ten (HS-1O). Results indicate that flight time for students that received VE training was more productive than for students that received conventional training. This work justifies the next logical step; fielding a system on a long term basis as a squadron asset. This system would provide improved training for the helicopter community and an invaluable source of research data for the Naval Postgraduate School.

Helicopter Urban Navigation Training Using Virtual Environments

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Author : George T. Wright
language : en
Publisher:
Release Date : 2000

Helicopter Urban Navigation Training Using Virtual Environments written by George T. Wright and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

Helicopter missions are never defined as "...successful navigation to and return from a location." Navigation, in and of itself, is not the mission - it is, however, a skill that all helicopter pilots are expected to master in order to function as pilots. Navigation is a means to an end. Helicopter operations, being inherently expensive and unforgiving of mistakes, are prime candidates for such innovative training techniques as virtual (3-D) fly- throughs. This thesis, as a logical extension of previous research, seeks Out ways to enhance current training methods for urban helicopter navigation using state-of-the-art-technology. Using empirical data from pilot surveys and controlled experiments, principles can be formulated to determine the level of computer graphics fidelity necessary for helicopter crews to conduct a virtual flight in an urban setting that is a credible, effective tool in preparation of an actual flight. This research does not seek a replacement method of training helicopter terrain navigation - pilots must still be taught the fundamental skills of map interpretation and terrain association using conventional training techniques. However, it is the intent of this research to explore methods of enhancing and supplementing site - specific helicopter navigation training through the transfer of spatial knowledge from the virtual world to real-world applications.

International Aerospace Abstracts

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Author :
language : en
Publisher:
Release Date : 1999

International Aerospace Abstracts 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 Aeronautics categories.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports 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 Aeronautics categories.

Government Reports Annual Index

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Author :
language : en
Publisher:
Release Date : 199?

Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 199? with categories.

Quad Rotorcraft Control

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Author : Luis Rodolfo García Carrillo
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-12

Quad Rotorcraft Control written by Luis Rodolfo García Carrillo and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-12 with Technology & Engineering categories.

Quad Rotorcraft Control develops original control methods for the navigation and hovering flight of an autonomous mini-quad-rotor robotic helicopter. These methods use an imaging system and a combination of inertial and altitude sensors to localize and guide the movement of the unmanned aerial vehicle relative to its immediate environment. The history, classification and applications of UAVs are introduced, followed by a description of modelling techniques for quad-rotors and the experimental platform itself. A control strategy for the improvement of attitude stabilization in quad-rotors is then proposed and tested in real-time experiments. The strategy, based on the use low-cost components and with experimentally-established robustness, avoids drift in the UAV’s angular position by the addition of an internal control loop to each electronic speed controller ensuring that, during hovering flight, all four motors turn at almost the same speed. The quad-rotor’s Euler angles being very close to the origin, other sensors like GPS or image-sensing equipment can be incorporated to perform autonomous positioning or trajectory-tracking tasks. Two vision-based strategies, each designed to deal with a specific kind of mission, are introduced and separately tested. The first stabilizes the quad-rotor over a landing pad on the ground; it extracts the 3-dimensional position using homography estimation and derives translational velocity by optical flow calculation. The second combines colour-extraction and line-detection algorithms to control the quad-rotor’s 3-dimensional position and achieves forward velocity regulation during a road-following task. In order to estimate the translational-dynamical characteristics of the quad-rotor (relative position and translational velocity) as they evolve within a building or other unstructured, GPS-deprived environment, imaging, inertial and altitude sensors are combined in a state observer. The text give the reader a current view of the problems encountered in UAV control, specifically those relating to quad-rotor flying machines and it will interest researchers and graduate students working in that field. The vision-based control strategies presented help the reader to a better understanding of how an imaging system can be used to obtain the information required for performance of the hovering and navigation tasks ubiquitous in rotored UAV operation.

Popular Science

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Author :
language : en
Publisher:
Release Date : 2004-09

Popular Science written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-09 with categories.

Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.