Download or read book Helicopter Flight Simulation Motion Platform Requirements written by Jeffery Allyn Schroeder and published by . This book was released on 1998 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Helicopter Flight Simulation Motion Platform Requirements written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: To determine motion fidelity requirements, a series of piloted simulations was performed. Several key results were found. First, lateral and vertical translational platform cues had significant effects on fidelity. Their presence improved performance and reduced pilot workload. Second, yaw and roll rotational platform cues were not as important as the translational platform cues. In particular, the yaw rotational motion platform cue did not appear at all useful in improving performance or reducing workload. Third, when the lateral translational platform cue was combined with visual yaw rotational cues, pilots believed the platform was rotating when it was not. Thus, simulator systems can be made more efficient by proper combination of platform and visual cues. Fourth, motion fidelity specifications were revised that now provide simulator users with a better prediction of motion fidelity based upon the frequency responses of their motion control laws. Fifth, vertical platform motion affected pilot estimates of steady-state altitude during altitude repositioning. Finally, the combined results led to a general method for configuring helicopter motion systems and for developing simulator tasks that more likely represent actual flight. The overall results can serve as a guide to future simulator designers and to today's operators.Schroeder, Jeffery AllynAmes Research CenterFLIGHT SIMULATION; HELICOPTERS; ESTIMATES; VERTICAL MOTION; VISUAL STIMULI; YAW; CONTROL THEORY; CUES; PREDICTIONS; ROTATION; STEADY STATE; WORKLOADS (PSYCHOPHYSIOLOGY)

Download or read book Visual and Motion Cueing in Helicopter Simulation written by Richard S. Bray and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles and Practice of Aviation Psychology written by Pamela S. Tsang and published by CRC Press. This book was released on 2002-08-01 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering field history and discussing actual modern-day pilot actions and tasks, the editors of this volume have integrated contributions from leaders in aviation to present psychological principles and research pertinent to the interface between a pilot and the cockpit. The book addresses the pilot‘s cognitive demands, capabilities, and limitations, which have important implications for operator selection and training as well as display/control designs in the cockpit. It emphasizes scientific methods of achieving this understanding and implies that theories and principles of human behavior are shaped and improved by practical problems and applied studies.

Download or read book The Role of the Research Simulator in the Systems Development of Rotorcraft written by and published by . This book was released on 1981 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last 20 years, flight simulators have become widely accepted as training tools. Moreover, research simulators have been used extensively by the fixed-wind industry in the design, testing, and certification of new aircraft. The rotorcraft industry, however, has been slow to use man-in-the-loop simulation to solve its design problems, primarily because of the difficulty of modeling complex rotorcraft for realtime simulation and because of the need for a wide-angle visual system for low-level flight. A joint U.S. Army and NASA program has been initiated to provide this simulation capability for exploitation by both government and industry. This paper, a status report of that program, discusses the potential application of the research simulator to future rotorcraft systems design, development, product improvement evaluations, and safety analysis. (Author).

Download or read book Pilot vehicle Model Analysis of Visual and Motion Cue Requirements in Flight Simulation written by Sheldon Baron and published by . This book was released on 1980 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Investigation of Motion Requirements for the Simulation of Helicopter Hover Tasks written by Russell V. Parrish and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measuring modelling and minimizing perceived motion incongruence for vehicle motion simulation written by Diane Cleij and published by Logos Verlag Berlin GmbH. This book was released on 2020-01-28 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans always wanted to go faster and higher than their own legs could carry them. This led them to invent numerous types of vehicles to move fast over land, water and air. As training how to handle such vehicles and testing new developments can be dangerous and costly, vehicle motion simulators were invented. Motion-based simulators in particular, combine visual and physical motion cues to provide occupants with a feeling of being in the real vehicle. While visual cues are generally not limited in amplitude, physical cues certainly are, due to the limited simulator motion space. A motion cueing algorithm (MCA) is used to map the vehicle motions onto the simulator motion space. This mapping inherently creates mismatches between the visual and physical motion cues. Due to imperfections in the human perceptual system, not all visual/physical cueing mismatches are perceived. However, if a mismatch is perceived, it can impair the simulation realism and even cause simulator sickness. For MCA design, a good understanding of when mismatches are perceived, and ways to prevent these from occurring, are therefore essential. In this thesis a data-driven approach, using continuous subjective measures of the time-varying Perceived Motion Incongruence (PMI), is adopted. PMI in this case refers to the effect that perceived mismatches between visual and physical motion cues have on the resulting simulator realism. The main goal of this thesis was to develop an MCA-independent off-line prediction method for time-varying PMI during vehicle motion simulation, with the aim of improving motion cueing quality. To this end, a complete roadmap, describing how to measure and model PMI and how to apply such models to predict and minimize PMI in motion simulations is presented. Results from several human-in-the-loop experiments are used to demonstrate the potential of this novel approach.

Download or read book Modeling the OH 6A Using FLIGHTLAB and Helicopter Simulator Considerations written by Gregory A. Ouellette and published by . This book was released on 2002-03-01 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent technological advancements in robust computer hardware, simulation modeling technology, newer electronic actuators and advanced computer graphics have enabled manufacturers to develop low cost, affordable helicopter flight simulators. This thesis presents detailed information on the U.S. Army Hughes OH-6A Cayuse" helicopter together with a comprehensive model of the aircraft suitable for high fidelity simulator modeling. Fidelity of the model is obtained through use of commercial off-the- shelf software that is incorporated in a low-cost flight simulator, which is marketed as FLIGHTLAB. The FLIGHTLAB development system facilitates rapid design and analysis of a high fidelity helicopter model using non-linear dynamic modeling techniques. The simulator model of the Hughes OH-6A helicopter is presented and its fidelity is compared to actual fight test data conducted at the U.S. Naval Test Pilot School in Patuxent River, MD. Advancements in electromagnetic actuators and visual rendering systems are also presented to provide insight into the direction simulator technology is progressing.

Download or read book Control Theoretic Models of Feedforward in Manual Control written by Frank M. Drop and published by Logos Verlag Berlin GmbH. This book was released on 2016-11-03 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding how humans control a vehicle (cars, aircraft, bicycles, etc.) enables engineers to design faster, safer, more comfortable, more energy efficient, more versatile, and thus better vehicles. In a typical control task, the Human Controller (HC) gives control inputs to a vehicle such that it follows a particular reference path (e.g., the road) accurately. The HC is simultaneously required to attenuate the effect of disturbances (e.g., turbulence) perturbing the intended path of the vehicle. To do so, the HC can use a control organization that resembles a closed-loop feedback controller, a feedforward controller, or a combination of both. Previous research has shown that a purely closed-loop feedback control organization is observed only in specific control tasks, that do not resemble realistic control tasks, in which the information presented to the human is very limited. In realistic tasks, a feedforward control strategy is to be expected; yet, almost all previously available HC models describe the human as a pure feedback controller lacking the important feedforward response. Therefore, the goal of the research described in this thesis was to obtain a fundamental understanding of feedforward in human manual control. First, a novel system identification method was developed, which was necessary to identify human control dynamics in control tasks involving realistic reference signals. Second, the novel identification method was used to investigate three important aspects of feedforward through human-in-the-loop experiments which resulted in a control-theoretical model of feedforward in manual control. The central element of the feedforward model is the inverse of the vehicle dynamics, equal to the theoretically ideal feedforward dynamics. However, it was also found that the HC is not able to apply a feedforward response with these ideal dynamics, and that limitations in the perception, cognition, and action loop need to be modeled by additional model elements: a gain, a time delay, and a low-pass filter. Overall, the thesis demonstrated that feedforward is indeed an essential part of human manual control behavior and should be accounted for in many human-machine applications.

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 Vehicle Simulation written by Alfred T. Lee and published by CRC Press. This book was released on 2017-11-13 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the problem of fidelity in the design of virtual environments with specific reference to the design of vehicle simulators. The default design goal has been on the physical replication of a given real-world environment and, in the case of vehicles, the specific appearance and function of vehicle components. This book discusses that perceptual, rather than physical, fidelity of a virtual environment, should be the design goal and the principal purpose is to produce human behavior. This book provides the rationale and design guidance to maximize perceptual fidelity in the development of virtual environments, and therefore maximize the costeffectiveness as well.

Download or read book Assessing the Effectiveness of a Low cost Simulator for Instrument Training for the TH 67 Helicopter written by and published by . This book was released on 2001 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The U.S. Army uses the 2B24 Synthetic Flight Training System (SFTS) for the Instrument Phase of Initial Entry Rotary Wing (IERW) training. The SFTS is an instrument simulator, mounted on a hydraulic motion platform, with no visual system. Its technology dates from the late 1960s. Its cockpit represents the UH-1, which has been replaced by the TH-67 training helicopter. The Army is concerned with the age, complexity and costs of the SFTS, at a time when PC- based simulators, like the Frasca 342 Primary Skills Trainer (PST) are available. The PST's cockpit represents the TH-67 helicopter. It has a visual display, but no motion system. Thirty-eight IEAW students were assigned to experimental (PST) or control (SFTS) groups. After 30 hr of simulator training, both groups completed 20 hr training in the TH-67. No students were eliminated or set back to later classes. Few significant differences in performance were noted, though SFTS trainees were more likely to indicate that training in the simulator had hindered performance in the aircraft. The PST seemed inferior to the SFTS in trim control. The research demonstrated that IERW students could learn instrument skills in a simpler, more economical simulator without hydraulic controls or a motion system."--DTIC.

Download or read book US Federal Aviation Regulations 2012 written by and published by chartbundle.com. This book was released on with total page 4948 pages. Available in PDF, EPUB and Kindle. Book excerpt: United States Federal Aviation Regulations. Current as of 01 JULY 2012. Contains FAR 14CFR Parts 1 through 198; NTSB 49CFR830; and TSA 49CFR1540, 1550 and 1552.

Download or read book Code of Federal Regulations written by and published by . This book was released on 2009 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.

Download or read book Patent Law for Computer Scientists written by Daniel Closa and published by Springer Science & Business Media. This book was released on 2010-02-03 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Patent laws are different in many countries, and inventors are sometimes at a loss to understand which basic requirements should be satisfied if an invention is to be granted a patent. This is particularly true for inventions implemented on a computer. While roughly a third of all applications (and granted patents) relate, in one way or another, to a computer, applications where the innovation mainly resides in software or in a business method are treated differently by the major patent offices in the US (USPTO), Japan (JPO), and Europe (EPO). The authors start with a thorough introduction into patent laws and practices, as well as in related intellectual property rights, which also explains the procedures at the USPTO, JPO and EPO and, in particular, the peculiarities in the treatment of applications centering on software or computers. Based on this theoretical description, next they present in a very structured way a huge set of case studies from different areas like business methods, databases, graphical user interfaces, digital rights management, and many more. Each set starts with a rather short description and claim of the "invention", then explains the arguments a legal examiner will probably have, and eventually refines the description step by step, until all the reservations are resolved. All of these case studies are based on real-world examples, and will thus give an inexperienced developer an idea about the required level of detail and description he will have to provide. Together, Closa, Gardiner, Giemsa and Machek have more than 70 years experience in the patent business. With their academic background in physics, electronic engineering, and computer science, they know about both the legal and the subject-based subtleties of computer-based inventions. With this book, they provide a guide to a patent examiner’s way of thinking in a clear and systematic manner, helping to prepare the first steps towards a successful patent application.

Download or read book Vertical Flight Training written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-04 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal purpose of this publication is to provide a broad overview of the technology that is relevant to the design of aviation training systems and of the techniques applicable to the development, use, and evaluation of those systems. The issues addressed in our 11 chapters are, for the most part, those that would be expected to surface in any informed discussion of the major characterizing elements of aviation training systems. Indeed, many of the same facets of vertical-flight training discussed were recognized and, to some extent, dealt with at the 1991 NASA/FAA Helicopter Simulator Workshop. These generic topics are essential to a sound understanding of training and training systems, and they quite properly form the basis of any attempt to systematize the development and evaluation of more effective, more efficient, more productive, and more economical approaches to aircrew training. Individual chapters address the following topics: an overview of the vertical flight industry: the source of training requirements; training and training schools: meeting current requirements; training systems design and development; transfer of training and cost-effectiveness; the military quest for flight training effectiveness; alternative training systems; training device manufacturing; simulator aero model implementation; simulation validation in the frequency domain; cockpit motion in helicopter simulation; and visual space perception in flight simulators. Alderete, Thomas S. and Ascencio-Lee, Carmen E. and Bray, Richard and Carlton, John and Dohme, Jack and Eshow, Michelle M. and Francis, Stephen and Lee, Owen M. and Lintern, Gavan and Lombardo, David A. Ames Research Center NASA-RP-1373, NAS 1.61:1373, DOT/FAA/CT-94/83 ...