A mixed-fidelity simulation environment for humanin-the-loop study of Distributed Air/Ground-Traffic Management (DAG-TM) concepts has been developed at NASA's Ames Research Center. The simulation environment facil...
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ISBN:
(纸本)9781624100918
A mixed-fidelity simulation environment for humanin-the-loop study of Distributed Air/Ground-Traffic Management (DAG-TM) concepts has been developed at NASA's Ames Research Center. The simulation environment facilitates large-scale experiments supporting high numbers of pilot, air traffic controller, and air traffic manager participants. Decision Support Tools (DST) for flight crews and air traffic service providers are accessible at the respective operator stations. Many operator positions can be augmented or autonomously run with agent support. We present samplings of results from studies conducted using this environment, and outline our goals in terms of improving and refining the simulation. We review the overall simulation architecture, and the key upgrades, including: • Converting controller and desktop simulator displays to run Multi Aircraft Control System (MACS) interfaces. Developed at Ames, MACS stations are user configurable for the specific participant-Center controller, TRACON controller, traffic flow manager, or pilot. • Upgrading the older Center TRACON Automation System (CTAS) based generic controller radar displays with MACS embedded high fidelity replicas of fielded Center and TRACON controller stations. • Replacing the conventional analog voice communication system with a digital, voiceover-Internet Protocol system permitting many more users-participants and simulation support personal-to communicate simultaneously, over multiple channels. • Incorporating a weather server to provide simulated, real-time winds and weather events. Work is underway to connect the NASA Amesbased simulation to the Air Traffic Operations Simulator at NASA Langley in order to conduct studies of air traffic operational concepts, distributed across the two NASA Centers. The Advanced Air Transportation technologies (AATT) project office of NASA's Airspace Systems Program provides funding for this work.
The National Aerospace Laboratory NLR developed the Traffic Manager (TMX), a desktop air traffic environment simulation tool suitable for a wide range of fast and real-time applications. The main reason for this devel...
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ISBN:
(纸本)9781624100918
The National Aerospace Laboratory NLR developed the Traffic Manager (TMX), a desktop air traffic environment simulation tool suitable for a wide range of fast and real-time applications. The main reason for this development was the need for a research simulation tool that could be used in the exploration and validation of new Air Traffic Management (ATM) concepts. Because the current medium and longterm forecasts predict significant increase in air traffic movements, there is a strong need for new ATM concepts that can deal with this increase in air traffic movements. For this reason both Europe and the United States are investing in the development and validation of future ATM concepts. NLR is participating in many projects concerning these research topics. Concept validation research often encompasses fast- and real-time simulation studies. Studies that demand flexible, accurate and easy-touse tools. In particular realistic traffic simulation is essential when it comes to validating new operational concepts. For this purpose the TMX has been developed. TMX has proven to be an ideal tool for various validation and research purposes. It can be used as on-line traffic generator and experiment manager for flight simulators, but also as off-line traffic simulation tool. This paper discusses the development of this versatile traffic simulation application and the way it grew to new research challenges. Special attention is paid to the various developed interfaces for linking TMX to real-time flight simulators, such as NLR's Research Flight Simulator (RFS) or remote simulators via Distributed Interactive simulation (DIS), High Level Architecture (HLA) and/or internet protocols. Also an overview is given of some recent ATM studies that made use of TMX. TMX has earned its "wings" in Free Flight research over the past years. It has been used very successfully in many research projects often concerned with Free Flight. One of the most important reasons for this success is th
A Linux real time manned simulation has been developed directly from the UNIX version, operates on several PC platforms, and out performs the original Silicon Graphics UNIX application. The simulation was written in &...
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ISBN:
(纸本)9781624100918
A Linux real time manned simulation has been developed directly from the UNIX version, operates on several PC platforms, and out performs the original Silicon Graphics UNIX application. The simulation was written in "C", C++, FORTRAN, and other languages and uses OpenGL and other software for the displays. The current generation of computers used for this type of rapid prototyping simulation include Silicon Graphics, Inc. (SGI) running UNIX, Compaq (former Digital Equipment Corporation (DEC) Alphas) running OpenVMX or VMX, and others to execute the simulations in real time. Dual-processor 2.0 GHz+ PC computers also provide enough power for the simulation to run in real time. When converting to a PC platform, an operating system needed to be selected. Previous work in Windows and Linux has shown good results with both and were the obvious choices. For this project, to maximize the reuse of UNIX, to minimize the cost of the software, and to provide common software that could still run on a high end SGI Onyx, Linux was selected as the operating system. The cockpit used for this research represents the class of low-cost engineering development simulators and is called the Reconfigurable Manned Interactive Crew Station (RMICS) simulator. The RMICS consists of flight hardware grips, a display surface showing the virtual cockpit layout with embedded avionics displays, and a separate out-the-window display with an embedded Head-Up Display (HUD). The cockpit was used to verify the operation of the simulation for a variety of missions and different types of aircraft. The cockpit display can now have embedded video graphics including the targeting FLIR and radar, which used to be done with multiple graphics display heads and special video combiners. The RMICS is often linked to other computers running avionics and weapon system software and flown by operational pilots to help develop, evaluate, and refine the requirements using representative mission scenarios. The paper will
A flight test program using an F-15E and Command and Control aircraft successfully demonstrated advanced sensor-to-shooter capabilities and improved pilot situational awareness. The program was called Weapons System O...
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ISBN:
(纸本)9781624100918
A flight test program using an F-15E and Command and Control aircraft successfully demonstrated advanced sensor-to-shooter capabilities and improved pilot situational awareness. The program was called Weapons System Open Architecture (WSOA) - funded jointly by Air Force Research Laboratory (AFRL), Defense Advanced Research Projects Agency (DARPA), Computer Resources Support Improvement Program (CRSIP), and the "Open Systems Joint Task Force" (JTT). The new capability demonstrated transmission of images from off-board sensors via Link- 16, as well as shared annotations on these images by both the command and control operator and the pilot/weapon system officer in the F-15E. This new capability was provided by open systems embedded avionics software and displays which interface directly to off-board assets using existing networks. The software was loaded onto a new F-15E mission computer and flight-tested along with a command and control aircraft. This capability was first developed and demonstrated using a Windows 2000 PC computer with a Desktop Test Environment (DTE) that executes the aircraft Operational Flight Program (OFP), integrated with a real time manned simulator and off-board command and control digital simulation to prototype and demonstrate the new concepts. The current generation of aircraft has many computer systems to control the aircraft and the on-board systems to support its mission using specifically designed and built computers. The trend is to transition to more general-purpose computers, open system software, and higher order computer languages for these computers and use compatible operating systems that support common source code. A combination of Windows 2000 on desktop PCs and Linux on the real time simulator was used to host the open system architectures embedded flight software. New weapon system concepts are often developed using rapid prototyping techniques and tested by flight crews using real time simulators. The computer code written
The paper addresses the problem of modeling and control of a wing parachute for high atmosphere to ground recovery missions. Aerodynamic efforts are properly modeled with a MATLAB code based on the Vortex Lattice Theo...
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作者:
Hall, J.C.Simulation Systems
Space and Satellite Control L3 Communication Systems-West San Jose CA 95134-1619 United States
Computational issues encountered in modeling the operation of plane field of view sun sensors in the context of real-time spacecraft simulation are addressed. In particular, a new algorithm (image vector method) devel...
The Radio Frequency simulation System (RFSS) is a complex hardware-in-the-loop simulation system designed to test the capabilities of RF guided missiles. This paper discusses some of the major changes made to the RFSS...
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ISBN:
(纸本)9781624101212
The Radio Frequency simulation System (RFSS) is a complex hardware-in-the-loop simulation system designed to test the capabilities of RF guided missiles. This paper discusses some of the major changes made to the RFSS over the past 27 years to improve performance and reduce maintenance costs. The first section will provide necessary background information describing the purpose of the RFSS and the major components of the RFSS. The remainder of the paper will describe major upgrades to the RFSS, the resulting improvements in performance and usability, and some of the valuable lessons learned along the way.
The consideration of robustness in flight control design is an important issue. In this paper we address the real-time simulation of a benchmark aircraft model with robust flight controllers. The distributed system im...
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A high-performance image generator available as a PC-based, Commercial-Off-The-Shelf (COTS) product has been integrated with flight simulation software from the consumer market. The combination has resulted in a new c...
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