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15th DASC. AIAA/IEEE Digital Avionics Systems Conference

27-31 Oct 1996

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Displaying Results 1 - 25 of 72
  • Reduction of weather-related terminal area delays in the free-flight era

    Publication Year: 1996, Page(s):185 - 190
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    While much of the emphasis of the free-flight movement has been concentrated on reducing enroute delays, airport capacity is a major bottleneck in the current airspace system, particularly during bad weather. According to the Air Transport Association (ATA) Air Carrier Delay Reports, ground delays (gate-hold, taxi-in, and taxi-out) comprise 75 percent of total delays. It is likely that the project... View full abstract»

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  • A shared model of intentions for Free Flight

    Publication Year: 1996, Page(s):179 - 184
    Cited by:  Papers (9)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    This paper describes a research program that validates a real-time model of multi-agent shared intentions in a set of manned Free Flight air operations scenarios performed in a high-fidelity, multi-agent simulator system. The shared model of intentions is based on the OPAL software system previously developed by Applied Systems Intelligence, Inc. The validation was conducted as a series of manned ... View full abstract»

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  • Honeywell FLASH fiber optic motherboard evaluations

    Publication Year: 1996, Page(s):167 - 174
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1084 KB)

    The use of fiber optic data transmission media can make significant contributions in achieving increasing performance and reduced life cycle cost requirement placed on commercial and military transport aircraft. For complete end-to-end fiber optic transmission, photonics technologies and techniques need to be understood and applied internally to the aircraft line replaceable units (LRUs) as well a... View full abstract»

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  • Dynamic fault tree analysis for digital fly-by-wire flight control system

    Publication Year: 1996, Page(s):479 - 484
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Digital Fly-By-Wire (FBW) Flight Control System (FCS) is designed to achieve high level of reliability, frequently employ high level of redundancy. Dynamic redundancy employed in FEW system can realize complex fault and error diagnosis, recovery and reconfiguration. It is very difficult to analyze the reliability of the FEW system by traditional methods, such as Fault Tree Analysis (FTA) or Networ... View full abstract»

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  • New millennium deep space Tiny Transmitter: first phase of a digital transponder

    Publication Year: 1996, Page(s):225 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    An advanced technology X- and Ka-band (8 and 32 GHz) Tiny Transmitter is being developed for the New Millennium program and is described in this paper. The Tiny Transmitter is the first development phase of the Tiny Transponder which will incorporate recent advances in miniaturization and flexibility of radio systems by utilizing digital radio techniques. These techniques incorporate digital techn... View full abstract»

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  • Optical demonstration on Honeywell FLASH program

    Publication Year: 1996, Page(s):159 - 165
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1168 KB)

    Flight critical system architects are increasingly integrating aircraft control and management functionality. This functional integration increases performance and cost of ownership requirements on the communication pathways. Optical signal transmission is an attractive approach to satisfying these system requirements. Investigations and demonstrations of optical signaling are needed to validate a... View full abstract»

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  • Software technology for next-generation strike fighter avionics

    Publication Year: 1996, Page(s):37 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    The mission of the joint strike fighter (JSF) program is to facilitate evolution of fully developed and validated requirements, proven concepts, and mature demonstrated technologies to support successful development and production of next-generation strike weapon systems for the U.S. Air Force (USAF), Navy (USN), Marine Corps (USMC), and US allies. Commensurate with its mission, the JSF Program en... View full abstract»

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  • Reconfiguration in an integrated avionics design

    Publication Year: 1996, Page(s):471 - 478
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    This report covers the subject of F-22 avionics core processing fault tolerance and reconfiguration. Fault tolerance is defined as a survivable attribute of a system that allows it to deliver its expected service after faults have manifested themselves within the system. The report addresses all dimensions of the integrated avionics processing fault tolerance/reconfiguration implementation. This i... View full abstract»

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  • Avionics HIRF certification for the 21st century

    Publication Year: 1996, Page(s):433 - 436
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The FAA and industry EMC leaders have periodically met to define the adequacy of protection requirements for civil avionics from outside interference since 1980. In 1986 the FAA Technical Center contracted for a definition of the electromagnetic environment for civil aviation. This study was performed by the Electromagnetic Compatibility Analysis Center (ECAC). The study has shown levels of exposu... View full abstract»

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  • SAE AS4893 Generic Open Architecture (GOA) framework

    Publication Year: 1996, Page(s):217 - 222
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The generic open architecture (GOA) framework is a Society of Automotive (SAE) Avionics Systems Division standard, SAE AS4893. The GOA framework was developed as a framework for discussing open systems architecture and for identifying critical components and interfaces. The GOA framework is being used as a framework within the avionics community for developing a preferred set of interface standard... View full abstract»

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  • Fly-by-light flight control system development for transport aircraft

    Publication Year: 1996, Page(s):153 - 158
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The Fly-By-Light Advanced System Hardware (FLASH) program is developing and demonstrating dual use fly-by-light (FBL) hardware for flight control systems On military and commercial aircraft. Under the transport aircraft portion of this program, we and our industry team-mates are demonstrating two representative fly-by-light systems. These fly-by-light demonstrations include a ground demonstration ... View full abstract»

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  • The Aeronautical Telecommunications Network (ATN) testbed

    Publication Year: 1996, Page(s):117 - 122
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The Aeronautical Telecommunication Network (ATN) is being defined within the International Civil Aviation Organization (ICAO) as a digital data communications network for the aeronautical community. ATN routers will link the diverse networks and technologies within the aeronautical environment into an internetwork. The routers provide intelligence to select the best communications path for each pa... View full abstract»

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  • Developing a design complexity measure

    Publication Year: 1996, Page(s):31 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The cost to develop and maintain software is increasing at a rapid rate. The majority of the total cost to develop software is spent in the post-deployment-maintenance phase of the software life-cycle. In order to reduce life-cycle costs, more effort needs to be spent in earlier phases of the software life-cycle. One characteristic that merits investigation is the complexity of a software design. ... View full abstract»

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  • Fault-tolerance: a methodology for implementing highly dependable systems

    Publication Year: 1996, Page(s):465 - 470
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Dependability is defined as the trustworthiness of a system such that: reliance may be justifiably placed on the service it delivers and; the system has the ability to provide required service whenever that service is needed. The service delivered by a system is its behavior as perceived by its user(s); a user is another system (human or physical) that interacts with the dependable system. This pa... View full abstract»

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  • Affordable reliable packaging technologies for avionics systems of the coming era

    Publication Year: 1996, Page(s):423 - 431
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Lower cost, reliable military avionics systems can be realized by leveraging key enabling packaging technologies from the commercial electronics industry. This includes the technologies and corresponding infrastructures which are arising in response to the Consumer Portable Electronics COTS market. This paper argues that innovative use of emerging commercial packaging technologies will be required... View full abstract»

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  • Open systems architecture and commercial off the shelf technology applied to retrofit military display subsystems

    Publication Year: 1996, Page(s):211 - 216
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    This paper presents considerations and tradeoffs in using an Open Systems Architecture (OSA) and Commercial Off The Shelf (COTS) technology to meet the needs of retrofit military avionics display systems applications. The issues that systems designers must consider when applying OSA/COTS to retrofit aircraft applications are listed and discussed. The role of OSA and COTS in modular avionics system... View full abstract»

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  • Design of a power-optimized micro miniature advanced instrument controller for sensor craft applications

    Publication Year: 1996, Page(s):145 - 150
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    A highly-functional self-contained sensor data acquisition and processing system is under development for a probe designed to penetrate the surface of Mars. The processing system, based on an 8051 controller, is about the size of a postage stamp, weighs three grams, and consumes 50 mW in nominal operation. It is designed to operate in space under 15,000 G impacts and down to -120°C temperature... View full abstract»

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  • VDL Mode 4/STDMA-a CNS data link

    Publication Year: 1996, Page(s):111 - 116
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    At its tenth Air Navigation Conference (1991), the ICAO endorsed the so-called Communication, Navigation, Surveillance/Air Traffic Management concept, CNS/ATM. This concept envisages the use of data link communications, satellite navigation and automatic dependent surveillance (ADS). The Swedish Civil Aviation Administration (SCAA) has been involved in the technical and operational development of ... View full abstract»

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  • Legacy software reengineering technology

    Publication Year: 1996, Page(s):25 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The United States Air Force's Wright Laboratory and TASC are continuing to develop an environment for reengineering software from one language to another. Our approach engineers a program in the new language by reusing portions of the original implementation and design. This article summarizes our reengineering process model, describes the existing FORTRAN-to-Ada reengineering technology that we d... View full abstract»

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  • A low-cost comprehensive process for assessing electromagnetic environment (EME) effects on flight-critical control computers

    Publication Year: 1996, Page(s):443 - 449
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    A process is presented for assessing the effects of electromagnetic environments on flight-critical aircraft control computers. The assessment process is a combination of analysis, simulation, and tests and is currently under development for demonstration at the NASA Langley Research Center in the High Intensity Radiated Fields (HIRF) Laboratory and Closed-Loop Test (CLT) Laboratory. The assessmen... View full abstract»

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  • A description of the software element of the NASA EME flight tests

    Publication Year: 1996, Page(s):457 - 463
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    In support of NASA's Fly-By-Light/Power-By-Wire (FBL/PBW) program, a series of flight tests were conducted by NASA Langley Research Center in February, 1995. The NASA Boeing 757 was flown past known RF transmitters to measure both external and internal radiated fields. The aircraft was instrumented with strategically located sensors for acquiring data on shielding effectiveness and internal coupli... View full abstract»

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  • Avionics processors in the coming era: if you touch me more than twice I'll scream

    Publication Year: 1996, Page(s):415 - 422
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3652 KB)

    Current military avionics systems have arisen from a technology, procurement, and support heritage that has driven system concepts and approaches down very narrow channels. The present technology and programmatic environments open the possibility of a rennaissance in avionics system thinking. This paper briefly carries out one such exercise View full abstract»

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  • Portable electronic devices: which direction?

    Publication Year: 1996, Page(s):339 - 343
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper examines the background and development of the portable electronic device (PED) problem. Although these devices were not perceived as a problem in the past, the proliferation of computer-based electronic devices, small radio receivers, transceivers, telephones, and video cameras has created a new class of problems for both modern and older civil transport aircraft. The proliferation of ... View full abstract»

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  • Modular, reusable flight software for production strike aircraft

    Publication Year: 1996, Page(s):401 - 406
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    In 1995, an initiative was launched at McDonnell Douglas Aerospace to assess the potential for reuse of flight software across multiple fighter aircraft platforms, and to define and demonstrate a supporting system architecture based upon open commercial hardware, software, standards and practices. The project has, thus far, yielded a preliminary common software architecture for mission processing,... View full abstract»

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  • User portability in open systems

    Publication Year: 1996, Page(s):205 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The open systems concept in the design of computer-based systems has become accepted as a method for developing cost-effective systems. One goal of open systems design within the U.S. Department of Defense is user portability. User portability can be described as the ability of users to move from one application or system to another, with minimal difficulties. It is accomplished by applying style ... View full abstract»

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