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  • 1
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    Digital signal conditioning for flight test instrumentation (1991)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An introduction to digital measurement processes on aircraft is provided. Flight test instrumentation systems are rapidly evolving from analog-intensive to digital intensive systems, including the use of onboard digital computers. The topics include measurements that are digital in origin, as well as sampling, encoding, transmitting, and storing data. Particular emphasis is placed on modern avionic data bus architectures and what to be aware of when extracting data from them. Examples of data extraction techniques are given. Tradeoffs between digital logic families, trends in digital development, and design testing techniques are discussed. An introduction to digital filtering is also covered.
    Keywords: AIRCRAFT INSTRUMENTATION
    Type: NASA-TM-101739 , H-1695 , NAS 1.15:101739 , AGARDOGRAPH-160
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Automated Aerial Refueling Hitches a Ride on AFF (2007)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: The recent introduction of uninhabited aerial vehicles [UAVs (basically, remotely piloted or autonomous aircraft)] has spawned new developments in autonomous operation and posed new challenges. Automated aerial refueling (AAR) is a capability that will enable UAVs to travel greater distances and loiter longer over targets. NASA Dryden Flight Research Center, in cooperation with the Defense Advanced Research Projects Agency (DARPA), the Naval Air Systems Command (NAVAIR), the Naval Air Force Pacific Fleet, and the Air Force Research Laboratory, rapidly conceived and accomplished an AAR flight research project focused on collecting a unique, high-quality database on the dynamics of the hose and drogue of an aerial refueling system. This flight-derived database would be used to validate mathematical models of the dynamics in support of design and analysis of AAR systems for future UAVs. The project involved the use of two Dryden F/A-18 airplanes and an S-3 hose-drogue refueling store on loan from the Navy. In this year-long project, which was started on October 1, 2002, 583 research maneuvers were completed during 23 flights.
    Keywords: Man/System Technology and Life Support
    Type: DRC-04-13 , NASA Tech Briefs, August 2007; 17
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    The development of an airborne information management system for flight test (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: An airborne information management system is being developed at the NASA Dryden Flight Research Facility. This system will improve the state of the art in management data acquisition on-board research aircraft. The design centers around highly distributable, high-speed microprocessors that allow data compression, digital filtering, and real-time analysis. This paper describes the areas of applicability, approach to developing the system, potential for trouble areas, and reasons for this development activity. System architecture (including the salient points of what makes it unique), design philosophy, and tradeoff issues are also discussed.
    Keywords: AIRCRAFT INSTRUMENTATION
    Type: AIAA PAPER 92-4113 , In: AIAA Biennial Flight Test Conference, 6th, Hilton Head Island, SC, Aug. 24-26, 1992, Technical Papers (A93-11251 01-05); p. 323-332.
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Comparison of Relative Navigation Solutions Applied Between Two Aircraft (2002)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Use of global positioning systems (GPS) for guidance and control functions is of increasing interest to the aviation industry. Many levels of solutions exist, from the relatively simple to highly complex integrated systems. This presentation examines three different GPS approaches to determining the relative separation between two aircraft. It presents flight test data showing the errors in each of the three approaches, tradeoffs in selecting from these three approaches, and the simplifying assumptions made for implementing applications that may reduce the requirements and therefore the cost of using them.
    Keywords: Aircraft Communications and Navigation
    Type: NASA/TM-2002-210728 , H-2498 , NAS 1.15:210728 , AIAA 1st Technical Conference and Workshop on Unmanned Aerospace Vehicles, Systems, Technologies and Operations; May 20, 2002 - May 23, 2002; Portsmouth, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    The development of an airborne information management system for flight test (1992)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An airborne information management system is being developed at the NASA Dryden Flight Research Facility. This system will improve the state of the art in management data acquisition on-board research aircraft. The design centers around highly distributable, high-speed microprocessors that allow data compression, digital filtering, and real-time analysis. This paper describes the areas of applicability, approach to developing the system, potential for trouble areas, and reasons for this development activity. System architecture (including the salient points of what makes it unique), design philosophy, and tradeoff issues are also discussed.
    Keywords: AIRCRAFT INSTRUMENTATION
    Type: NASA-TM-104251 , H-1839 , NAS 1.15:104251 , AIAA PAPER 92-4113 , Biennial Flight Test Conference; Aug 24, 1992 - Aug 26, 1992; Hilton Head, SC; United States
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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