• AN EVALUATION OF TERRESTRIAL WIRELESS NETWORK MODELING APPROACHES FOR THE SPACE MOBILE NETWORK

      Newton, Todd A.; Roberts, Christopher J.; Fletcher, Gregory G.; Rossiter, Daniel S.; Southwest Research Institute®; NASA Goddard Space Flight Center (International Foundation for Telemetering, 2017-10)
      The Space Mobile Network (SMN) is NASA’s next generation architecture concept for communications services between ground and space-based assets. The SMN calls for a paradigm shift in space communications. The transition will move from an approach based on static, preplanned communications over point-to-point channels to a dynamic, event-driven, and network-based approach that facilitates service-oriented communications. In doing so, the SMN is able to leverage some concepts and technologies present in today’s terrestrial wireless networks, while others must be extended or adapted to the space communications domain. This paper provides background on key SMN architectural concepts and an evaluation of the suitability of terrestrial wireless network modeling tools to be used and applied for proving out SMN concepts.
    • EXTENDING CHAPTER 10 RECORDING WITH TELEMETRY NETWORK STANDARDS

      Moodie, Myron L.; Newton, Todd A.; Southwest Research Institute® (International Foundation for Telemetering, 2017-10)
      RCC 106 Chapter 10 has established the standard for interoperable flight test recording on the DOD ranges. The growth of network and distributed technologies in flight test instrumentation (FTI) has led to the recent adoption of Chapters 21 through 28 to provide standards for implementing interoperable telemetry networks. However, the new standards have led to confusion and concern that the investment in Chapter 10 recorders will be lost. This paper first clarifies the complementary nature of the RCC 106 chapters and proposes one possible path to extending the current capability of a Chapter 10 recorder with telemetry network capability while minimizing impact to existing recording and support systems.
    • NON-TRADITIONAL FLIGHT TEST SENSING SYSTEMS

      Kilpatrick, Stephen A.; Whittington, Austin J.; Southwest Research Institute® (International Foundation for Telemetering, 2017-10)
      Traditional flight test sensing applications require installation of not only the sensor but also supporting cabling and interfacing infrastructure. The cost of this supporting infrastructure increases when it must cross pressure vessel boundaries, extend long distances, or interfere with operation of the aircraft. The continuing cost and schedule pressures on flight test programs demand approaches that minimize installation complexity and reduce the need to modify the aircraft under test. Some emerging approaches have leveraged wireless techniques for data transmission but this can only be used in certain circumstances and does not address the problem of power distribution. This paper describes ongoing research into alternative sensing approaches that utilize a mix of video processing, distributed processing, and power harvesting to provide additional solutions.
    • RAPIDLY RECONFIGURABLE SYSTEM MANAGEMENT

      Noonan, Patrick J.; Whittington, Austin J.; Ibaroudene, Hakima; Moodie, Myron L.; Southwest Research Institute® (International Foundation for Telemetering, 2017-10)
      The growth of network and distributed technologies in flight test instrumentation (FTI) has provided the benefits of flexibility, scalability, and compatibility with prevalent computing capabilities. However, to achieve these capabilities, the complexity of each piece of FTI and the overall system has increased dramatically. Even with systems composed of equipment from a single vendor, it is important to have management systems that provide the flexibility to adapt quickly to various system configurations and present unified information to the flight test users. The growth of network technologies and then standardized approaches such as iNET standards becoming accepted IRIG 106 standards is leading to the growth of multi-vendor systems. These multi-vendor systems further increase the need for rapidly reconfigurable management systems. This paper describes a constraints engine we have developed to enable flexible system management systems and reflects on how these techniques have been used successfully in the iNET System Manager.