MSL project trades model
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trades modeling rapid system engineering↗
Engineering topics
Lin, I.
Publications and source records attributed to Lin, I..
Mission interactive scenarion studio for autonomous spacecraft
We propose building a Studio enabling the use of diverse existing mission activity and scenario patterns, the creation of new ones, and the modeling of their effects using existing modeling tools. The core of the Studio is a component-based Type Library, which captures years of mission adaptation patterns in various forms. The Studio works as a content server to capture the developed adaptation knowledge for reuse and provides bridging into different mission uplink implementations, including the Mission Data System [l] (MDS) state/goal machinery. Various activities can be coordinated, controlled, and reused through the Studio's component interface to establish and model a mission scenario. A special component Factory mechanism will be in place to facilitate the adaptation of projects into the Studio. The architecture of the Studio reflects and enforces a division of knowledge and actions into three parts: Model, Controller, Viewer. The Model contains information about (a proposed version of) the spacecraft and mission. The Controller contains logic for constructing scenarios of mission activities. The information in the Model and Controller is principally in the form of reusable patterns. A Viewer can be a simple or complex software system. For example, Apgen [2,3] is one possible viewer, MDS is another. A 3-tiered infrastructure is used for the Studio, reflecting the Model, Controller, Viewer architecture [4,5]. The Studio is useful in pre-phase A of a project by enabling spacecraft design options to be played against desired mission scenarios. In later design phases of a project, the construction and modeling of more detailed scenarios is supported by the Studio.
autonomous spacecraft↗
Mission interactive scenario studio for autonomous spacecraft
Explore the source record for details and available documents.
autonomous spacecraft↗
NASA JPL Distributed Systems Technology (DST) Object-Oriented Component Approach for Software Inter-Operability and Reuse
The purpose of this paper is to provide a description of NASA JPL Distributed Systems Technology (DST) section's object-oriented component approach to open inter-operable systems software development and software reuse.
software↗
A Component Architecture for Platform-Independent Space Link Extension Services
We are proposing a novel method of specifying and implementating CCSDS Space Link Extension (SLE) services.
Components software architecture communication sta↗
A Summary of the Cassini System-Level Thermal Balance Test: Science Instruments
The Cassini spacecraft, NASA's mission to investigate the Saturn system, has undergone a system-level thermal balance test program to permit verification of the science instrument thermal designs in the simulated worst-case environments.
Cassini↗
Unsteady turbulent shear flow in shock tube discontinuities
A pressure-ruptured shock tube and an arc driven shock tube, have been used to study the evolution of turbulent fluctuations at contact surfaces with N2O4-2NO2 mixtures and at ionizing shock fronts in argon. The study has focused on point density diagnostics derived from crossed light beam correlations and electric probes. Turbulent bursts are found for which dynamical and spectral analyses suggest a particle-like evolution of fluctuation segments with a unique and characteristic frequency, independent of flow history and overall flow conditions.
Johnson, J. A., III↗