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AIAA Atmospheric flight Mechanics Conference, 2018

作者： Bob Balaram, J. Canham, Timothy Duncan, Courtney Golombek, Matt Grip, Håvard Fjær Johnson, Wayne Maki, Justin Quon, Amelia Stern, Ryan Zhu, David Jet Propulsion Laboratory California Institute of Technology PasadenaCA91109 United States NASA Ames Research Center Moffet Field CA94035 United States Robotics Technologist JPL Mobility and Robotic Systems Section JPL Flight Software and Avionics Systems Section JPL Flight Communications Systems Section JPL Planetary Science Section Robotics Technologist JPL Guidance and Control Section NASA Ames Aeromechanics Office JPL Instrument Software and Science Data Systems Section JPL Spacecraft Mechanical Engineering Section JPL Flight Electronics Section Robotics Electrical Engineer JPL Mobility and Robotic Systems Section

We describe a helicopter that is being developed as a technology demonstrator of Mars aerial mobility. The key design features of the helicopter, associated test infrastructure, and results from a full-scale prototype... 详细信息

ISBN: (数字)9781624105258

ISBN: (纸本)9781624105258

关键词： Antennas

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Piloting model based engineering techniques for spacecraft concepts in early formulation

Piloting model based engineering techniques for spacecraft c...

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20th Annual International Symposium of the International Council on systems Engineering, INCOSE 2010

作者： Cole, Bjorn Delp, Chris Donahue, Kenny Mission Systems Concepts Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. Pasadena CA 91109-8099 United States Flight Software and Data Systems Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. Pasadena CA 91109-8099 United States

ISBN: (纸本)9781617388873

The JPL Integrated Model-Centric Engineering (IMCE) project is tasked with bringing Model Based Engineering methods, tools and practices into use by systems engineers. Taking a Europa-focused flagship concept proposal as an example of a system that is early in its engineering lifecycle, IMCE piloted architectural elements for an integrated modeling environment. These elements were used together both as a proof-of-concept and to guide development of the methods, tools and practices for flight projects as JPL transitions to model-centric engineering. This paper presents both products of this effort and a variety of insights to guide the future of model-centric engineering techniques. Also, recommendations are made regarding the strengths and weaknesses of existing information models and the systems Modeling Language (SysML). © 2010 by California Institute of Technology.

关键词： Modeling languages

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11.2.3 Piloting Model Based Engineering Techniques for Spacecraft Concepts in Early Formulation

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INCOSE International Symposium 2010年第1期20卷 1351-1365页

作者： Cole, Bjorn Delp, Chris Donahue, Kenny Mission Systems Concepts Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. PasadenaCA91109-8099 United States Flight Software and Data Systems Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. PasadenaCA91109-8099 United States

关键词： Modeling languages

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Recent developments on a simulator for lunar surface operations

Recent developments on a simulator for lunar surface operati...

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作者： Nayar, H. Jain, A. Balaram, J. Cameron, J. Lim, C. Mukherjee, R. Pomerantz, M. Reder, L. Myint, S. Serrano, N. Wall, S. Jet Propulsion Laboratory Robotics and Mobility Section California Institute of Technology 4800 Oak Grove Drive Pasadena CA 91109 United States Flight Software and Data Systems Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena CA 91109 United States Strategic Planning and Project Formulation Office Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena CA 91109 United States

ISBN: (纸本)9781563479793

New models and capabilities in the Jet Propulsion Laboratory's (JPL) Lunar Surface Operations Simulator (LSOS) are reported in this paper. LSOS is a simulator built to support surface operations design and planning for future lunar missions. LSOS models surface systems, their mechanical properties, and operations. In addition to simulating the dynamic interactions during operations, for example, wheel-soil interaction or component motion, LSOS also models associated environmental, and system mechanical and physical processes. These include thermal, radiation and power transients, and terrain. Lighting models are used to generate material textures, reflectance and shadows. LSOS's integrated architecture allows use of common models and enables interactions between components operating in different domains to be easily modeled. Models used in LSOS simulations and results from the simulation of two traverses are reported. The first is a replication of a traverse conducted during a field trial of prototype systems. The second is a traverse from a lunar outpost site near Shackleton Crater to Malapert Mountain. LSOS simulations and analyses will provide data to help in the optimization of mission plans. Copyright © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Simulators

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A control architecture for safe human-robotic interactions during lunar surface operations

A control architecture for safe human-robotic interactions d...

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作者： Wagner, David A. Dvorak, Daniel L. Baroff, Lynn E. Bennett, Matthew B. Ingham, Michel D. Mittman, David S. Mishkin, Andrew H. Jet Propulsion Laboratory California Institute of Technology Flight Software Applications and Data Management Group 4800 Oak Grove Dr. Pasadena CA 91109 United States Planning and Execution Systems Section Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. Pasadena CA 91109 United States Jet Propulsion Laboratory California Institute of Technology Mission Systems Concepts Section 4800 Oak Grove Dr. Pasadena CA 91109 United States Jet Propulsion Laboratory California Institute of Technology Flight Software Systems Engineering and Architectures Group 4800 Oak Grove Dr. Pasadena CA 91109 United States Planning Software Systems Group Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. Pasadena CA 91109 United States

ISBN: (纸本)9781563479717

Long duration human-robotic missions to the Moon and beyond will require increased use of automation beyond current Space Shuttle and International Space Station practice. This paper explores the application of a model- and state-based goal-oriented control architecture to solving the problem of coordinating activities between humans and robots to improve the reliability and safety of these interactions. A goal-oriented control system continuously enforces constraints on states of the system to achieve not only control goals, but also to enforce passive constraints, such as safety constraints, on those activities. Copyright © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Space shuttles

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Technology developments integrating a space network communications testbed

Technology developments integrating a space network communic...

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SpaceOps 2006 Conference - 9th International Conference on Space Operations

作者： Kwong, Winston Jennings, Esther Clare, Loren Leang, Dee Jet Propulsion Laboratory/Caltech 4800 Oak Grove Drive Pasadena CA 91109 United States Digital signal Processing Research Group Communications Architectures and Research Section United States Communications Networks Group Communications Architectures and Research Section United States Flight Software Applications and Data Product Management Group Flight Software and Data Systems Section United States

ISBN: (纸本)9781624100512

As future manned and robotic space explorations missions involve more complex systems, it is essential to verify, validate, and optimize such systems through simulation and emulation in a low cost testbed environment. The goal of such a testbed is to perform detailed testing of advanced space and ground communications networks, technologies, and client applications that are essential for future space exploration missions. We describe the development of new technologies enhancing our Multi-mission Advanced Communications Hybrid Environment for Test and Evaluation (MACHETE) that enables its integration in a distributed space communications testbed. MACHETE combines orbital modeling, link analysis, and protocol and service modeling to quantify system performance based on comprehensive considerations of different aspects of space missions. It can simulate entire networks and can interface with external (testbed) systems. The key technology developments enabling the integration of MACHETE into a distributed testbed are the Monitor and Control module and the QualNet IP Network Emulator module. Specifically, the Monitor and Control module uses web services interface mechanism to centralize the management of testbed components. The QualNet IP Network Emulator module allows externally generated network traffic to be passed through MACHETE to experience simulated network behaviors such as propagation delay, data loss, orbital effects and other communications characteristics, including entire network behaviors. We report a successful integration of MACHETE with a space communication testbed modeling a lunar exploration scenario. © 2006 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Testbeds

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Efficient and robust data collection using compact micro hardware, distributed bus architectures and optimizing software

Efficient and robust data collection using compact micro har...

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AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference

作者： Chau, Savio Vatan, Farrokh Randolph, Vincent Baroth, Edmund C. Jet Propulsion Laboratory California Institute of Technology Pasadena CA 90019 Autonomous Systems Architecture and Program Development Section JPL Mail-Stop 198-219 Flight Software and Data Systems Section JPL Mail-Stop 126-157 Flight System Electronics Section JPL Mail-Stop 156-142 Autonomous Systems Architecture and Program Development Section JPL Mail-Stop 156-142

ISBN: (纸本)1563478188

Future In-Space propulsion systems for exploration programs will invariably require data collection from a large number of sensors. Consider the sensors needed for monitoring several vehicle systems' states of health, including the collection of structural health data, over a large area. This would include the fuel tanks, habitat structure, and science containment of systems required for Lunar, Mars, or deep space exploration. Such a system would consist of several hundred or even thousands of sensors. Conventional avionics system design will require these sensors to be connected to a few Remote Health Units (RHU), which are connected to robust, micro flight computers through a serial bus. This results in a large mass of cabling and unacceptable weight. This paper first gives a survey of several techniques that may reduce the cabling mass for sensors. These techniques can be categorized into four classes: power line communication, serial sensor buses, compound serial buses, and wireless network. The power line communication approach uses the power line to carry both power and data, so that the conventional data lines can be eliminated. The serial sensor bus approach reduces most of the cabling by connecting all the sensors with a single (or redundant) serial bus. Many standard buses for industrial control and sensor buses can support several hundreds of nodes, however, have not been space qualified. Conventional avionics serial buses such as the Mil-Std-1553B bus and IEEE 1394a are space qualified but can support only a limited number of nodes. The third approach is to combine avionics buses to increase their addressability. The reliability, EMI/EMC, and flight qualification issues of wireless networks have to be addressed. Several wireless networks such as the IEEE 802.11 and Ultra Wide Band are surveyed in this paper. The placement of sensors can also affect cable mass. Excessive sensors increase the number of cables unnecessarily. Insufficient number of sensors m

关键词： Spacecraft propulsion

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A whale of a tale: Creating spacecraft telemetry data analysis products for the deep impact mission

A whale of a tale: Creating spacecraft telemetry data analys...

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SpaceOps 2006 Conference - 9th International Conference on Space Operations

作者： Sturdevant, Kathryn F. Wright, Jesse J. Lee, Yee N. Lighty, Roger A. Jet Propulsion Laboratory California Institute of Technology Integrated Ground Data Systems Section 4800 Oak Grove Drive/M.S. 264-214 Pasadena CA 91109 United States Jet Propulsion Laboratory California Institute of Technology Flight Software and Data Systems 4800 Oak Grove Drive/M.S. 264-214 Pasadena CA 91109 United States Jet Propulsion Laboratory California Institute of Technology Enterprise Computing and Networking 4800 Oak Grove Drive/M.S. 311-104 Pasadena CA 91109 United States Jet Propulsion Laboratory California Institute of Technology Office of Export Compliance 4800 Oak Grove Drive/M.S. 180-202 Pasadena CA 91109 United States

ISBN: (纸本)9781624100512

This paper describes some of the challenges and lessons learned from the Deep Impact (DI) Mission Ground data System's (GDS) telemetry data processing and product generation tool, nicknamed "Whale." One of the challenges of any mission is to analyze testbed and operational telemetry data. Methods to retrieve this data to date have required spacecraft subsystem members to become experts in the use of a myriad of query and plot tools. As budgets shrink, and the GDS teams grow smaller, more of the burden to understand these tools falls on the users. The user base also varies from novice to expert, and requiring them to become GDS tool experts in addition to spacecraft domain experts is an undue burden. The "Whale" approach is to process all of the data for a given spacecraft test, and provide each subsystem with plots and data products "automagically." Since spacecraft team members receive their data in a comprehensible format, they can immediately begin their analysis, or load the standard formatted data into familiar tools. The Whale generated data products became so critical to understanding the state of the spacecraft during prelaunch tests, that a parallel version of Whale was created to run daily in operations. During the Deep Impact cruise phase from January to July 2005, in addition to the daily "ops" whale, the four testbeds were often running 24 hours a day/7 days of the week and most of the telemetry data produced during those tests were processed through Whale. To compound the issue, there were three possible sources for data: two spacecrafts (flyby and impactor), and the flyby data was dual, meaning it could come from spacecraft side A or side B. data analysis products therefore had to be created separately for each of the three sources of data: SCU_A, SCU_B and IMP. The lessons learned from Whale will be used to design the next generation Testbed and data Archival systems for future JPL missions. © 2006 by the American Institute of Aeronautics and Astrona

关键词： Spacecraft

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Engineering spacecraft mission software using a model-based and safety-driven design methodology

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Journal of Aerospace Computing, Information and Communication 2006年第11期3卷 562-586页

作者： Weiss, Kathryn Anne Dulac, Nicolas Chiesi, Stephanie Daouk, Mirna Zipkin, David Leveson, Nancy Jet Propulsion Laboratory Pasadena CA 91109 Massachusetts Institute of Technology Cambridge MA 02139 Flight Software and Data Systems Section M/S 301-225 4800 Oak Grove Drive AIAA Department of Aeronautics and Astronautics 77 Mass. Ave. #33-407 Engineering Systems Division 77 Mass. Ave. #33-407 Department of Aeronautics and Astronautics 77 Mass. Ave. #33-336

This paper outlines an integrated approach to system, software, and safety engineering for today's complex, safety-critical systems. Intent Specifications, component-based systems engineering, and a new hazard analysis technique based on the systems Theoretic Accident Modeling and Process (STAMP) are all combined in a seamless, safety-driven design methodology. This integrated approach to system software development is demonstrated through an example application of the techniques on a low-Earth orbiting satellite. The results of performing the system modeling, hazard analyses, and model simulations of the spacecraft as a whole are also presented. Finally, the approach is compared to other, current model-based systems engineering and hazard analysis techniques. Copyright © 2006 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Computer software

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Achieving control and interoperability through unified model-based systems and software engineering

Achieving control and interoperability through unified model...

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InfoTech at Aerospace: Advancing Contemporary Aerospace Technologies and Their Integration

作者： Rasmussen, Robert Ingham, Michel Dvorak, Daniel Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 United States Systems and Software Division M/S 301-225 4800 Oak Grove Dr. United States Flight Software and Data Systems Section M/S 301-225 4800 Oak Grove Dr. United States AIAA United States Systems and Software Division M/S 301-270 4800 Oak Grove Dr. United States

ISBN: (纸本)1563477394

Control and interoperation of complex systems is one of the most difficult challenges facing NASA's Exploration systems Mission Directorate. An integrated but diverse array of vehicles, habitats, and supporting facilities, evolving over the long course of the enterprise, must perform ever more complex tasks while moving steadily away from the sphere of ground support and intervention. Interoperability needs will grow to unprecedented levels as systems become more dependent on one another than on support from home. Accomplishing this with consistent safety and reliability calls for a long-term strategy. This paper describes the control challenge faced by future exploration systems and outlines a realistic approach to solving it, based upon a unified, principled architectural approach to both software and systems engineering. It concludes by suggesting the steps necessary to put this capability in place for exploration systems. Copyright © 2005 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： software engineering

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