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Optimal Reconfigurations of Two-Craft Coulomb Formation in Circular Orbits

Ravi Inampudi, Hanspeter Schaub
2012 Journal of Guidance Control and Dynamics  
An end of a maneuver is denoted by a square box for the respective performance criterion. The charge on craft 2 will be equal and opposite to that of craft 1.  ...  Williams and Trivailo [13] provide a comprehensive study of the effect of different performance indices on the optimal deployment and retrieval dynamics.  ... 
doi:10.2514/1.56551 fatcat:vcztxrdfwjhndhymff62qzf3oe

Subject Index 1986

1986 Journal of Guidance Control and Dynamics  
Analysis Computation of Optimal Controls by New- ton’s Method Using a Discretized Jacobian G86-063 The Principal Minor Test for Semidefinite Matrices G86-20 Reliability, Maintainability, and Logistics  ...  Method for Nonlinear Optimal Control Problems G86-069 The Hybrid Automated Reliability Predictor G86-056 Spline-Based Distributed System Identifica- tion with Application to Large Space Antennas G86-054  ... 
doi:10.2514/3.56425 fatcat:5mei2cg6t5bs3eihjlq2cf74di

Control Strategies of Spaceplane Docking and Undocking with Other Winged Vehicle*

Alexander Nebylov, Vladimir Nebylov
2011 IFAC Proceedings Volumes  
The concept of aerospace plane (ASP) horizontal launch and landing with the assist of heavy plane or ekranoplane is analyzed 1 .  ...  The requirements to corresponding systems of motion control of both winged crafts are presented, the structure of the integrated system of relative motion control is offered.  ...  According to the fulfilled researches, the most suitable method of taking the information on parameters of linear and angular relative motion of two wing crafts at approach and docking is the use of digital  ... 
doi:10.3182/20110828-6-it-1002.02582 fatcat:ojku6xthhzgynelyr4ukxbs32a

Deep-Reinforcement-Learning-Based Semantic Navigation of Mobile Robots in Dynamic Environments [article]

Linh Kästner, Cornelius Marx, Jens Lambrecht
2020 arXiv   pre-print
Visual based navigation and high level semantics bear the potential to enhance the safety of path planing by creating links the agent can reason about for a more flexible navigation.  ...  Current navigation methods depend on preexisting static maps and are error-prone in dynamic environments.  ...  However, this form of navigation depends on the preexisting map and its performance degrades at highly dynamic environments [3] , [4] .  ... 
arXiv:2008.00516v1 fatcat:gnemrlpn4zckriarj4z6bnn7zi

A Simulation Model for a Hybrid-Electric Craft in Restricted Waters

Francesco Mauro, Ubaldo la Monaca, Alberto Marinò, Vittorio Bucci
2020 Journal of Advanced Transportation  
To reduce the pollutant emissions, the adoption of electric or hybrid-electric solutions for crafts propulsion is a suitable option for green navigation.  ...  The simulations performed with the developed simulation system are in accordance with data measured during trials on a prototype of the vessel.  ...  Acknowledgments is work was supported by ZELAG (Zero Emission Navigation LAguna di Grado) research program, funded by Regione Autonoma Friuli-Venezia-Giulia (Italy) with POR-FESR (2014-2020, asse 1.3b)  ... 
doi:10.1155/2020/5340814 fatcat:wzbjvnjhxzdojozg7hwkhukkse

Seakeeping Analysis of Planing Craft under Large Wave Height

Xiaosheng Bi, Jiayuan Zhuang, Yumin Su
2020 Water  
To obtain a reliable numerical method to simulate the sailing of planing craft in waves, Reynolds-averaged Navier–Stokes (RANS) solver and overset method are adopted.  ...  Meanwhile, the influence of speed on different navigation configurations of the improved vessel was also analyzed.  ...  Conflicts of Interest: The authors declare no conflicts of interest.  ... 
doi:10.3390/w12041020 fatcat:pd7tqvukrna6ro642iomorcihm

Vision/INS Integrated Navigation System for Poor Vision Navigation Environments

Youngsun Kim, Dong-Hwan Hwang
2016 Sensors  
The proposed method uses focal plane measurements of landmarks in order to provide position, velocity and attitude outputs even when the number of landmarks on the focal plane is not enough for navigation  ...  In order to improve the performance of an inertial navigation system, many aiding sensors can be used.  ...  on the focal plane of the camera.  ... 
doi:10.3390/s16101672 pmid:27754350 pmcid:PMC5087460 fatcat:kqmtu4jazjedrahfo75clmt6ye

3D Terrestrial Laser Technology in Sporting Craft 3D Modelling

P. Arias
2007 International Journal of Simulation Modelling  
The urgent need to increase productivity and competitiveness demands from sporting craft builders the incorporation of newer design and manufacturing technologies, as CAD/CAM and CNC machining systems.  ...  The methodology followed for data collection and data processiong is described in detail, advantages and limitations of this technique are displayed and the accuraccy of the obtained results is also estimated  ...  This study clearly shows the reliability of terrestrial laser scanning in the generation 3D surface models of pleasure craft.  ... 
doi:10.2507/ijsimm06(2)s.01 fatcat:xurkepafdvfcnndtqplktxqc3a

KISS (Keep It Sustainable and Smart): A Research and Development Program for a Zero-Emission Small Crafts

Ermina Begovic, Carlo Bertorello, Fabio De Luca, Barbara Rinauro
2021 Journal of Marine Science and Engineering  
The KISS project represents a successful example of an electric small craft with performances and a mission profile comparable to competitors with conventional propulsion.  ...  Its hull form is based on previous research conducted by the authors, and the powering performances were preliminarily predicted by CFD simulation.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/jmse10010016 fatcat:a3ogag23dncwxkl65n56nsmiu4

Deep Learning Point Cloud Odometry

Bernardo Teixeira, Hugo Silva
2021 U Porto Journal of Engineering  
of the benefits of leveraging learning-based encoding representations of real-world data is provided.  ...  Achieving persistent and reliable autonomy for mobile robots in challenging field mission scenarios is a long-time quest for the Robotics research community.  ...  Acknowledgements The authors wish to acknowledge the support of the Portuguese funding agency, FCT -Fundação para a Ciência e a Tecnologia, through PhD research grant 2020.05052.BD.  ... 
doi:10.24840/2183-6493_007.003_0006 fatcat:orrlfkowkzgsjijnl5vnlczzzm

Page 1734 of Journal of Spacecraft and Rockets Vol. 3, Issue 12 [page]

1966 Journal of Spacecraft and Rockets  
The method assumes the navigation accuracy is independent of guidance implementation accuracy, the number of observations is fixed, and the observation noise is uncorrelated.  ...  The prescribed steering law, defining the inclination of the desired thrust vector with respect to the local horizontal and desired orbital plane (or some other reference), is a function of systems optimization  ... 

Subject Index 1990

1990 Journal of Guidance Control and Dynamics  
Method for Optimal Control Problems G90-061 Functional Analysis Methods in the Study of the Optimal Transfer G90-051 Optimal Strapdown Attitude Integration Algorithms G90-049 Gain-Sensitivity Augmentation  ...  of Helicopter Hovering Dynamics on Pilot Performance G90-002 Man/ Machine Interface Effects of Biodynamic Coupling on the Human Operator Model G90-090 Cooperative Synthesis of Control and Dis- play Augmentation  ... 
doi:10.2514/3.56530 fatcat:ilb2hvh3qffodp4wp35zhcnfly

Wing-In-Ground Effect Flight Control: New Role of Automatic Systems

Alexander Nebylov
2008 IFAC Proceedings Volumes  
The aim of investigation is to define the way for operational performance improvement of the vehicles of advanced design.  ...  The statement of the main problems of equipment and software design for flight control at small altitude above the disturbed surface is performed.  ...  Only rather large WIG-craft can perform take-off and landing at stormy sea, and also float as a ship among the great sea waves. 3.  ... 
doi:10.3182/20080706-5-kr-1001.00187 fatcat:hxko4e7jg5etzhs2lfctoftjj4

Survey of orbital dynamics and control of space rendezvous

Yazhong Luo, Jin Zhang, Guojin Tang
2014 Chinese Journal of Aeronautics  
Thirdly, studies on relative navigation are briefly reviewed, and then close-range control methods including automated control, manual control, and telecontrol are analyzed.  ...  Finally, conclusions are drawn and prospects of studies on RODC are presented.  ...  Acknowledgements This study was co-supported by the National Natural Science  ... 
doi:10.1016/j.cja.2013.07.042 fatcat:av6ciouwi5gjhm2b4nhxul5kdi

Journal of Aircraft 2014 Subject Index

2014 Journal of Aircraft  
Lifting-Body Hybrid Airship C14-133 Optimization of Area Navigation Arriv- al Routes for Cumulative Noise Exposure C14-137 Measuring Systemwide Impacts of New Aircraft on the Environment C14-138 Effects  ...  of a Wing-in-Ground-Effect Craft C14-089 Computational and Experimental Vali- dation of the Active Morphing Wing C14-096 Studies in Aerodynamic Optimization Based on Genetic Algorithms C14-105 Summary  ... 
doi:10.2514/1.c033195 fatcat:jvcvdp26efg4bjm3hfa6yuo4mm
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