scholarly journals Prototyping of Lunabotic Excavator Robotic System

Robotics ◽  
2013 ◽  
pp. 501-535
Author(s):  
Nicolae Gari ◽  
Xingguo Xiong
Keyword(s):  
Distribution System ◽  
Steering System ◽  
Robotic System ◽  
Telecommunication System ◽  
Supply And Distribution ◽  
Actuation System ◽  
Switch Control ◽  
System Data ◽  
Wheeled Vehicles ◽  
System Power

In this chapter, the design and prototyping of a lunar excavator robotic system is proposed. The lunabotic excavator was developed for participating in 2010 NASA Lunar Excavating Competition. Being remotely controlled by operator using a computer via Wi-Fi telecommunication, the autonomous lunabotic excavator can perform the tasks of excavating regolith stimulant, collecting it in the dumpster, and dumping it into the assigned collector box. The design and prototyping of the lunabotic excavator robotic system are discussed. The excavator includes multiple modules including mechanical frames, front/rear wheels, excavating conveyor, steering system, dumping system, power supply and distribution system, actuation system, switch control system, data acquisition system, and telecommunication system. The lunabotic excavator robotic system has been implemented. The excavator can perform the expected functions as designed. The lunabotic excavator designs in NASA Lunar Excavating Competition may lead to new and effective robotic excavators for planetary exploration. The design and prototyping strategies used in the lunabotic excavator may be extended to other ground wheeled vehicles or remotely-controlled robotic systems as well.

Prototyping of Lunabotic Excavator Robotic System

2012 ◽  
pp. 217-251
Author(s):  
Nicolae Gari ◽  
Xingguo Xiong
Keyword(s):  
Distribution System ◽  
Steering System ◽  
Robotic System ◽  
Telecommunication System ◽  
Supply And Distribution ◽  
Actuation System ◽  
Switch Control ◽  
System Data ◽  
Wheeled Vehicles ◽  
System Power

In this chapter, the design and prototyping of a lunar excavator robotic system is proposed. The lunabotic excavator was developed for participating in 2010 NASA Lunar Excavating Competition. Being remotely controlled by operator using a computer via Wi-Fi telecommunication, the autonomous lunabotic excavator can perform the tasks of excavating regolith stimulant, collecting it in the dumpster, and dumping it into the assigned collector box. The design and prototyping of the lunabotic excavator robotic system are discussed. The excavator includes multiple modules including mechanical frames, front/rear wheels, excavating conveyor, steering system, dumping system, power supply and distribution system, actuation system, switch control system, data acquisition system, and telecommunication system. The lunabotic excavator robotic system has been implemented. The excavator can perform the expected functions as designed. The lunabotic excavator designs in NASA Lunar Excavating Competition may lead to new and effective robotic excavators for planetary exploration. The design and prototyping strategies used in the lunabotic excavator may be extended to other ground wheeled vehicles or remotely-controlled robotic systems as well.

ITER Coil Power Supply and Distribution System

2011 ◽  
Author(s):  
J. Tao ◽  
I. Benfatto ◽  
J. K. Goff ◽  
A. Mankani ◽  
F. Milani ◽  
...  
Keyword(s):  
Power Supply ◽  
Distribution System ◽  
Supply And Distribution ◽  
Coil Power Supply

Effectiveness of the running system of a wheeled vehicle

2020 ◽  
pp. 16-22
Author(s):  
D.A. Dubovik
Keyword(s):  
Steering Wheel ◽  
Steering Control ◽  
Control Effectiveness ◽  
Power Drive ◽  
Running System ◽  
Wheeled Vehicle ◽  
Curvilinear Motion ◽  
Wheeled Vehicles ◽  
System Power ◽  
Effectiveness Coefficient

A method for quantitative assessment of the effectiveness of the running system of wheeled vehicles for the general case of curvilinear motion is proposed. An expression is obtained for calculating the coefficient of efficiency of the running system of a wheeled vehicle, taking into account the parameters of the power and steering wheel drives. The results of evaluating the effectiveness of the running system of an off-road vehicle with a wheel arrangement of 8Ѕ8 and two front steerable axles are presented. Keywords: wheeled vehicle, running system, power drive, drive wheels, steering control, effectiveness, coefficient of efficiency. [email protected]

Development and Integration of the Dual Fuel Combustion System for the MGT Gas Turbine Family

2021 ◽  
Author(s):  
Bernhard Ćosić ◽  
Frank Reiss ◽  
Marc Blümer ◽  
Christian Frekers ◽  
Franklin Genin ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Distribution System ◽  
Gas Turbines ◽  
Liquid Fuel ◽  
Fuel Injection ◽  
Liquid Fuels ◽  
Dual Fuel ◽  
Gaseous Fuels ◽  
Supply And Distribution ◽  
Industrial Gas Turbines

Abstract Industrial gas turbines like the MGT6000 are often operated as power supply or as mechanical drives. In these applications, liquid fuels like 'Diesel Fuel No.2' can be used either as main fuel or as backup fuel if natural gas is not reliably available. The MAN Gas Turbines (MGT) operate with the Advanced Can Combustion (ACC) system, which is capable of ultra-low NOx emissions for gaseous fuels. This system has been further developed to provide dry dual fuel capability. In the present paper, we describe the design and detailed experimental validation process of the liquid fuel injection, and its integration into the gas turbine package. A central lance with an integrated two-stage nozzle is employed as a liquid pilot stage, enabling ignition and start-up of the engine on liquid fuel only. The pilot stage is continuously operated, whereas the bulk of the liquid fuel is injected through the premixed combustor stage. The premixed stage comprises a set of four decentralized nozzles based on fluidic oscillator atomizers, wherein atomization of the liquid fuel is achieved through self-induced oscillations. We present results illustrating the spray, hydrodynamic, and emission performance of the injectors. Extensive testing of the burner at atmospheric and full load high-pressure conditions has been performed, before verification within full engine tests. We show the design of the fuel supply and distribution system. Finally, we discuss the integration of the dual fuel system into the standard gas turbine package of the MGT6000.

The business of water: going the corporate way the case of Manila water

2011 ◽  
Vol 6 (4) ◽  
Author(s):  
Virgilio C. Rivera
Keyword(s):  
Water Supply ◽  
Water Availability ◽  
Distribution System ◽  
Corporate Strategy ◽  
Profit Model ◽  
The Past ◽  
Supply And Distribution ◽  
Service Coverage ◽  
Virtuous Cycle

Prior to Manila Water's entry into the East Zone as MWSS's concessionaire in 1997, the water supply and distribution system was characterized by low service coverage, high levels of leakage due to pilferage and deteriorating pipes, limited water availability and poor operating efficiencies. This presentation details how the MWSS PPP framework, coupled with Manila Water's multi-pronged, corporate approach, has been key to reversing the sorry state which Metro Manila's East Zone found itself in before 1997. Crucial to the success of Manila Water was the adoption of a multi-pronged corporate strategy composed of five interrelated variables: (1) Profit Model, (2) Market/Customer, (3) Resources, (4) Systems and Processes and (5) Talent and Organization. The presentation explains how these factors have come together to bring out the “virtuous cycle” in the East Zone. The numerous achievements of Manila Water over the past thirteen years, which are highlighted in the last section of the presentation, have been directly attributed to the successful corporate strategy employed by Manila Water.

The Water Supply and Distribution System of the Nabataean City of Petra (Jordan), 300 bc– ad 300

2005 ◽  
Vol 15 (1) ◽  
pp. 93-109 ◽  
Author(s):  
Charles R. Ortloff
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Maximum Flow ◽  
Living Standard ◽  
City Development ◽  
Trade Networks ◽  
Supply And Distribution ◽  
Design Function

The water supply and distribution system of the Nabataean city of Petra in southwestern Jordan has been explored and mapped. Analysis of the system indicates exploitation of all possible water resources using management techniques that balance reservoir storage capacity with continuous flow pipeline systems to maintain a constant water supply throughout the year. Nabataean Petra was founded c. 300 bc; urban development progressed with later Roman administration of the city starting at ad 106; Byzantine occupation continued to the seventh century ad. Trade networks that extended throughout much of the ancient Near East and Mediterranean world intersected at Petra, and brought not only strategic and economic prominence, but also impetus to develop water resources fully to sustain demands of increasing population and city elaboration. City development was influenced by artistic, cultural and technological borrowings from Seleucid, Syro-Phoenician, Greek and Roman civilizations; the Petra water-distribution system included hydraulic technologies derived from these contacts as well as original technical innovations that helped to maintain the high living standard of city dwellers throughout the centuries. Analysis of the Nabataean water network indicates design criteria that promote stable flows and use sequential particle-settling basins to purify potable water supplies. They also promote open channel flows within piping at critical (maximum) flow rates that avoid leakage associated with pressurized systems and have the design function to match the spring supply rate to the maximum carrying capacity of a pipeline. This demonstration of engineering capability indicates a high degree of cognitive skill in solving complex hydraulic problems to ensure a stable water supply and may be posited as a key reason behind the many centuries of flourishing city life.

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