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Date 4-11 March 2006

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Displaying Results 1 - 25 of 475
  • Nanotube-based molecular motors

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2124 KB)  

    Summary form only given, as follows. The design, construction, and operation of electrically-driven molecular actuators and motors using nanotubes as integral components is a leading-edge endeavor in science and engineering. One design uses a multi-wall. carbon nanotube as a rotational bearing, allowing low-level voltages to fully control the angular position of a metal plate rotor. This motor, of... View full abstract»

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  • Operationally Responsive Space (ORS)

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | PDF file iconPDF (2336 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • Embryonic stem cell research

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2211 KB) |  | HTML iconHTML  

    Summary form only given, as follows. This talk will provide an overview ofth sore properties, and medical implications of humanEScels View full abstract»

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  • Hurricanes: Nature's dangerous beauties

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1554 KB) |  | HTML iconHTML  

    Summary form only given, as follows. From a fluid dynamics viewpoint, hurricanes are a fascinating and intricate system. But, as we have found out on several occasions over the past couple of years, they pack a wallop, especially for vulnerable communities that have neglected to take proper precautions. As a result, they are amongst the most studied of atmospheric phenomena, and a sophisticated ar... View full abstract»

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  • A Microscopic View of Dinosaurs

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2124 KB) |  | HTML iconHTML  

    Summary form only given, as follows. Most people can stand comfortably under the jawline of a mounted Tyrannosaurus rex or walk under the rib cage of a Brachiosaurus without bumping their heads. T. rex is as big as the largest known African elephant, and Brachiosaurus, like other great sauropods, was much larger than any land animal alive today. We are so used to the enormous size of dinosaurs tha... View full abstract»

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  • The Spitzer Space Telescope: The infrared universe revealed

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2062 KB) |  | HTML iconHTML  

    Provides an abstract of the presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. View full abstract»

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  • Project Starchaser

    Publication Year: 2006 , Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (137 KB) |  | HTML iconHTML  

    Summary form only given, as follows. Founded in 1992, Starchaser is a privately held company with a research and development and assembly and integration facility near Manchester in the UK. On 22nd November 2001 Starchaser Industries successfully launched Nova, the first privately built rocket in the world capable of carrying people into space. Current R&D projects include the development of a reu... View full abstract»

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  • SILVRCLAW II - analysis, prototype development, and testing

    Publication Year: 2006
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3258 KB) |  | HTML iconHTML  

    Enhanced robotic surface exploration is a fundamental MEPAT (Mars Exploration Program Advanced Technologies) goal for Mars exploration technology development because many surface-investigation goals require traversing significant distances in widely varying terrain conditions. SILVRCLAW (stowable, inflatable, large, vectran, rigidizable, cold-resistant, lightweight, all-terrain wheel) is an inflat... View full abstract»

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  • Improved target handoff for single cycle instrument placement

    Publication Year: 2006
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3586 KB) |  | HTML iconHTML  

    Single cycle instrument placement (SCIP) could dramatically increase the speed of various planetary rover operations. JPL is validating SCIP for use on its upcoming Mars Science Laboratory mission. Two major sources of error in the implementation submitted for validation were imprecision in selecting a distant target and error introduced while handing the target off to the rover's hazard cameras (... View full abstract»

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  • Humanoids in support of lunar and planetary surface operations

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1141 KB) |  | HTML iconHTML  

    This paper presents a vision of humanoid robots as human's key partners in future space exploration, in particular for construction, maintenance/repair and operation of lunar/planetary habitats, bases and settlements. It integrates this vision with the recent plans for human and robotic exploration, aligning a set of milestones for operational capability of humanoids with the schedule for the next... View full abstract»

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  • Mobile science platforms for impassable terrain

    Publication Year: 2006
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1916 KB) |  | HTML iconHTML  

    Some of the most scientifically interesting terrain is among the most inaccessible, presenting problems for all mobility strategies. Lava flows, for example, can have structure at all scale sizes rendering traversal via appendage or wheel difficult at best. NASA researchers have been developing an innovative mechanical structure that provides mobility in terrain unnavigable by wheeled or even legg... View full abstract»

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  • The Mars Exploration Rover surface mobility flight software driving ambition

    Publication Year: 2006
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (14894 KB) |  | HTML iconHTML  

    NASA's Mars exploration rovers' (MER) onboard mobility flight software was designed to provide robust and flexible operation. The MER vehicles can be commanded directly, or given autonomous control over multiple aspects of mobility: which motions to drive, measurement of actual motion, terrain interpretation, even the selection of targets of interest (although this mode remains largely underused).... View full abstract»

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  • A comparison of force sensing techniques for planetary manipulation

    Publication Year: 2006
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (10599 KB) |  | HTML iconHTML  

    Five techniques for sensing forces with a manipulator are compared analytically and experimentally. The techniques compared are: a six-axis wrist force/torque sensor, joint torque sensors, link strain gauges, motor current sensors, and flexibility modeling. The accuracy and repeatability of each technique is quantified and compared. The relative complexity and the impact on flight design of each t... View full abstract»

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  • Concept for coring from a low-mass rover

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1495 KB) |  | HTML iconHTML  

    Future Mars missions such as the Mars Sample Return (MSR) mission may benefit from core sample acquisition from a low-mass rover where the rover cannot be assumed to be stationary during a coring operation. Manipulation from Mars rovers is currently done under the assumption that the rover acts as a stationary, stable platform for the arm. An MSR mission scenario with a low-mass rover has been dev... View full abstract»

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  • Vision-based end-effector position error compensation

    Publication Year: 2006
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (500 KB) |  | HTML iconHTML  

    This paper describes a computationally efficient algorithm that provides the ability to accurately place an arm end-effector on a target designated in an image using low speed feedback from a fixed stereo camera. The algorithm is robust to visual occlusion of the end-effector and does not require high fidelity calibration of either the arm or stereo camera. The algorithm works by maintaining an er... View full abstract»

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  • Global Precipitation Measurement mission - architecture and mission concept

    Publication Year: 2006
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (811 KB) |  | HTML iconHTML  

    The Global Precipitation Measurement (GPM) mission is a collaboration between the National Aeronautics and Space Administration (NASA) and the Japanese Aerospace Exploration Agency (JAXA), and other US and international partners, with the goal of monitoring the diurnal and seasonal variations in precipitation over the surface of the Earth. These measurements will be used to improve current climate... View full abstract»

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  • Herschel/Planck program - spacecraft design solutions for two science missions

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (603 KB) |  | HTML iconHTML  

    This paper describes the technical challenges of the two science missions Herschel, an observatory-type mission, and Planck, a survey mission, are combined in one program within ESAs long-term science program. Herschel, an observatory mission, will target the largely unexplored infrared and sub-millimeter part of the electromagnetic spectrum from 60 to 670 microns with three scientific instruments... View full abstract»

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  • An architecture program for the robotic exploration of Venus

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1569 KB) |  | HTML iconHTML  

    To date, most space exploration has focused on the solar system beyond Earth's orbit while the inner solar system between Earth and the Sun has received only limited attention. In this region, Venus, with a similar size and mass to Earth but with a very different environment, is probably the most interesting body. The most notable feature of Venus is the extreme runaway greenhouse effect. This phe... View full abstract»

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  • Exploring the possibilities: Earth and space science missions in the context of exploration

    Publication Year: 2006
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (859 KB) |  | HTML iconHTML  

    According to Dr. Edward J. Weiler, Director of the Goddard Space Flight Center, "Exploration without science is tourism". At the American Astronautical Society's 43rd Annual Robert H. Goddard Memorial Symposium it was quite apparent to all that NASA's current Exploration Initiative is tightly coupled to multiple scientific initiatives: exploration will enable new science and science will enable ex... View full abstract»

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  • Navigator Program: exploring new worlds

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2270 KB) |  | HTML iconHTML  

    NASA's Navigator Program comprises a suite of interrelated missions that will discover and characterize planetary systems and Earth-like planets around nearby stars. The missions are designed to build on each other's success, each providing an essential step forward toward the goal of discovering habitable planets and life. The missions in the Navigator Program and their relation to each other are... View full abstract»

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  • Design of a long endurance Titan VTOL vehicle

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1617 KB) |  | HTML iconHTML  

    Saturn's moon Titan promises insight into numerous key scientific questions, many of which can be investigated only by in situ exploration of its surface and atmosphere. This paper presents research on a vertical takeoff and landing (VTOL) vehicle designed to conduct a scientific investigation of Titan's atmosphere, clouds, haze, surface, and any possible oceans. Multiple options for vertical take... View full abstract»

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  • GeoSTAR: developing a new payload for GOES satellites

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3429 KB) |  | HTML iconHTML  

    The geostationary synthetic thinned aperture radiometer (GeoSTAR) is a new concept for a microwave sounder, intended to be deployed on NOAA's next generation of geostationary weather satellites, the GOES-R series - due to first launch in 2012. This will fill a serious gap in our remote sensing capabilities of long standing - a key capability that NOAA is book keeping at the top of its list of "pre... View full abstract»

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  • Architecting space exploration campaigns: a decision-analytic approach

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (769 KB) |  | HTML iconHTML  

    Under its vision for space exploration, NASA is moving from designing single space missions to architecting whole exploration campaigns. In comparing campaign options, assessing the value of flexibility to respond to future discoveries and adapt to uncertainties is critical. This paper shows the benefits of decision analysis techniques for campaign design and evaluation. Important concepts of deci... View full abstract»

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  • Human spaceflights will extend regulatory and legal framework governing civil aviation

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (221 KB) |  | HTML iconHTML  

    Sub orbital flights offer an important approach to the evolution of the market and demonstrate the safety of space flights and the profitability of space tourism. By contrast, aviation is a global industry, largely commercial, involving the range of activities from engineering design to marketing. Aviation has very high safety levels developed over decades of experience carrying billions of passen... View full abstract»

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  • What Titan is really like: in-situ measurements of the Titan environment by the Huygens probe

    Publication Year: 2006
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (868 KB) |  | HTML iconHTML  

    The dramatic findings of the Cassini mission, and especially the Huygens probe, at Titan confirm it to be a planetary target of great interest in many scientific fields. This paper reviews in particular the meteorological and geological results of Huygens as they pertain to future missions View full abstract»

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