Results 91 to 100 of about 217,272 (213)
Hot air ballon deceleration and recovery system Patent [PDF]
, 1970 Development and characteristics of hot air balloon deceleration and recovery ...
Dunavant, J. C., Scher, S. H.
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A Bilevel Optimal Control Method and Application to the Hybrid Electric Vehicle
Optimal Control Applications and Methods, EarlyView.Schematic representation of the Macro‐Micro method. ABSTRACT In this article we present a new numerical method based on a bilevel decomposition of optimal control problems. A strong connection between the proposed method and the classical indirect multiple shooting method is shown in the regular case, thanks to a link between the Bellman's value ...
Olivier Cots +3 more
wiley +1 more source
Design issues for lunar in situ aluminum/oxygen propellant rocket engines [PDF]
Design issues for lunar ascent and lunar descent rocket engines fueled by aluminum/oxygen propellant produced in situ at the lunar surface were evaluated.
Meyer, Michael L.
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ChemistryOpen, EarlyView.Biochar derived from woody alien vegetation has been used as a support material for proton exchange membrane fuel cells. This study focuses on the prospects of using biochar specifically from alien vegetation as an alternative for carbonaceous support material to convert and store electrochemical energy.
Alunge Gift Sobekwa +4 more
wiley +1 more source
An experimental study on residual stress relaxation in low‐cycle fatigue of Inconel 718Plus
Fatigue &Fracture of Engineering Materials &Structures, Volume 46, Issue 1, Page 310-324, January 2023., 2023 Abstract Residual stress relaxation induced by the application of mechanical loads is determined by the nature of residual stress, the elasto‐plastic material properties, and the type of applied load. Despite the importance of the first load cycle, analytical models available in the literature generally assumed residual stress relaxation as a ...
Vito Dattoma +2 more
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Active Optical Remote Sensing Sensors and Instrumentation for NASAs Future Earth and Space Science Measurements/Missions [PDF]
Active optical (Laser/Lidar) measurement techniques are critical for the future National Aeronautics and Space Administration (NASA) Earth, Planetary Science, Exploration, and Aeronautics measurements.
Singh, Upendra N.
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Toward a forest biomass reference measurement system for remote sensing applications
Global Change Biology, Volume 29, Issue 3, Page 827-840, February 2023., 2023 A permanent, global, in situ, site‐based forest biomass reference measurement system relying on ground data of the highest possible quality is needed to validate products from biomass‐related Earth Observation missions. Here, we have assembled a list of almost 200 high‐quality sites.
Nicolas Labrière +12 more
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Lunar lander conceptual design [PDF]
A conceptual design is presented of a Lunar Lander, which can be the primary vehicle to transport the equipment necessary to establish a surface lunar base, the crew that will man the base, and the raw materials which the Lunar Station will process.
Carini, John +7 more
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Polymer Composites, EarlyView.Sequential coupling of motion and heat‐transfer of long‐discontinuous fiber reinforced pellets in a single screw extruder. Abstract Single screw extrusion is widely used in material pre‐compounding, extrusion additive manufacturing, and injection molding.
Vasudha Kapre +2 more
wiley +1 more source
Ibis, Volume 165, Issue 1, Page 190-203, January 2023., 2023 Several factors may drive bird nest‐site selection, including predation risk, resource availability, weather conditions and interaction with other individuals. Understanding the drivers affecting where birds nest is important for conservation planning, especially where environmental change may alter the distribution of suitable nest‐sites.
Mia Momberg +6 more
wiley +1 more source