Results 91 to 100 of about 23,098 (247)
Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
Comparative analysis of the designs and implementation of vehicles based on reactive propulsion proposed during the nineteenth and beginning of the twentieth centuries [PDF]
Examination of the presently known historical scientific literature related to the problem of reactive flight indicates that considerable attention had already been given to the idea of reactive propulsion in the nineteenth century; about thirty designs ...
Sokolskiy, V. N.
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Crater Observing Bioinspired Rolling Articulator (COBRA)
Advanced Intelligent Systems, Volume 8, Issue 3, March 2026.Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame +4 more
wiley +1 more source
Advanced rocket propulsion [PDF]
Existing NASA research contracts are supporting development of advanced reinforced polymer and metal matrix composites for use in liquid rocket engines of the future.
Obrien, Charles J.
core +1 more source
Low loss injector for liquid propellant rocket engines [PDF]
, 1986 A low pressure loss injector element is disclosed for the main combustion chamber of a rocket engine which includes a lox post terminating in a cylindrical barrel. Received within the barrel is a lox plug which is threaded in the lox post and includes an
Vonpragenau, G. L.
core +1 more source
Micro/Nanorobot for Drug Delivery—A Review of Material Selections
Advanced NanoBiomed Research, Volume 6, Issue 3, March 2026.This review explores material strategies for biomedical micro/nanorobots, emphasizing their roles in propulsion, navigation, drug delivery, and biodegradability. It highlights advancements in metallic, polymeric, and hybrid materials, while addressing clinical translation challenges such as toxicity, immune response, and manufacturability.
Xiaozhuo Wu, Bingyun Li, Malcolm Xing
wiley +1 more source
Trace MA+ Accelerates the Degradation of Perovskite Solar Cells at Elevated Temperatures
Information &Functional Materials, Volume 3, Issue 1, Page 3-7, March 2026.We investigate how the A‐site cation influences the morphology and optoelectronic properties of perovskite films, and consequently, the operational stability of devices under continuous light illumination at elevated temperature. ABSTRACT Methylammonium (MA+) is the most widely adopted A‐site cation for high‐efficiency perovskite solar cells.
Jiazheng Zhou +11 more
wiley +1 more source
Fiber-reinforced ceramic composites for Earth-to-orbit rocket engine turbines [PDF]
Fiber reinforced ceramic matrix composites (FRCMC) are emerging materials systems that offer potential for use in liquid rocket engines. Advantages of these materials in rocket engine turbomachinery include performance gain due to higher turbine inlet ...
Brockmeyer, Jerry W. +1 more
core +1 more source
, 1975 A space vehicle having an improved ascent configuration for use in traveling in space is presented. Components of the vehicle are: (1) a winged orbiter having an elongater fuselage and rearwardly directed main engines fixed to the fuselage; (2) an ...
Vonpragenau, G. L.
core +1 more source
Cold Climate Wind: Challenges, Technological Solutions and Policy
WIREs Energy and Environment, Volume 15, Issue 1, March 2026.Operating wind farms in cold climates creates unique challenges for turbine designers, owners, and operators. Solving these challenges requires specific technological and policy solutions at all levels. ABSTRACT Cold‐climate wind power represents a major subset of onshore global capacity, with approximately one third of existing installations located ...
Timo Karlsson +7 more
wiley +1 more source