Results 51 to 60 of about 11,647 (229)

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, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source

Polymer Combustion as a Basis for Hybrid Propulsion: A Comprehensive Review and New Numerical Approaches

Energies, 2011
Hybrid Propulsion is an attractive alternative to conventional liquid and solid rocket motors. This is an active area of research and technological developments.
Vasily Novozhilov, Hui Wang, Jun Liu, Keiichi Ishiko, Toru Shimada, Paul Joseph   +5 more
doaj   +1 more source

Hybrid Rocket Engine Ignition and Control [PDF]

, 2020
Control of a hybrid rocket engine is dependent upon a robust system capable of executing commands at precise times. In order to accomplish this, hardware systems must be in place to control the flow of a pressurized gas and provide feedback to launch ...
Blampied, Trevor, Johnson, Megan, Letourneau, Benjamin, Pham, Thomas   +3 more
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

Dynamic Testing of a Hybrid-Propellant Water-Breathing Ram Rocket in Underwater Cruise Conditions

Journal of Marine Science and Engineering
High-speed submerged marine vehicles, such as torpedoes, traveling at velocities of an order of 100 m/s and above, require powerful propulsion to overcome the tremendous hydrodynamic drag.
Sagi Dinisman, Nachum E. Eisen, Alon Gany   +2 more
doaj   +1 more source

Harnessing Satellite Constellations as Signals of Opportunity for an Enhanced Specification of the Satellite Drag Environment in the Critical LEO Regime

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Enhancing the accuracy of orbit predictions for low‐Earth orbit (LEO) satellites and debris is vitally important for satellite owner/operators dedicated to ensuring the safety and sustainability of the LEO environment. Presently, the largest source of error in orbit predictions stems from uncertainties in the estimation of thermospheric mass ...
D. J. Fitzpatrick, E. K. Sutton, M. D. Pilinski, S. E. Palo   +3 more
wiley   +1 more source

Tandem Takeoff: Powering Tomorrow with Industrial‐Grade Perovskite/Silicon Solar Cells

Advanced Energy Materials, Volume 16, Issue 5, 4 February 2026.
Perovskite/silicon tandem solar cells have recently achieved certified power conversion efficiencies of 34.85%, far exceeding the Shockley‐Queisser limit for single‐junction silicon and standalone perovskite cells. This review highlights the latest advances in the design, integration, and optimization of perovskite top cells for monolithic tandem ...
Maria Vasilopoulou, Di Huang, Jue Gong, Faming Li, Hao Zhang, Yinqing Sun, Lin Mao, Ermioni Polydorou, Ioannis G. Aviziotis, Leonidas C. Palilis, Onurcan Kaya, Stephan Roche, Jordi Arbiol, Dimitrios Davazoglou, Emmanuel Kymakis, Lei Liu, Kuan Sun, Abd Rashid bin Mohd Yusoff, Mingzhen Liu, Mohammad Khaja Nazeeruddin   +19 more
wiley   +1 more source

Active space debris removal by a hybrid propulsion module [PDF]

, 2013
During the last 40 years, the mass of the artificial objects in orbit increased quite steadily at the rate of about 145 metric tons annually, leading to a total tally of approximately 7000 metric tons.
Anselmo, L., Belokonov, I.V., Bernelli, F., Bonnal, C., Branz, F., Chiesa, Sergio, De Luca, L.T., Francesconi, A., Grassi, M., Maggi, F., Pardini, C., Pavarin, D., Tadini, P., Trushlyakov, V., Viola, Nicole   +14 more
core   +1 more source

Boosting Green Propellants: The Sustainable Armored Grain for Hybrid Rocket Propulsion

, 2023
In the last years, the armored grain, a paraffin-based fuel reinforced by a 3D-printed polymeric gyroidlike reinforcement, has been identified as a promising fuel for hybrid rocket engines. In this work, the already promising armored grain concept is improved by developing a greener version.
Bisin, R., Pagliacci, V., Paravan, C.
openaire   +2 more sources

Experimental investigation of paraffin-based fuels for hybrid rocket propulsion [PDF]

Progress in Propulsion Physics, 2013
Solid fuels for hybrid rockets were characterized in the framework of a researchprojectaimedtodevelopanewgenerationofsolidfuels,combining at the same time good mechanical and ballistic properties. Original techniques were implemented in order to improve para©n-based fuels.
GALFETTI, LUCIANO, MEROTTO, LAURA, BOIOCCHI, MATTEO, MAGGI, FILIPPO, DE LUCA, LUIGI   +4 more
openaire   +1 more source