Results 61 to 70 of about 21,745 (234)

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

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

Synergistic Engineering of Local Coordination and Electronic Modulation by CoSx Nanoparticles Dictates the Oxygen Reduction Pathway of Cobalt Single‐Atom Catalysts in Acidic Media

Carbon Neutralization, Volume 5, Issue 3, May 2026.
An electron structure modulation engineering strategy is developed by tuning the first coordination shell and leveraging synergistic effects with adjacent nanoparticles of Co single atoms. The CoS@Co–N2S2 catalyst achieves an average H2O2 selectivity of 88% (0.3–0.55 V), whereas CoS2@Co–NS3 exhibits 52% 4e− selectivity.
Yan Cheng, Zhengyi Guo, Morigen Bao, Bo Cao, Jun Zhang, Lele Peng   +5 more
wiley   +1 more source

Numerical model for hybrid rocket internal ballistic

, 2013
In order to predict the propulsion characteristic of an hybrid rocket, the knowledge of its internal ballistic is essential. The purpose of this work is to write a numerical code, in FORTRAN environment, in order to predict and analyze the propulsion ...
PONTI, FABRIZIO, BERTACIN, ROBERTO, Fabrizio Ponti, FEDELE, DOMENICO, CAVINA, NICOLO', Domenico Fedele, Nicolo Cavina, Adriano Annovazzi, Roberto Bertacin   +8 more
core   +1 more source

Advancing Europe’s Hybrid Rocket Engine Technology with Paraffin and LOX [PDF]

, 2019
Hybrid rocket engine technology has been advanced enormously at European universities, research institutions and companies in the last decade. New fuels like paraffin-based mixtures have been developed in order to increase regression rate which enables ...
Schmierer, Christian, Tomilin, Konstantin, Kobald, Mario, Fischer, Ulrich, Petrarolo, Anna, Hertel, Ferdinand   +5 more
core   +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

Advanced Composite Technologies for High‐Performance Sports Equipment: Materials, Manufacturing, and Sustainability Perspectives

Polymers for Advanced Technologies, Volume 37, Issue 5, May 2026.
ABSTRACT Advanced composite materials have become the leading material platform for high‐performance sports equipment, enabling superior strength‐to‐weight performance, stiffness tailoring, and enhanced functional integration compared with conventional materials. This review summarizes state‐of‐the‐art developments across multiple sporting disciplines,
Alhayat Getu Temesgen, Ümit Koç, Jörg Kaufmann, Holger Cebulla, Ercan Aydoğmuş, Hasan Arslanoğlu   +5 more
wiley   +1 more source

Propulsion system design of 1 kN thrust hybrid rocket

, 2021
LAUREA MAGISTRALELe più recenti innovazioni in ambito spaziale sono volte ad implementare diverse tecnologie missilistiche volte a rendere le missioni spaziali più sicure, più semplici ed efficienti.
GUVENC, CEREN CANSU
core  

Cobalt‐Based Metal Hybrid Encapsulated Micro‐Aluminum for Tailoring Combustion in Composite Solid Propellants

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen, Chen Peng, Lin Fu, Fan Cui, Wenqi Zhu, Yichen Li, Lei Xiao, Jun Di, Guigao Liu, Wei Jiang, Hongfeng Ji, Gazi Hao   +11 more
wiley   +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