Results 71 to 80 of about 5,407 (249)
Poromechanical approach to blast‐induced dynamic fracture in concrete
Structural Concrete, Volume 26, Issue 2, Page 1770-1790, April 2025.Abstract This study introduces a novel poromechanical approach to analyze blast‐induced dynamic fracture in concrete considering gaseous kinetics. The objective is to establish a framework for examining the fracture mechanisms during demolition.
Stanislav Zažirej +2 more
wiley +1 more source
Ionic Liquid‐Filled Polyamide Microcapsules Obtained by Interfacial Polymerization
Advanced Materials Interfaces, Volume 12, Issue 1, January 6, 2025.Description of the first synthesis and characterization of ionic liquid‐filled microcapsules with a polyamide shell material obtained by an interfacial polymerization process. This process requires no surfactants and features inexpensive, low‐toxicity monomers and solvents, as well as an exceptionally high core‐to‐shell weight ratio, enabling a wide ...
Robin Scholl, Dominic Freudenmann
wiley +1 more source
Hydrazine Monopropellant Reciprocating Engine Development [PDF]
Journal of Engineering for Industry, 1979 A hydrazine-fueled piston-type engine for providing 11.2 kW (15 hp) has been developed to satisfy the need for an efficient power supply in the range from 3.7 to 74.6 kW (5 to 100 hp) where existing nonair-breathing power supplies such as fuel cells or turbines are inappropriate.
openaire +1 more source
Propellants, Explosives, Pyrotechnics, Volume 49, Issue 5, May 2024.Abstract This study demonstrates, for the first time ever, the ability to grow, in an on‐command fashion, porosity within a granular composite energetic material to effect a change in energy output rate. Specifically, the study investigates the change in burning rates of ammonium perchlorate composite propellants as a result of porosity created in situ
Justin A. Lajoie +4 more
wiley +1 more source
Global Stability of a Premixed Reaction Zone (Time-Dependent Liñan’s Problem) [PDF]
, 1990 Global stability properties of a premixed, three-dimensional reaction zone are considered. In the nonadiabatic case (i.e., when there is a heat exchange between the reaction zone and the burned gases) there is a unique, spatially one-dimensional steady ...
Adams Robert A. +10 more
core +2 more sources
Making Catalyst and Preparing Catalyst Bed for Hydrazine Decomposition in Low-Thrust Monopropellant Thrusters [PDF]
فناوری در مهندسی هوافضا, 2018 Monopropellant thruster of attitude control system is a requirement for the development and functionalization of satellites in space, which have expensive and high-tech technology.
Mohammad Reza Salimi, Hadiseh Karimaei
doaj
Monopropellant Propulsion System Design using Multidisciplinary Design Optimization, Sequential Design Method, and Comparing Results [PDF]
فصلنامه علوم و فناوری فضایی, 2017 The hydrazine propulsion system is one of the most widely used monopropellantpropulsion systems. This low-cost and low mass system is used for the attitude control ofsatellites due to its high specificity and rapid response.For this purpose, in the ...
Hojat Taei +2 more
doaj
Ignition means for monopropellant Patent [PDF]
, 1967 Catalyst bed ignition system for hydrazine ...
Evans, D. D., Lee, D. H.
core +1 more source
Multidisciplinary Design Optimization and Analysis of Hydrazine Monopropellant Propulsion System
International Journal of Aerospace Engineering, 2015 Monopropellant propulsion systems are widely used especially for low cost attitude control or orbit correction (orbit maintenance). To optimize the total propulsion system, subsystems should be optimized.
Amirhossein Adami +4 more
doaj +1 more source
Trajectory-correction propulsion system Patent [PDF]
, 1966 Spacecraft trajectory correction propulsion ...
Schmitz, B. W., Smith, W. W.
core +1 more source