Results 51 to 60 of about 3,658 (232)

Investigation of critical burning of fuel droplets [PDF]

open access: yes
The steady combustion characteristics of droplets were considered in combustion chamber environments at various pressures, flow conditions, and ambient oxidizer concentrations for a number of hydrocarbon fuels.
Chanin, S., Faeth, G. M.
core   +7 more sources

Study and Characterization of Intermediates Used in the Production of the Oxidizer Ammonium Dinitramide

open access: yesPropellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 95-105, July 2025.
ABSTRACT The aerospace industry is continually seeking materials that offer higher performance and lower environmental impact. In chemical propulsion, ammonium dinitramide (ADN) represents a significant advance in this direction as a potential replacement for ammonium perchlorate in solid propellant formulations.
Josiane R. C. Silva   +6 more
wiley   +1 more source

Short Overview on the Development of Advanced Green Monopropellants for Satellite Propulsion Applications—Status Summer 2025

open access: yesAerospace
In the last three decades, significant progress has been made to find, develop, test, and qualify advanced green monopropellants which have the potential to replace hydrazine in satellite propulsion to a large extent due to their lower health risks ...
Helmut K. Ciezki
doaj   +1 more source

Low thrust and low power propulsion systems options for small satellites

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2020
The present work focuses on the study of low thrust propulsion systems. Cold gas, thermal and monopropellant systems with a blow down depressurisation mode have been taken in consideration in this study.
Redha Amri
doaj   +1 more source

Influence of AP Particle Size on Burning Characteristics of HMX/AP Propellants Supplemented with Fe2O3

open access: yesPropellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
ABSTRACT Nitramine propellants have attracted considerable attention in the domain of solid rockets and gun propulsion because of their energetic and smokeless features. Ammonium perchlorate (AP) is the widely used oxidizer in propellants owing to the excellent burning characteristics.
Makoto Kohga   +2 more
wiley   +1 more source

Lab-Scale Thermal Decomposition of Hydrogen Peroxide as Green Propellant over Low-Cost Catalysts Based on Copper Deposited on Different Supports

open access: yesAerospace
The thermal decomposition of hydrogen peroxide (H2O2) as a promising green propellant was performed over free-noble metallic-based catalysts deposited on abundant supports.
Imane Remissa   +5 more
doaj   +1 more source

Dinitroacetylene: Can It be Made?

open access: yesPropellants, Explosives, Pyrotechnics, Volume 50, Issue 4, April 2025.
With a predicted record‐high heat of formation, energy density, and outstanding performance as a rocket propellant, dinitroacetylene stretches the imagination for what is possible in terms of organic chemical explosives and monopropellants. In this study, we employ quantum chemical methods to assess the isolability and kinetic stability of this ...
Lara Harter   +2 more
wiley   +1 more source

Effect of Structural Materials on Monopropellant Thruster Propulsion Performance in Micro Scale

open access: yesAerospace, 2023
This paper reports on the effect of structural materials on heat loss-associated propulsion performance degradation of monopropellant thrusters in the micro scale.
Jeongmoo Huh, Ki Sun Park
doaj   +1 more source

Poromechanical approach to blast‐induced dynamic fracture in concrete

open access: yesStructural 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

open access: yesAdvanced 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

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