Results 1 to 10 of about 35 (30)
Examining Metal Additives in a Marine Hybrid-Propellant, Water-Breathing Ramjet [PDF]
Journal of Marine Science and Engineering, 2022 This research focuses on theoretically and experimentally evaluating the performance of a metallized hybrid-propellant, water-breathing ramjet. The aluminum and/or magnesium particles added to a polymeric (polyester) fuel grain are hydro-reactive, using ...
Nachum E. Eisen, Alon Gany
doaj +4 more sources
Dynamic Testing of a Hybrid-Propellant Water-Breathing Ram Rocket in Underwater Cruise Conditions
Journal of Marine Science and EngineeringHigh-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 +2 more
doaj +3 more sources
Conceptual Design of An Underwater Vehicle Powered by Water-breathing Ramjet
Journal of the Korean Society of Propulsion Engineers, 2014 Jaeryeong Um +3 more
openaire +4 more sources
Historical and current usage of per‐ and polyfluoroalkyl substances (PFAS): A literature review
American Journal of Industrial Medicine, Volume 66, Issue 5, Page 353-378, May 2023., 2023 Abstract Background Per‐ and polyfluoroalkyl substances (PFAS) have uniquely useful chemical and physical properties, leading to their extensive industrial, commercial, and consumer applications since at least the 1950s. Some industries have publicly reported at least some degree of information regarding their PFAS use, while other industries have ...
Linda G. T. Gaines
wiley +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 The air‐breathing engines, commonly known as Supersonic Combustor Ramjet (SCRAMJET) engines, are one of the most prominent technologies among researchers due to their high thrust‐to‐weight ratio. The researchers are constantly making efforts for improved performance of the combustor under the required boundary conditions.
Namrata Bordoloi +3 more
wiley +1 more source
Theoretical Performance Evaluation of a Marine Solid Propellant Water-Breathing Ramjet Propulsor [PDF]
Journal of Marine Science and Engineering, 2019 This work analyzes and presents theoretical performance of a marine water-breathing ramjet propulsor. A conceptual scheme of the motor is shown, the equation of thrust is presented, and the dependence on cruise velocity and depth are discussed. Different propellant compositions, representing a wide variety of formulations suitable for propelling a ...
Nachum E. Eisen, Alon Gany
openaire +1 more source
The Impact on the Ozone Layer of a Potential Fleet of Civil Hypersonic Aircraft
Earth's Future, Volume 8, Issue 10, October 2020., 2020 Abstract The aeronautical community is currently researching technology that might lead to commercial hypersonic aircraft that would cruise at Mach 5–8 in the middle or upper stratosphere and would transfer passengers from London to New York or from Los Angeles to Tokyo in just a couple of hours.
Douglas Kinnison +4 more
wiley +1 more source
Exergy Analysis in Hydrogen‐Air Detonation
Journal of Applied Mathematics, Volume 2012, Issue 1, 2012., 2012 The main goal of this paper is to analyze the exergy losses during the shock and rarefaction wave of hydrogen‐air mixture. First, detonation parameters (pressure, temperature, density, and species mass fraction) are calculated for three cases where the hydrogen mass fraction in air is 1.5%, 2.5%, and 5%.
Abel Rouboa +3 more
wiley +1 more source
International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.The choice of turbulence model significantly impacts the prediction of the supersonic combustion flow field. In this study, the transient autoignition process and steady supersonic combustion performance of methane fuel with adjustable reactivity in a scramjet combustor were numerically investigated, employing different turbulence models including ...
Zihan Wang +6 more
wiley +1 more source
Plasma-enhanced mixing and flameholding in supersonic flow. [PDF]
Philos Trans A Math Phys Eng Sci, 2015 Firsov A +3 more
europepmc +1 more source