Results 61 to 70 of about 6,709 (233)

Medium independent jet (MI-Jet) engine

open access: yesPropulsion and Power Research, 2020
MI-Jet or medium independent jet engine is a new conceptual design which can be used in any gaseous atmosphere or in any planets with an ISP greater than that of the existing rocket engines.
Prajith Kumar K P, Aravind Vaidyanathan
doaj   +1 more source

Numerical Modeling of Chemical Kinetics, Spray Dynamics, and Turbulent Combustion towards Sustainable Aviation

open access: yesAerospace, 2023
With growing interest in sustainable civil supersonic and hypersonic aviation, there is a need to model the combustion of alternative, sustainable jet fuels. This work presents numerical simulations of several related phenomena, including laminar flames,
Arvid Åkerblom   +5 more
doaj   +1 more source

Machine Learning‐Based Backpressure Unstart Prediction and Warning Method for Combined Cycle Engine Hypersonic Inlet‐Oriented Wide Speed Range

open access: yesInternational Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
Inlet unstart prediction and warning are strictly crucial to the operation of hypersonic engines, especially for combined cycle engines where implementation across a wide speed range poses significant challenges. This paper proposes a realization method that involves constructing the conditions of critical backpressure ratios for the inlet unstart and ...
Ke Min   +6 more
wiley   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Analytical and Numerical Feasibility Analysis of a Contra-Rotary Ramjet Engine

open access: yesEnergies, 2019
A new idea for a contra-rotary ramjet engine is presented. To define the theoretical limits of the non-typical, contra-rotary ramjet engine configuration, its analytical model was developed. The results obtained from that model and the analytical results
Tomasz Laube, Janusz Piechna
doaj   +1 more source

Numerical Investigation on the Effect of Fuel‐Rich Degree in the RBCC Engine under the Ejector Mode

open access: yesInternational Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
The ejector mode of the Rocket‐Based Combined‐Cycle (RBCC) engine is characterized by high fuel consumption. This study is aimed at investigating the influence of the rocket fuel‐rich degree on the RBCC engine’s performance under the ejector mode combined with simultaneous mixing and combustion (SMC).
Yizhi Yao   +10 more
wiley   +1 more source

Design of a Ramjet-Assisted Shell with Front Intake

open access: yesAerospace
Artillery shells are usually large-caliber projectiles fired by artillery guns. Present long-range artillery shells use techniques such as the base bleed system to reduce the drag coefficient of the shell, but could only increase the range of the shell ...
Kishore Manoharan   +2 more
doaj   +1 more source

Research in rocket and jet propulsion [PDF]

open access: yes, 1950
When considering the problems of basic research in rocket and jet propulsion, it is profitable to keep in mind the salient features of rocket- and jet-propulsion engineering.
Tsien, Hsue-Shen
core  

Performance comparison of full-scale ramjet and scramjet using boron-based propellant

open access: yesDefence Technology
This study investigates the performance boundaries of ramjet and scramjet engines fueled by boron-based propellant through full-scale engine modeling and three-dimensional computational fluid dynamics simulations.
Xianju Wu   +5 more
doaj   +1 more source

Continuous 500-Hz OH-PLIF Measurements in a Hydrogen-Fueled Scramjet Combustor

open access: yesFrontiers in Physics, 2020
In recent years, significant research attention has focused on scramjet bench-testing using optical measurement techniques to obtain significant experimental data.
Jiangbo Peng   +18 more
doaj   +1 more source

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