Results 71 to 80 of about 2,233 (228)
Design of a Ramjet-Assisted Shell with Front Intake
AerospaceArtillery 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
Analytical and Numerical Feasibility Analysis of a Contra-Rotary Ramjet Engine
Energies, 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
International 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
An Integration of the Turbojet and Single-Throat Ramjet [PDF]
, 1995 A turbine-engine-based hybrid propulsion system is described. Turbojet engines are integrated with a single-throat ramjet so as to minimize variable geometry and eliminate redundant propulsion components.
Trefny, C. J., Benson, T. J.
core +1 more source
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 +1 more source
Performance comparison of full-scale ramjet and scramjet using boron-based propellant
Defence TechnologyThis 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
Frontiers 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
Rapid supersonic performance prediction for 2D ramjet inlets [PDF]
, 2016 A computational tool for quick estimation of mass-averaged throat performance for 2D ramjet inlets is presented. Based on the method of characteristics, coupled with unique corrections to the viscous flow and shock interactions associated with ramjet ...
Xie, Wen Zhong +4 more
core +1 more source
Flow Field Characteristics of High‑Gradient Mixing Layers and Laws of Energy Transfer
Nanjing Hangkong Hangtian Daxue XuebaoA numerical simulation study is conducted on the flow field characteristics and laws of energy transfer of the high-gradient mixing layer in a rocket-assisted ramjet engine （RARE） .
YANG Yiding +3 more
doaj +1 more source
Combustion of polymethylmethacrylate in a solid fuel ramjet
Journal of Propulsion and Power, 1990 The combustion behavior of polymethylmet hacrylate (PMMA) in a solid fuel ramjet (SFRJ) was investigated using a connected pipe test facility. The study was oriented towards understanding the most important phenomena related to the combustion in an SFRJ. Regression rates have been determined, and spectroscopy has shown the occurrence of OH, C2, and CH.
Wijchers, T. +3 more
openaire +3 more sources