Results 31 to 40 of about 1,571,082 (390)

Numerical Investigation on the Thermal Behaviour of a LOx/LCH4 Demonstrator Cooling System

open access: yesAerospace, 2021
Reliability of liquid rocket engines is strictly connected with the successful operation of cooling jackets, able to sustain the impressive operative conditions in terms of huge thermal and mechanical loads, generated in thrust chambers. Cryogenic fuels,
Daniele Ricci   +2 more
doaj   +1 more source

Comparison and Evaluation of Transport Property Prediction Performance of Supercritical Hydrocarbon Aviation Fuels and Their Pyrolyzed Products via Endothermic Reactions

open access: yesEnergies, 2023
This study presents results of predicting the transport properties of hydrocarbon aviation fuels and their decomposed products after pyrolysis.
Sung-rok Hwang, Hyung Ju Lee
doaj   +1 more source

Effect of Tube Geometry on Regenerative Cooling Performance [PDF]

open access: yes41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005
The flowfield characteristics in a rocket engine coolant channels are analyzed by use of a commercial CFD and multiphysics software developed by the CFD Research Corp. called CFD-ACE+. The channels are characterized by high Reynolds number flow, varying aspect ratio, varying curvature, asymmetric and symmetric heating.
D. Brian Landrum, Daniel K. Parris
openaire   +2 more sources

Experimental study of a counter-flow regenerative evaporative cooler [PDF]

open access: yes, 2016
This paper aims to investigate the operational performance and impact factors of a counter-flow regenerative evaporative cooler (REC). This was undertaken through a dedicated experimental process.
Dong, Xuelin   +3 more
core   +1 more source

Energy saving potential of a counter-flow regenerative evaporative cooler for various climates of China: Experiment-based evaluation [PDF]

open access: yes, 2017
© 2017 Recently there has been growing interest in regenerative evaporative coolers (REC), which can reduce the temperature of the supply air to below the wet-bulb of intake air and approach its dew-point.
Chen, Hongbing   +4 more
core   +1 more source

Comparative Study of the Cross-Flow Heat and Mass Exchangers for Indirect Evaporative Cooling Using Numerical Methods

open access: yesEnergies, 2018
This paper presents a comparative study of the cross-flow regenerative heat and mass exchanger (HMX) and the conventional cross-flow HMX for indirect evaporative cooling (IEC) with numerical methods.
Yugang Wang, Xiang Huang, Li Li
doaj   +1 more source

Thermal Behaviour of the Cooling Jacket Belonging to a Liquid Oxygen/Liquid Methane Rocket Engine Demonstrator in the Operation Box

open access: yesAerospace, 2023
The cooling jackets of liquid rocket engines are composed of narrow passages surrounding the thrust chambers and ensure the reliable operation of the engine.
Daniele Ricci   +3 more
doaj   +1 more source

Influence of curvature in regenerative cooling system of rocket engine [PDF]

open access: yesProgress in Propulsion Physics, 2009
Thermomechanical loads in rocket engines can be drastically reduced by a reliable cooling system. The regenerative cooling system uses propellants as coolant which §ows through milled cooling channels in the chamber walls. Due to centrifugal forces, dynamic secondary motions appearincooling-channelcurvatures,whichstronglymodify heattransfer.
Torres, Y., Stefanini, L., Suslov, D.
openaire   +3 more sources

A Simplified Thermal Analysis Model for Regeneratively Cooled Rocket Engine Thrust Chambers and Its Calibration with Experimental Data

open access: yesAerospace, 2023
An essential part of the design of a liquid rocket engine is the thermal analysis of the thrust chamber, which is a component whose operative life is limited by the maximum allowable wall temperature and heat flux.
Matteo Fagherazzi   +3 more
doaj   +1 more source

Improving the performance of LOX/kerosene upper stage rocket engines

open access: yesPropulsion and Power Research, 2017
Improved liquid rocket engine cycles were proposed and analyzed via comparison with existing staged combustion and gas-generator cycles. The key features of the proposed cycles are regenerative cooling of thrust chamber by oxygen and subsequent use of ...
IgorN. Nikischenko   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy