Results 11 to 20 of about 20,668 (233)

Transcritical Behavior of Methane in the Cooling Jacket of a Liquid-Oxygen/Liquid-Methane Rocket-Engine Demonstrator

open access: yesEnergies, 2022
The successful design of a liquid rocket engine is strictly linked to the development of efficient cooling systems, able to dissipate huge thermal loads coming from the combustion in the thrust chamber.
Daniele Ricci   +2 more
doaj   +1 more source

Remaining Useful Life Prediction for Liquid Propulsion Rocket Engine Combustion Chamber

open access: yes2021 5th International Conference on Control and Fault-Tolerant Systems (SysTol), 2021
The reusability of a liquid propulsion rocket engine (LPRE) has gained tremendous attention in the recent years. The present paper deals with an automatic estimation of the Remaining Useful Life of a LPRE combustion chamber with the cracking of the internal wall due to the thermo-mechanical stress considered as one of the major degradation modes.
Chelouati, Mohammed   +3 more
openaire   +2 more sources

Life Analysis of Reusable Liquid Rocket Engine Thrust Chamber

open access: yesAerospace, 2022
The thrust chamber’s inner wall suffers high temperature and pressure differences from the coolant channel, which limits the life of the rocket engine.
Yuanjie Qi, Yuqiang Cheng, Yan Zhang
doaj   +1 more source

Effects of swirl number and bluff body on swirling flow dynamics

open access: yesAIP Advances, 2023
Bluff-body swirling flows have been widely employed in gas-turbine combustors to achieve flame stabilization. Meanwhile, considerable efforts have been made to understand swirling flow dynamics, the effects of swirl number and bluff body on flow ...
Yupeng Gao   +4 more
doaj   +1 more source

Modelling Rocket System Performance Parameters

open access: yesAcademy Journal of Science and Engineering, 2022
What distinguishes the rocket system from airbreathing engines is that the rocket carries its own propellants, fuel and oxidants.  The modern rocket was originally developed for ballistic missiles.
Nnorom Achara
doaj  

Hybrid rocket propulsion technology for space transportation revisited - propellant solutions and challenges

open access: yesFirePhysChem, 2021
This paper presents the status of developments worldwide regarding use of hybrid rocket motors for space transportation. Historical roots are presented and reasons for revisiting hybrid technology after a few decades of limited interest are examined ...
Adam Okninski   +3 more
doaj   +1 more source

A Liquid Launch Vehicle Safety Assessment Model Based on Semi-Quantitative Interval Belief Rule Base

open access: yesMathematics, 2022
As the propulsion part of a space launch vehicle and nuclear weapon missile, the health status of the liquid rocket determines whether the space launch vehicle and nuclear weapon missile can function normally.
Xiaoyu Cheng   +3 more
doaj   +1 more source

Generative adversarial networks with physical evaluators for spray simulation of pintle injector

open access: yesAIP Advances, 2021
Due to the adjustable geometry, pintle injectors are especially suitable for liquid rocket engines, which require a widely throttleable range. However, applying the conventional computational fluid dynamics approaches to simulate the complex spray ...
Hao Ma   +3 more
doaj   +1 more source

Liquid Propulsion at IAE: Vision of the activities and future perspectives [PDF]

open access: yesJournal of Aerospace Technology and Management, 2009
This paper presents the activities in the area of liquid propulsion, which received an effective boost at the end of the 90s. There is a consensus among specialists on the use of liquid propulsion in the next generation of satellite launcher vehicles in ...
Marco F. Carvalho Torres   +4 more
doaj  

Supercritical Injection Modeling by an Incompressible but Variable Density Approach

open access: yesAerospace, 2023
Supercritical nitrogen jet behavior is modeled using an incompressible but variable density approach developed for variable density jets. Following mechanical and thermal breakup concepts, several injection conditions relevant to liquid rocket propulsion
Leandro B. Magalhães   +2 more
doaj   +1 more source

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