Results 1 to 10 of about 329 (159)

Bridging the Technology Gap: Strategies for Hybrid Rocket Engines

open access: yesAerospace, 2023
Hybrid rocket propulsion, first demonstrated by the Russian GIRD-09 rocket in 1933, combines liquid oxidizer and solid fuel for thrust generation. Despite numerous advantages, such as enhanced safety, controllability, and potential environmental benefits,
Christopher Glaser   +2 more
doaj   +3 more sources

Numerical modelling of the hybrid rocket engine performance

open access: yesPropulsion and Power Research, 2021
The purpose of this paper is to present method of the numerical modeling of the hybrid rocket engine's work as a tool for designing engines of this type.
Marian Gieras, Aleksander Gorgeri
doaj   +2 more sources

Audio-Based Engine Fault Diagnosis with Wavelet, Markov Blanket, ROCKET, and Optimized Machine Learning Classifiers [PDF]

open access: yesSensors
Engine fault diagnosis is a critical task in automotive aftermarket management. Developing appropriate fault-labeled datasets can be challenging due to nonlinearity variations and divergence in feature distribution among different engine kinds or ...
Bernardo Luis Tuleski   +4 more
doaj   +2 more sources

Theoretical Investigation on Feedback Control of Hybrid Rocket Engines

open access: yesAerospace, 2019
Despite the fact that hybrid propulsion offers significant benefits, it still suffers from some limitations such as the natural oxidizer to fuel ratio shift which induces variations of the engines’ performances while operating.
Jérôme Messineo, Toru Shimada
doaj   +3 more sources

Hydrodynamic Instabilities Modeling in Hybrid Rocket Engines [PDF]

open access: yesJournal of Spacecraft and Rockets, 2019
Firing tests of a H2O2/polyethylene hybrid rocket motor were performed and analyzed in terms of pressure oscillations under various configurations, using liquid oxidizer injection or gaseous inject...
Jean-Yves Lestrade, Jérôme Anthoine
exaly   +2 more sources

HYBRID ROCKET ENGINE TEST FACILITY DESIGN

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2016
Hybrid rocket engines is relatively less researched subject of chemical rockets. Using fuel and oxidizer in different phases hybrids are safe and cheap. Yet, they are not generating enogh thrust to deliver heavy payloads to edge of space.
Ali Emre Samur   +2 more
doaj   +1 more source

Emission-Driven Hybrid Rocket Engine Optimization for Small Launchers

open access: yesAerospace, 2022
Hybrid rocket engines are a green alternative to solid rocket motors and may represent a low-cost alternative to kerosene fueled rockets, while granting performance and control features similar to that of typical storable liquid rocket engines.
Lorenzo Casalino   +3 more
doaj   +1 more source

Burn Time Correction of Start-Up Transients for CAMUI Type Hybrid Rocket Engine

open access: yesAerospace, 2021
Burn time errors caused by various start-up transient effects have a significant influence on the regression modelling of hybrid rockets. Their influence is especially pronounced in the simulation model of the Cascaded Multi Impinging Jet (CAMUI) hybrid ...
Tor Viscor   +3 more
doaj   +1 more source

Test Activities on Hybrid Rocket Engines: Combustion Analyses and Green Storable Oxidizers—A Short Review

open access: yesAerospace, 2023
Hybrid rocket engines (HREs) offer a low-cost, reliable, and environmentally friendly solution for both launch and in-space applications. Hybrid propellants have been identified as green thanks to their use of non-toxic, non-carcinogenic oxidizers.
Christian Paravan   +2 more
doaj   +1 more source

Multi-Objective, Multi-Disciplinary Design Optimization and Multi-Attribute Evaluation of Hybrid Rocket Motors Used for Manned Lunar Lander

open access: yesAerospace, 2023
This paper proposed a multi-objective, multi-disciplinary design optimization and multi-attribute evaluation method for the manned lunar lander descent stage.
Yang Liu   +5 more
doaj   +1 more source

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