Results 11 to 20 of about 13,180 (230)

Numerical Analysis of Paraffin-Wax/Oxygen Hybrid Rocket Engines [PDF]

open access: yesJournal of Propulsion and Power, 2020
A predictive numerical approach, based on Reynolds-averaged Navier–Stokes simulations including the effects of turbulence, chemistry, fluid/surface interaction, and radiation, has been developed fo...
Migliorino M. T., Bianchi D., Nasuti F.
openaire   +4 more sources

Analysis of advanced cooling strategies for rocket engines conveying ternary hybrid nanofluids with second slip conditions and melting heat transfer

open access: yesCase Studies in Thermal Engineering
Effective cooling in rocket engines is essential to prevent overheating and ensure efficient performance under extreme operating conditions. This study presents a comprehensive investigation into advanced cooling strategies for rocket engines utilizing ...
Hatem Gasmi   +7 more
doaj   +3 more sources

Approaches to Low Fuel Regression Rate in Hybrid Rocket Engines

open access: yesInternational Journal of Aerospace Engineering, 2012
Hybrid rocket engines are promising propulsion systems which present appealing features such as safety, low cost, and environmental friendliness. On the other hand, certain issues hamper the development hoped for.
Dario Pastrone
doaj   +2 more sources

CD8+ T cell memory is sustained in mice by hepatic stellate cells

open access: yesHepatology, EarlyView., 2022
HSC role in memory CD8+ T cell maintenance. Abstract Background and Aims Long‐lasting immunological memory is the ultimate goal of vaccination. Homeostatic maintenance of memory CD8+ cytotoxic T cells (MemCD8TCs) is thought to be mediated by IL‐15/IL‐15R heterodimer (15HD)‐expressing myeloid cells.
Yi‐Ting Chen   +4 more
wiley   +1 more source

Hybrid Rocket Engine Design Optimization at Politecnico di Torino: A Review

open access: yesAerospace, 2021
Optimization of Hybrid Rocket Engines at Politecnico di Torino began in the 1990s. A comprehensive review of the related research activities carried out in the last three decades is here presented.
Lorenzo Casalino   +2 more
doaj   +1 more source

DESIGN FEATURES OF ENGINES WITH PULSED DETONATION CAMERAS

open access: yesАвіаційно-космічна техніка та технологія, 2020
The pressure of the products of chemical reactions in the chamber of a rocket engine increases significantly if the rocket fuel components burn in the detonation mode.
Олександр Євгенович Золотько   +4 more
doaj   +1 more source

Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire

open access: yesApplied Sciences, 2023
A rocket’s turbulent jet radiates intense acoustic waves, which are an acoustic load for structural components like payload, launch structure, and rocket avionics, and impact communities near the launch site.
Giovanni Fasulo   +4 more
doaj   +1 more source

Optimal Design of Electrically Fed Hybrid Mars Ascent Vehicle

open access: yesAerospace, 2021
The optimal design of the propulsion system for a potential Mars Ascent Vehicle is analyzed, in the context of the Mars Sample Return Mission. The Mars Ascent Vehicle has to perform an initial ascent phase from the surface and then circularize into a 170
Lorenzo Casalino   +2 more
doaj   +1 more source

Ascent trajectory optimisation for a single-stage-to-orbit vehicle with hybrid propulsion [PDF]

open access: yes, 2012
This paper addresses the design of ascent trajectories for a hybrid-engine, high performance, unmanned, single-stage-to-orbit vehicle for payload deployment into low Earth orbit. A hybrid optimisation technique that couples a population-based, stochastic
Brown, Richard   +4 more
core   +1 more source

Large-Scale CAMUI Type Hybrid Rocket Motor Scaling, Modeling, and Test Results

open access: yesAerospace, 2021
An understanding of the scalability of hybrid rocket regression models is critical for the enlargement and commercialization of small-scale engines developed within universities and similar research institutions.
Tor Viscor   +4 more
doaj   +1 more source

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