Results 21 to 30 of about 14,190 (245)

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

Hepatology, 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, Yu‐Chia Su, Yee‐Ern Or, Chin‐Fu Cheng, John T. Kung   +4 more
wiley   +1 more source

Experimental investigation of erosion rate of insulation materials using hybrid rockets

FirePhysChem, 2021
Thermal insulation is essential to protect the exposed surface from high-temperature and high heat flux situations. The selection of suitable insulation materials plays a crucial role in determining rocket performance.
Phaninder Reddy Vaka, Nikunj Rathi, P.A. Ramakrishna   +2 more
doaj   +1 more source

Review on the regression rate-improvement techniques and mechanical performance of hybrid rocket fuels

FirePhysChem, 2021
Human spaceflight, space tourism, and the launch of microsatellites are all expected to grow in the future. In fact, with the recent increase of the satellite market, almost 1000 smallsats per year are foreseen to be launched over the next decade. Hybrid
Yash Pal, Sri Nithya Mahottamananda, Sasi Kiran Palateerdham, Sivakumar Subha, Antonella Ingenito   +4 more
doaj   +1 more source

Variability analysis of ABS solid fuel manufactured by fused deposition modeling for hybrid rocket motors

Journal of Mechanical Engineering and Sciences, 2021
The process of fused deposition material (FDM) was used to manufacture propellant grains of Acrylonitrile Butadiene Styrene (ABS) as novel rocket fuel grain, with three types of geometry in the burning port.
J. A. Urrego P., F.A. Rojas M., J. R. Muñoz L.   +2 more
doaj   +1 more source

Swirled injector modeling for cavitating multiphase flow [PDF]

E3S Web of Conferences, 2019
The goal of this study is to present a comparison between different approaches to multiphase injection modeling of self-pressurized rocket engine propellant.
Ziegler Bartosz, Mosędrżny Jędrzej, Lewandowska Natalia   +2 more
doaj   +1 more source

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

Aerospace, 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, Landon Kamps, Kazuo Yonekura, Hikaru Isochi, Harunori Nagata   +4 more
doaj   +1 more source

Beeswax–EVA/Activated-Charcoal-Based Fuels for Hybrid Rockets: Thermal and Ballistic Evaluation

Energies, 2022
Beeswax (C46H92O) is a naturally derived substance that has the potential to be used as a solid fuel for hybrid rocket applications and as a substitute for paraffin wax fuel in hybrid rockets.
Sri Nithya Mahottamananda, Yash Pal, Mengu Dinesh, Antonella Ingenito   +3 more
doaj   +1 more source

Optimization design in single wagon-wheel fuel grain of hybrid rocket motor

FirePhysChem, 2021
The grain design of hybrid rocket motor is a design of proper fuel grain geometry and flow adjustment scheme based on the total impulse, thrust, chamber pressure, length and outer diameter of combustion chamber.
Wei Tianfang, Cai Guobiao, Tian Hui, Zhu Hao, Zhang Yuanjun, Li Xintong   +5 more
doaj   +1 more source

Hydrogen peroxide – A promising oxidizer for rocket propulsion and its application in solid rocket propellants

FirePhysChem, 2022
This paper discusses the potential use of hydrogen peroxide as oxidizer for solid rocket propulsion. While hydrogen peroxide is a liquid in normal conditions, it may be used in solid rocket motor grains.
Wioleta Kopacz, Adam Okninski, Anna Kasztankiewicz, Paweł Nowakowski, Grzegorz Rarata, Pawel Maksimowski   +5 more
doaj   +1 more source

Numerical Simulation of Chemical Propulsion Systems: Survey and Fundamental Mathematical Modeling Approach

Aerospace, 2023
This study deals with the mathematical modeling and numerical simulation of chemical propulsion systems (CPSs). For this, we investigate and summarize a comprehensive collection of the simulation modeling developments of CPSs in academic works ...
Jihyoung Cha
doaj   +1 more source