Results 11 to 20 of about 20,111 (287)
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 +4 more
wiley +1 more source
Design and Test of a Student Hybrid Rocket Engine with an External Carbon Fiber Composite Structure
Aerospace, 2020 The development of hybrid rockets offers excellent opportunities for the practical education of students at universities due to the high safety and relatively low complexity of the rocket propulsion system.
Francesca Heeg +3 more
doaj +1 more source
Review of Alternative Sustainable Fuels for Hybrid Rocket Propulsion
Aerospace, 2023 Hybrid rockets using specific oxidizer–fuel combinations are considered a green alternative to current propulsion systems, as they do not release very toxic or polluting exhausts, but only much less harmful substances such as carbon monoxide/dioxide and ...
Francesco Barato
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 +3 more
doaj +1 more source
Hybrid Rockets as Post-Boost Stages and Kick Motors
Aerospace, 2021 Hybrid rockets are attractive as post-boost stages and kick motors due to their inherent safety and low cost, but it is not clear from previous research which oxidizer is most suitable for maximizing ΔV within a fixed envelope size, or what impact O/F ...
Landon Kamps +2 more
doaj +1 more source
Performance of Additively Manufactured Fuels for Hybrid Rockets
Aerospace, 2023 Hybrid rocket engine (HRE) performance is dependent on fuel/oxidizer selection and fuel grain geometry. A literature review was performed to identify key trends and findings related to the application of the additive manufacturing (AM) of fuel systems ...
Calvin Nguyen, James C. Thomas
doaj +1 more source
COMBUSTION PROCESSES IN HYBRID ROCKETS
International Journal of Energetic Materials and Chemical Propulsion, 2019 This paper presents the latest results achieved at the Space Propulsion Laboratory of Politecnico di Milano in the area of hybrid propulsion. Focus is put on four specific research topics currently under investigation and strongly linked: (1) solid fuel formulations development; (2) investigation of the burning behavior of liquefying fuel formulations ...
Paravan, Christian +3 more
openaire +1 more source
Burn Time Correction of Start-Up Transients for CAMUI Type Hybrid Rocket Engine
Aerospace, 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
Aerospace, 2021 This paper presents the development of indigenous hybrid rocket technology, using 98% hydrogen peroxide as an oxidizer. Consecutive steps are presented, which started with interest in hydrogen peroxide and the development of technology to obtain High ...
Adam Okninski +9 more
doaj +1 more source
Hybrid material performance assessment for rocket propulsion
Journal of the Mechanical Behavior of Materials, 2022 Fuel based on hybrid green material is of paramount importance for various military and civilian purposes. This work presents a novel expert-based multi-criteria hierarchy and decision-making model to evaluate various chemical rocket propulsion ...
AL-Oqla Faris M., Hayajneh Mohammed T.
doaj +1 more source