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Shock Wave and Aeroelastic Coupling in Overexpanded Nozzle
AerospaceThe growing demand for increasing the engine power of a liquid rocket is driving the development of high-power De-Laval nozzles, which is primarily achieved by increasing the expansion ratio.
Haifeng Hu +3 more
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Carmen, liquid propulsion systems simulation platform [PDF]
Progress in Propulsion Physics, 2011 CNES Launchers Directorate (DLA) has to maintain a high level of expertise to achieve its missions regarding the exploitation of the Ariane 5 family launchers and to prepare the future of launchers. For this purpose, developing and using numerical simulation tools is of key importance.
E. Cliquet, A. Iannetti, J. Masse
openaire +1 more source
SensorsThis study presents a flame detection model that is based on real experimental data that were collected during turbopump hot-fire tests of a liquid rocket engine.
Song Yan +3 more
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Challenges of Ablatively Cooled Hybrid Rockets for Satellites or Upper Stages
Aerospace, 2021 Ablative-cooled hybrid rockets could potentially combine a similar versatility of a liquid propulsion system with a much simplified architecture. These characteristics make this kind of propulsion attractive, among others, for applications such as ...
Francesco Barato
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Scientific Reports, 2021 Certain aquatic insects rapidly traverse water by secreting surfactants that exploit the Marangoni effect, inspiring the development of many self-propulsion systems.
Bokeon Kwak +3 more
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Transient Test and AC Loss Study of a Cryogenic Propulsion Unit for All Electric Aircraft
IEEE Access, 2021 This paper reports a pioneering demonstration platform of a cryogenic propulsion unit at liquid nitrogen temperature. A high temperature superconducting (HTS) machine is connected with a cryogenic power rectifier in a generator mode to prove the ...
Fangjing Weng +5 more
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Numerical study of wave disturbance in liquid cooling film
Propulsion and Power Research, 2013 Transient numerical simulations are carried out to investigate the liquid-gas interface characteristics associated with liquid film cooling flows. A two-dimensional axisymmetric multi-phase numerical model using finite volume formulation is developed ...
S.R. Shine, S. Sunil Kumar, B.N. Suresh
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Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity
Molecular Oncology, EarlyView.Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung +17 more
wiley +1 more source
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022 A computational study of the parameters of a propulsion system of an unmanned aerial vehicle operating on a cryogenic working medium has been carried out. Liquid nitrogen was selected as the cryogenic working fluid.
O. V. Tremkina +4 more
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Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function
FEBS Open Bio, EarlyView.We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke +4 more
wiley +1 more source