Results 41 to 50 of about 66,597 (309)
Direct Growth of Transparent Boron Nitride Neutron Shielding Layer for Space Window
Advanced Science, EarlyView.Direct growth of sp2‐sp3 hybridized BN (HBN) on quartz, enabled by an h‐BN buffer, produces transparent and stable films up to 80 µm thick with high transmittance and strong neutron shielding, making HBN a promising candidate for space windows in long‐term lunar missions.
Dobin Kim +15 more
wiley +1 more source
Rocket engine analog simulation [PDF]
, 1968 Mathematical equations simulate the operation of a rocket engine, simulate destructive and nondestructive tests to verify engine design feasibility, and investigate nonlinear variations in engine ...
Philyaw, B. K., Randazzo, G. J.
core +1 more source
Advanced Science, EarlyView.Tracking physical impacts is important in many fields. Self‐assembled microparticles made from polydiacetylene and silk fibroin that change color from blue to red when hit can provide an alternative approach to traditional mechanical transducers, quantitatively visualizing impact with responses ranging from <100 to 770 N.
Marco Lo Presti +4 more
wiley +1 more source
Rocket engine injector Patent [PDF]
, 1968 Rocket engine injector orifice to accommodate changes in density, velocity, and pressure, thereby maintaining constant mass flow rate of propellant into rocket combustion ...
Stein, S.
core +1 more source
Direct Recycling of Mixed‐Oxide Cathodes: Balancing Cost, Performance and Environmental Trade‐Offs
Advanced Science, EarlyView.Direct regeneration routes for mixed‐oxide lithium‐ion battery cathodes are systematically compared using harmonized techno‐economic, electrochemical, and environmental metrics. Solid‐state, hydrothermal, molten salt, electrochemical, and chemical relithiation methods are benchmarked to identify performance, cost, and sustainability trade‐offs.
Evgenii Beletskii +8 more
wiley +1 more source
Parametric Simulation Study of Liquid Film Cooling of Hydrocarbon Liquid Rocket Engine
AerospaceThe hydrocarbon liquid rocket engine working environment is harsh; the thrust chamber needs to withstand high temperatures and a high-pressure working environment, and the thrust chamber wall material is difficult to bear, so it is necessary to design ...
Huixin Yang +3 more
doaj +1 more source
JAPANESE JOURNAL OF MULTIPHASE FLOW, 1997 PURPOSE:To boost propellant to a high pressure without using a subcombustor by reheating a part of the propellant heated by the heat of a combustor by using a heat exchange means in a nozzle part. CONSTITUTION:The liquid hydrogen as fuel and liquid oxygen as oxidizer are pressurized to each high pressure by boosters 3 and 4.
openaire +2 more sources
Advanced Science, EarlyView.By engineering the PVA/H3PO4 ionic elastomer with optimized viscoelasticity and a height‐graded microstructure, the pressure sensor achieves a broad linear range up to 2000 kPa and a high sensitivity of 2.70 nF/kPa. These advancements underscore its strong potential for wearable electronics, including bio‐signal detection, health monitoring, and ...
Allen J. Cheng +13 more
wiley +1 more source
Ablation performance of 3D C/SiC composite nozzles under double-component liquid power environment
Cailiao gongcheng, 2022 In order to explore the ablation characteristics of C/SiC ceramic composite nozzles in the working environment of liquid rocket engines, 3D C/SiC composite nozzle was prepared by the precursor impregnation pyrolysis(PIP) process, and the ablation test of
BAI Longteng +4 more
doaj +1 more source
, 2021 This article describes a solution to the problem of insufficient capacity of existing rocket engines for interplanetary missions. Development in the sphere was analyzed by comparing the examples of the rockets of 1970 and present time. Further development of the nuclear engine is discussed.
Isakov, A. D. +2 more
openaire +1 more source