Results 71 to 80 of about 13,320 (264)
Selection of temperature and power parameters for multi-modular lunar jet penetrator [PDF]
INCAS Bulletin, 2019 The questions and the particularity of the choice of design parameters of multi-module lunar jet penetrators are considered. A constructive layout of the penetrator is proposed and the advantages of a multi-modular design are presented.
Vladimir А. ZAGOVORCHEV +1 more
doaj +1 more source
How good are large language models at product risk assessment?
Risk Analysis, Volume 45, Issue 4, Page 766-789, April 2025.Abstract Product safety professionals must assess the risks to consumers associated with the foreseeable uses and misuses of products. In this study, we investigate the utility of generative artificial intelligence (AI), specifically large language models (LLMs) such as ChatGPT, across a number of tasks involved in the product risk assessment process ...
Zachary A. Collier +2 more
wiley +1 more source
Advanced Science, Volume 12, Issue 10, March 13, 2025.A functionally graded oxide scale comprising a dense top layer and an underlying fine‐grained layer with a grain size gradient forms on a multicomponent (Hf,Zr,Ti)B2 coating through Ti content optimization. The former is a superior oxygen barrier, and the latter ensures strain tolerance, collectively manifesting the coating's exceptional ablation ...
Junshuai Lv +9 more
wiley +1 more source
Autophage engines: towards a throttleable solid motor [PDF]
, 2018 This paper describes the instrumented test firing of a rocket that seeks to combine the throttleability of a liquid-fueled engine with the simplicity of a solid motor.
Dron, Mykola +5 more
core +1 more source
Liposomes as sustainable delivery systems in food, cosmetic, and pharmaceutical applications
Journal of the American Oil Chemists' Society, Volume 102, Issue 3, Page 547-568, March 2025.Overview of liposome preparation methods and applications. Abstract Liposomes are artificial microscopic vesicles composed of phospholipid bilayers with the ability to encapsulate both hydrophobic and hydrophilic molecules, owing to the amphipathic nature of lipids.
Minfang Luo +5 more
wiley +1 more source
Recycled tire rubber as reinforcement for erosion‐resistant epoxy composites
Polymer Engineering &Science, Volume 65, Issue 3, Page 1386-1403, March 2025.Recycled tire rubber as reinforcement for erosion‐resistant epoxy composites. Abstract The aim of the study was to develop environmentally friendly, low‐cost, and highly erosion‐resistant composites using rubber particles recycled from waste tires as reinforcement.
Orkan Baran Korkusuz +2 more
wiley +1 more source
Comparative CFD analysis of a 2D supersonic nozzle flow with jet tab and jet vane
Tehnički Vjesnik, 2017 In this study, a CFD (Computational Fluid Dynamics) computational model has been established, with the aim to properly simulate complex supersonic flow generated by a 2D convergent-divergent nozzle. For the purpose of rocket engine thrust vector control (
Olivera Kostić +2 more
doaj +1 more source
Throttleable Solid Propellants Through Embedded Shape Memory Alloy and Resistance Wires
Propellants, Explosives, Pyrotechnics, Volume 50, Issue 3, March 2025.Throttling behavior of expanding propellants ABSTRACT Solid propellants are used in propulsion systems for their high performance, feasibility to manufacture, long shelf life, and ease of storage and handling; however, they are limited by the inability to actively control the burning rate.
Derek K. Messer +3 more
wiley +1 more source
Calculating Nozzle Side Loads using Acceleration Measurements of Test-Based Models [PDF]
, 2007 As part of a NASA/MSFC research program to evaluate the effect of different nozzle contours on the well-known but poorly characterized "side load" phenomena, we attempt to back out the net force on a sub-scale nozzle during cold-flow testing using ...
Brown, Andrew M., Ruf, Joe
core +1 more source
Mechanical properties of MoW–HfN surrogate cermet fuel for nuclear thermal propulsion
International Journal of Applied Ceramic Technology, Volume 22, Issue 2, March/April 2025.Abstract The mechanical performance of MoW‐HfN, a surrogate cermet for MoW‐UN Nuclear Thermal Propulsion (NTP) fuel, was characterized from room temperature to 1600°C. The modulus of elasticity and flexure strength were obtained from four‐point bend tests.
James F. Mudd +7 more
wiley +1 more source