Results 81 to 90 of about 14,137 (299)
Vortex rings from notched nozzles [PDF]
, 2017 The formation of a vortex ring from a piston/nozzle apparatus depends on the nozzle exit's shape. Here we study the formation mechanism and the evolution of asymmetrical rings from notched nozzles using direct numerical simulations. Three types of nozzle are used: i) V-notched; ii) A-notched and iii)W-notched nozzles.
arxiv +1 more source
Multilayer refractory nozzles produced by plasma-spray process [PDF]
, 1966 Multilayer rocket nozzles formed by plasma spraying have good thermal shock resistance and can be reheated in an oxidizing environment without loss of coating adherence.
Bliton, J. L., Rausch, J. L.
core +1 more source
Droplet, Volume 4, Issue 2, April 2025.A sessile LM‐shaped microdroplet system, featuring by three logical internal layers that represent rapid formation, robust manipulation, and revolutionary applications respectively. Abstract Liquid marbles (LMs) have become a focal point in microfluidics for their efficient manipulation of small liquid volumes.
Tong Tong +3 more
wiley +1 more source
Steerable solid propellant rocket motor Patent [PDF]
, 1964 Steerable solid propellant rocket motor adapted to effect payload orientation as multistage rocket stage or reduce velocity as ...
Raggio, C. W., Jr.
core +1 more source
Droplet, Volume 4, Issue 2, April 2025.Based on the analysis of the existing liquid oriented transport surface under gravity, this review analyzes the feasibility of applying the liquid oriented transport surface to the spacecraft fluid management device by summarizing its transport principle and combining with the existing application environment of the spacecraft fluid management device ...
Yifan He +7 more
wiley +1 more source
Applying Energy Dissipation Rate GNSS Accelerometry to a Non‐Circular Orbiting Satellite
Earth and Space Science, Volume 12, Issue 4, April 2025.Abstract The increase in the number of objects in Low‐Earth Orbit has heightened the demand for high‐accuracy orbital prediction models driven by dependable measurements of thermospheric mass density (TMD). Given the added cost and complexity burden of equipping satellites with high precision accelerometers, recent attention has focused on alternative ...
D. J. Fitzpatrick +3 more
wiley +1 more source
arXiv, 2020 Recent publications discuss the size of chemical rockets for long-distance travel, to be launched from a planet. Here I point out that such a rocket cannot be tall and slim but will be short and fat.
arxiv
New class of thermosetting plastics has improved strength, thermal and chemical stability [PDF]
, 1967 New class of thermosetting plastics has high hydrocarbon content, high stiffness, thermal stability, humidity resistance, and workability in the precured state.
Burns, E. A. +2 more
core +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
Nozzle Optimization of Dual Thrust Rocket Motors
, 2019 Optimizing the nozzle of a solid propellant rocket motor plays an essential rule in the overall performance of the motor. In this paper, the investigation of an optimization model of dual thrust propellant rocket motors will be presented. Due to having two phases of thrust in this type of rocket motors, determination of the rocket nozzle expansion ...
Alazeezi, Mohammed, Elek, Predrag
openaire +4 more sources