Results 51 to 60 of about 491,279 (390)
CFD Analysis of De Laval Nozzle of a Hybrid Rocket Engine [PDF]
E3S Web of Conferences: The study gives a general overview of the CFD-simulated gas flow via the nozzle of a De Laval rocket engine. In CFD software, the mesh is generated using the nozzle’s geometry.
Ahmad Mohamed Tarmizi +6 more
doaj +1 more source
Review of Scientific Instruments, 2020 The transition from old space to new space along with increasing commercialization has a major impact on space flight, in general, and on electric propulsion (EP) by ion thrusters, in particular.
K. Holste +26 more
semanticscholar +1 more source
Deployment of Solar Sails by Joule Effect: Thermal Analysis and Experimental Results
Aerospace, 2020 Space vehicles may be propelled by solar sails exploiting the radiation pressure coming from the sun and applied on their surfaces. This work deals with the adoption of Nickel-Titanium Shape Memory Alloy (SMA) elements in the sail deployment mechanism ...
Gianluigi Bovesecchi +4 more
doaj +1 more source
Sea Turtles Employ Drag-Reducing Techniques to Conserve Energy
Journal of Marine Science and Engineering, 2022 Sea turtles are recognised as one of the ocean’s most remarkable migratory species, accomplishing journeys that cover thousands of kilometres. This fact is even more extraordinary when considering sea turtles consume mostly low-energy foods.
Nick van der Geest +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2020 The shipping industry is becoming increasingly aware of its environmental responsibilities in the long-term. In 2018, the International Maritime Organization (IMO) pledged to reduce greenhouse gas (GHG) emissions by at least 50% by the year 2050 as ...
Kyunghwa Kim +3 more
semanticscholar +1 more source
A Two-Phase Mass Flow Rate Model for Nitrous Oxide Based on Void Fraction
Aerospace, 2022 In the field of space propulsion, self pressurized technology is an example of innovation capable of improving system performances through reduction of volumes and other optimizations.
Simone La Luna +4 more
doaj +1 more source
Symmetry breaking propulsion of magnetic microspheres in nonlinearly viscoelastic fluids
Nature Communications, 2021 Microscale propulsion impacts a diverse array of fields ranging from biology and ecology to health applications, such as infection, fertility, drug delivery, and microsurgery.
L. Rogowski +5 more
semanticscholar +1 more source
Toward Smart Footwear to Track Frailty Phenotypes—Using Propulsion Performance to Determine Frailty
Sensors, 2018 Frailty assessment is dependent on the availability of trained personnel and it is currently limited to clinic and supervised setting. The growing aging population has made it necessary to find phenotypes of frailty that can be measured in an ...
Hadi Rahemi +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Alectinib resistance in ALK+ NSCLC depends on treatment sequence and EML4‐ALK variants. Variant 1 exhibited off‐target resistance after first‐line treatment, while variant 3 and later lines favored on‐target mutations. Early resistance involved off‐target alterations, like MET and NF2, while on‐target mutations emerged with prolonged therapy.
Jie Hu +11 more
wiley +1 more source