Results 71 to 80 of about 207,078 (313)
Activated aluminum powders for space propulsion
Powder Technology, 2015 Abstract Aluminum powders are commonly used in solid propellants to enhance the performance of space propulsion systems. During combustion, a fraction of the fuel metal particles, which emerge from the bulk, tends to merge into aggregates. These structures eventually leave the combustion surface in the shape of partially molten agglomerates which can
MAGGI, FILIPPO +4 more
openaire +1 more source
Advanced Functional Materials, EarlyView.ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo +10 more
wiley +1 more source
Investigation of space rendezvous propulsion system requirements. Volume I - Summary Final report, 20 Nov. 1961 - 19 Dec. 1962 [PDF]
Space rendezvous propulsion system requirements - phase and mission analyses, and propulsion system design ...
Lysdale, C. A.
core +1 more source
Meniscus Pixel Printing for Contact‐Lens Vision Sensing and Robotic Control
Advanced Functional Materials, EarlyView.A visual‐sensing contact lens is enabled by meniscus pixel printing (MPP), which rapidly patterns a 200 µm perovskite photodetector pixel in 1 s without masks, vacuum processing, or bulky equipment. A deep‐learning‐based super‐resolution reconstructs sparse on‐lens signals into 80 × 80 high‐resolution visual information, while AI‐driven eye‐tracking ...
Byung‐Hoon Gong +7 more
wiley +1 more source
Non-chemical space propulsion [PDF]
Space mission requirements and technical feasibility of non-chemical space propulsion ...
Evvard, J. C.
core +1 more source
Dispensing Volumetric Additive Manufacturing
Advanced Functional Materials, EarlyView.Dispensing volumetric additive manufacturing (DVAM) prints 3D structures inside a photocurable resin droplet suspended from the tip of a glass pipette, enabling sequential printing without resin vats or manual part removal. Real‐time droplet profiling and ray‐tracing‐based correction compensate for optical distortion at the curved resin‐air interface ...
Hongryung Jeon +5 more
wiley +1 more source
Hanjie xuebaoTo improve issues such as mechanical property degradation and nitrogen escape during arc additive manufacturing of high-nitrogen steel (HNS), additive manufacturing experiments of HNS were conducted under ultrasonic frequency pulsed gas metal arc (UFP ...
Li MA +5 more
doaj +1 more source
Micro Electro-Osmotic Thrusters of Power-Law Fluids for Space Propulsion. [PDF]
Micromachines (Basel), 2023 Zheng J, Wang J, Jian Y.
europepmc +1 more source
Space Propulsion Technology Program Overview [PDF]
The topics presented are covered in viewgraph form. Focused program elements are: (1) transportation systems, which include earth-to-orbit propulsion, commercial vehicle propulsion, auxiliary propulsion, advanced cryogenic engines, cryogenic fluid ...
Escher, William J. D.
core +1 more source
Advanced Functional Materials, EarlyView.A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam +8 more
wiley +1 more source