Results 111 to 120 of about 12,543 (287)
Ultra‐Thin Soft Pneumatic Actuation for Minimally Invasive Neural Interfacing
Advanced Materials Technologies, EarlyView.Parylene C is a common polymer in bioelectronics, favored for its biological and chemical inertness. However, this makes bonding layers of Parylene C together very challenging. Here it is a laser to selectively weld layers of Parylene C to create high‐pressure fluidic actuation devices.
Lawrence Coles +4 more
wiley +1 more source
Space shuttle system program definition. Volume 1: Executive summary [PDF]
A study for the selection of a low cost shuttle system for design and development was conducted. The objective of the final study was to examine and penetrate the major technical and cost issues affecting the choice of the following: (1) liquid ...
core +1 more source
Advanced Optical Materials, EarlyView.The newly developed regioselective strategy for the para‐functionalization of C(sp3)‐bridged phosphorus‐centered heterotriangulene delivers a series of donor‐acceptor emitters exhibiting thermally activated delayed fluorescence. The carbazole‐substituted compounds feature a unique combination of high photoluminescence quantum yields up to 75%, deep ...
Maximilian Schöner +8 more
wiley +1 more source
Case Studies in Thermal EngineeringTo improve the plasticization quality and process safety of Modified Double-Base (MDB) propellants during the calendering process. This study, using actual physical parameters of MDB propellant, a three-dimensional thermo-fluid coupled model was ...
Zhi-yuan Zhang +6 more
doaj +1 more source
Comparative examination of the chemical stability of powders and double-base rocket propellants by measuring heat activities and stabilizer content [PDF]
Scientific Technical Review, 2014 The problem of assessing the chemical stability of nitrocellulose (NC) based propellants is examined with a focus on a comparative analysis of the home country based methodology and modern methods used in the world.
Jelisavac Ljiljana +4 more
doaj
Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation
Advanced Robotics Research, EarlyView.This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu +3 more
wiley +1 more source
Advanced Solar-propelled Cargo Spacecraft for Mars Missions [PDF]
Three concepts for an unmanned, solar powered, cargo spacecraft for Mars support missions were investigated. These spacecraft are designed to carry a 50,000 kg payload from a low Earth orbit to a low Mars orbit.
Auziasdeturenne, Jacqueline +9 more
core +1 more source
On–Off Switchable Micromotors for Use in Steerable Microvehicles
Advanced Robotics Research, EarlyView.Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson +3 more
wiley +1 more source
FirePhysChemThis study investigate the catalytic behavior of activated carbon-supported metal oxides on the thermal decomposition of a double-base propellant comprising nitrocellulose (NC) and diethylene glycol dinitrate (DEGDN).
Mohammed Dourari +9 more
doaj +1 more source
A thermal control approach for a solar electric propulsion thrust subsystem [PDF]
A thrust subsystem thermal control design is defined for a Solar Electric Propulsion System (SEPS) proposed for the comet Halley Flyby/comet Tempel 2 rendezvous mission.
Maloy, J. E., Oglebay, J. C.
core +1 more source