Results 81 to 90 of about 2,217 (308)
, 2019 The article of record as published may be found at https://doi.org/10.5254/rct.19.80456Solid propellants are energetic materials used to launch and propel rockets and missiles.
Roland, C.M., Mason, B.P.
core
Some Observations on the Ignition of Composite Solid Propellants
, 2013 Heat-up times derived from studies on the ignition characteristics of a few model composite solid propellants, containing polystyrene, carboxy-terminated polybutadiene, plasticised polyvinyl chloride and polyphenol formaldehyde as binders, show that ...
Sankaralingam, S. +3 more
core +1 more source
Magnetic Droplet Manipulation on Open Surfaces
Advanced Materials Technologies, EarlyView.Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley +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
Experimental observation and modeling of solid composite propellants
, 2012 Since the 1960\u27s, composite propellants have been widely used in rocketry applications because of their excellent performance and low cost to implement. Due to their pervasive use, there has been a strong desire for a method to predict the performance
Hedman, Trevor
core
, 2020 Friction sensitivity of composite propellants and their ingredients is of significant interest to mitigate the risk associated with the accidental initiation while processing, handling, and transportation. In this work, attempts were made to
Das, Sushanta +2 more
core +1 more source
Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source
Direct ink writing of ammonium perchlorate propellants for solid rockets using a dual-cure approach
Materials & DesignThis work investigates the fabrication of ammonium perchlorate composite propellants using a dual-cure (ultraviolet and thermally curable) binder via direct ink writing and compares their performance with conventionally cast counterparts.
Farideddin Bazzal +5 more
doaj +1 more source
Current State of the Art of HNF based Composite Propellants
, 2004 The main activities currently performed for the development of HNF-based propellants are presented. The objectives and approach adopted are described. The results obtained on the HNF decomposition mechanism and on the re- and co-crystallisation of HNF ...
van der Heijden A. E. D. M. +13 more
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Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source