Results 131 to 140 of about 2,217 (308)

Microflower-like Fe-Co-MOF with enhanced catalytic performance for decomposition of ammonium perchlorate and combustion of ammonium perchlorate-based composite propellants

Case Studies in Thermal Engineering
Ammonium perchlorate (AP) serves as a crucial component in solid propellants. Enhancing its thermal decomposition with catalysts improves the combustion performance of solid propellants significantly. To enhance the catalytic performance of metal-organic
Chenhe Feng, Baoyun Ye, Wangjian Cheng, Songchao Shi, Fengqi Zhao, Chongwei An, Jingyu Wang   +6 more
doaj   +1 more source

COMBUSTION MODELING OF COMPOSITE SOLID PROPELLANTS (PEM)

, 1982
A theoretical model for the combustion of composite solid propellants is described. This model, the Petite Ensemble Model (PEM), is based upon a combination of a unique statistical treatment of the burning surface of a composite solid propellant and a ...
RENIE, JOHN PAUL
core  

Micro-fibre based Porous Composite Propellants with High Regression Rates

, 2017
Harnessing energy at micro-scale from high energy sources has gained significance in recent times for space propulsion and other applications. Conventional solid rocket propellants have advantages in terms of being efficient, compact and safe to handle ...
Bharath, R.S., S. Chappa, Chandru, RA, R.A. Chandru, R.S. Bharath, B.N. Raghunandan, Oommen, C, Chappa, S, Bharath, RS, Chappa, S., Oommen, C., Raghunandan, BN, Raghunandan, B.N., Chandru, R.A., C. Oommen   +14 more
core   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Interpenetrating Polymer Networks as Binders for Solid Composite Propellants

, 2013
A new family of polymeric binders for solid composite propellants is proposed, based on two component interpenetrating polymer networks (IPNs). These networks comprise two different polyurethanes based on hydroxy terminated polybutadiene and ISRO ...
Jain, Sampat R., Ragunandan, B.N., Parthiban, S.   +2 more
core   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

In situ flame structure imaging of composite propellants using high-speed planar laser-induced fluorescence

, 2015
Ammonium perchlorate (AP) is the most commonly used oxidizer in solid rocket propellants due to its availability, high oxygen balance, and combustion characteristics.
Isert, Sarah
core  

A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine

Advanced Robotics Research, EarlyView.
This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff, Simon Holzer, Stefania Konstantinidi, Yoan Civet, Yves Perriard   +4 more
wiley   +1 more source

Hybrid Continuum Robot Designs and Architectures for Healthcare Applications

Advanced Robotics Research, EarlyView.
Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir, Muhammad A. Khalid, Manish Chauhan, Pietro Valdastri, James H. Chandler   +4 more
wiley   +1 more source

Combustion and thermal decomposition characteristics of composite solid propellants

, 1976
The role of thermal decomposition of the binder and the oxidiser in the thermal decomposition, ageing and combustion of composite solid-propellants has been investigated.
Verneker, VR Pai, Kishore, K
core