Results 61 to 70 of about 888 (231)

Aging of composite rocket fuels determining the characterization

, 2023
Fen Bilimleri Enstitüsü, Savunma Teknolojileri Ana Bilim DalıBu çalışmanın amacı, yapay olarak yaşlandırılmış ve yeni üretim katı kompozit roket yakıtlarının depolama ömrüne etki eden parametrelerin etkilerini araştırılmaktır.
Demir, Murat
core  

Influence of tris(2,3-epoxypropyl)isocyanurate as bonding agent on composite rocket propellant characteristics [PDF]

, 2016
Postupkom livenja izrađeni su uzorci kompozitnog raketnog goriva (KRG) i gorivno-vezivne komponente (GVK) na bazi karboksi-terminiranog poli(butadien-coakrilonitrila) (CTBN).
Brzić, Saša J.
core   +1 more source

Research on Solving the Structural Instability of Composite Propellants by Using Non-Ablative Cladding Layers

Aerospace
In a high-temperature test of the gas generator with a free-loading composite propellant, an abnormal jitter appeared in the latter part of the internal ballistic curve, whereas no such abnormality was observed in the low-temperature and normal ...
Gang Zhang, Mingming Zhan, Wen Feng, Youwen Tan, Yang Liu, Weihua Hui   +5 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Small‐Scale Magnetic Soft Robots for Medical Applications: From Laboratory to Clinical Use

SmartBot, EarlyView.
Small‐scale magnetic soft robots are emerging as promising platforms for minimally invasive diagnosis and therapy in complex in vivo environments. This review compares untethered and tethered medical magnetic robots in parallel across five translational stages, from basic performance testing to clinical evaluation.
Xingxing Ke, Shizhi Li, Tianrui Zhang, Yue Zhong, Songyang Li, Shuo Zhang, Zhiping Chai, Menghao Pu, Zisheng Zong, Haochen Yong, Xingxing Dong, Lanting Huang, Zhen Deng, Shuaizheng Yan, Yue Zhang, Zhaoju Zhu, Mingzhu Zhu, Linze Li, Ruiquan Chen, Shu Zhang, Chong Wu, Di Wu, Lei Yang, Rui Chen, Tongzhi Niu, Hongling Qin, Han Ding, Bingwei He, Siqi Wu, Zhigang Wu   +29 more
wiley   +1 more source

Influence of time on bond characteristics between extruded PVC tube and cast HTPB/IPDI rocket propellant [PDF]

Scientific Technical Review, 2017
This paper is dealing about the possibility of using thermoplastic material as an inhibitor for solid composite propellant in a long period of time. A basic point in this consideration is an analysis of bond characteristics between the extruded PVC tube ...
Radulović Jovan, Milojković Aleksandar
doaj  

Defining Lines of Defense Against Change Propagation Using Cause‐Consequence Analysis

Systems Engineering, EarlyView.
ABSTRACT Complex engineered systems are the core of modern society. So that engineered systems and infrastructure can be sustainable and offer value over the course of their lifespan, there is a growing need for such systems to be changeable. Yet, establishing and operationalizing changeability can be challenging due to the potential for change ...
Lindsey Jacobson, Scott Ferguson
wiley   +1 more source

Preliminary research of composite rocket propellants with hexogen and titanium oxide powder [PDF]

Scientific Technical Review, 2018
Composite solid propellants based on ammonium perchlorate/hydroxyl-terminated polybutadiene/isophorone dyisocyanate including two levels of hexogen (RDX) are presented in this paper. The mass of RDX increased in relation to oxidant, with constant bimodal fraction ratio.
Rodić Vesna, Bogosavljević Marica, Milojković Aleksandar, Mijatov Slavko   +3 more
openaire   +2 more sources

Undergraduate Women Socially Develop Science Identities Through Everyday Talk and Recognition: A Mixed Methods Study

Journal of Research in Science Teaching, EarlyView.
ABSTRACT Science identity is a key predictor of persistence in STEM. Although prior research has established the importance of social recognition for identity development, less is known about how recognition operates within informal, everyday interactions.
Jeanette Zambrano, Dustin B. Thoman, Aiko Jones   +2 more
wiley   +1 more source

Studies on composite solid propellant with tri-modal ammonium perchlorate containing an ultrafine fraction

Defence Technology, 2017
Composite solid propellant is prepared using tri-modal Ammonium perchlorate (AP) containing coarse, fine and ultrafine fractions of AP with average particle size (APS) 340, 40 and 5 μm respectively, in various compositions and their rheological ...
K.V. Suresh Babu, P. Kanaka Raju, C.R. Thomas, A. Syed Hamed, K.N. Ninan   +4 more
doaj   +1 more source