Results 71 to 80 of about 978 (239)

Modal Analysis of Solid Rocket Motor

DEStech Transactions on Materials Science and Engineering, 2017
How to avoid the natural frequency closing to the environment disturbance frequency is a very complicated problem in the solid rocket motor engine .Once the resonance phenomenon happened, Solid rocket motors will be subjected to a larger dynamic stress environment, resulting in engine damage.
Yong-zhi ZHANG, Zhuo LI
openaire   +2 more sources

First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique

Mass Spectrometry Reviews, EarlyView.
ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley   +1 more source

Progressive Damage and Impact Behavior of Carbon Fiber/Epoxy‐Aluminum 2024‐T3 CARALL Composites: Experimental Investigation and Hybrid Finite Element Modeling Approach

Polymer Composites, EarlyView.
Experimental evaluation and hybrid FE modeling of drop‐weight impact damage behavior in 2/1 CARALL panels: A comparison of experimental and numerical results. ABSTRACT The present work investigates the dynamic response of Carbon Fiber Reinforced Epoxy Reinforced Aluminum 2024‐T3 FML with a 2/1 stacking arrangement subjected to low velocity impacts. Low
Mehmet İskender Özsoy, Ender Can Yakar, Sinan Fidan, Satılmış Ürgün, Mustafa Özgür Bora   +4 more
wiley   +1 more source

Assessing the Metrological Reliability of Static Firing Tests of Rocket Motors Through the Evaluation of Thrust and Total Impulse Measurement Uncertainty

Applied Sciences
A solid propellant rocket motor is a propulsion system used in missiles and rockets that burns a propellant, typically composed of a mixture of fuel and an oxidizer, to generate the thrust necessary to propel the vehicle.
Fernando de Paula Leite Castor, Carlos Roberto Hall Barbosa, Elcio Cruz de Oliveira   +2 more
doaj   +1 more source

Thermo-Structural Response Caused by Structure Gap and Gap Design for Solid Rocket Motor Nozzles

Energies, 2016
The thermo-structural response of solid rocket motor nozzles is widely investigated in the design of modern rockets, and many factors related to the material properties have been considered.
Lin Sun, Futing Bao, Ning Zhang, Weihua Hui, Shaozeng Wang, Nan Zhang, Heng Deng   +6 more
doaj   +1 more source

Effect of Resonant Mixer Granulation Parameters on Prill Properties

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Resonant mixing is a promising processing approach to manage mixing of materials with high solids content and has shown strong performance for mixing powders and pastes in energetic materials. This has led to the exploration of the approach for granulation of primary particles into millimeter‐sized agglomerates, including for generating ...
Hannah Cook, S. Emad Renfroe, Jessica Keith, Eleanor E. Radlinski, Albin Darby, Blair Brettmann   +5 more
wiley   +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

Evaluation of Mono and Bimetallic Ferrocene-Based 1,2,3-Triazolyl Compounds as Burning Rate Catalysts for Solid Rocket Motor. [PDF]

ACS Omega, 2023
Valdebenito C, Gaete J, Osorio C, Dibdalli Y, Norambuena Á, Lecaros N, Carrasco C, Reyes H, Abarca G, Morales-Verdejo C.   +9 more
europepmc   +1 more source

National Policy Coherence Counts for Reducing Inequality in Global Climate and Development Agendas

Sustainable Development, EarlyView.
ABSTRACT International institutions promote policy coherence as crucial to the effective and fair implementation of global sustainability agendas, though the evidence for its benefits is slim. We present here the first systematic cross‐country dataset on the consequences of national government efforts to promote policy coherence for vulnerable groups ...
Katherine Browne, Adis Dzebo, Zoha Shawoo, Mario Cardenas, Pierrick Chalaye, Alexia Faus Onbargi, Cassilde Muhoza, Patricia Nicdao, Nokwethaba Makhanya, Navam Niles, Priyatma Singh   +10 more
wiley   +1 more source

Strategy for One‐Step Optimization of Metal Oxide Passivating Contact Materials for Si Heterojunction Solar Cells through Growth Angle Variation

Small, EarlyView.
A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal, Alexis Franquet, Hans Hofsäss, Tapobrata Som   +3 more
wiley   +1 more source