Results 71 to 80 of about 1,322,842 (239)
Quality and Reliability Engineering International, EarlyView.ABSTRACT The growing availability of temporal data in agriculture has created new opportunities for data‐driven decision support systems aimed at improving the efficiency, sustainability, and adaptability of agricultural systems. Remote sensing platforms, weather‐related datasets, and field‐management records provide information on crop development and
Amalia Vanacore +4 more
wiley +1 more source
Journal of Thermal Science and Technology, 2011 In order to clarify flame behavior in the combustion chamber of swirling-oxidizer-flow-type hybrid rocket engines, a small hybrid rocket engine with a large quartz glass window was fabricated to observe the inside of the combustion chamber from the front
Saburo YUASA +5 more
doaj +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Engineering model for rocket exhaust plumes verified by CFD results [PDF]
, 2013 An engineering model (EM) is under development that describes the propagation of a rocket exhaust plume after the nozzle exit. The aim of this EM is to allow a fast analysis of the structure of the plume and the exhaust species within the plume.
Minutolo, Francesco +3 more
core
Conceptual design: Dependence of parameterization on design performance of three-stage hybrid rocket
Journal of Fluid Science and Technology, 2014 The subject of this paper is to improve on parameterization for conceptual design method of three stage hybrid rocket. Multi-Objective Genetic Algorithm (MOGA) is employed to solve multi-disciplinary design exploration of a three-stage launch vehicle ...
Masahiro KANAZAKI +5 more
doaj +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 +10 more
wiley +1 more source
Results in EngineeringHousehold cooking energy demand remains largely dependent on fossil fuels and traditional biomass, contributing to energy insecurity and greenhouse gas emissions.
Muhammad Amin +7 more
doaj +1 more source
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 +3 more
wiley +1 more source
Viability of an Electrically Driven Pump-Fed Hybrid Rocket for Small Launcher Upper Stages
Aerospace, 2019 An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is ...
Lorenzo Casalino +2 more
doaj +1 more source