Results 71 to 80 of about 13,180 (230)
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
Situating African FinTech in Global Financial Networks
Transactions of the Institute of British Geographers, Volume 51, Issue 2, June 2026.Short Abstract This paper explores the geographical patterns of firm creation and investments in African FinTech and how they have evolved since the emergence of FinTech on the continent. Our findings show waves of investment, specialisation of different FinTech centres and the networks of FinTech capital.
Julien Migozzi, Dariusz Wójcik
wiley +1 more source
Optimization of the stand for test of hybrid rocket engines of solid fuel
MATEC Web of Conferences, 2017 In the paper the laboratory experimental stand of the hybrid rocket engine of solid fuel to study ballistic parameters of the engine at burning of high-energy materials in flow of hot gas is presented.
Zolotorev Nikolay +2 more
doaj +1 more source
Next generation earth-to-orbit space transportation systems: Unmanned vehicles and liquid/hybrid boosters [PDF]
The United States civil space effort when viewed from a launch vehicle perspective tends to categorize into pre-Shuttle and Shuttle eras. The pre-Shuttle era consisted of expendable launch vehicles where a broad set of capabilities were matured in a ...
Hueter, Uwe
core +1 more source
Tin Oxide‐Anchored MXene Composites for Enhanced Hydrogen Evolution in Alkaline Media
Advanced Materials Interfaces, Volume 13, Issue 9, 5 May 2026.The schematic illustrates a SnO2/MXene heterostructure for efficient hydrogen evolution. SnO2 nanoparticles are uniformly anchored on conductive MXene nanosheets, enhancing charge transfer and catalytic activity. The MXene substrate provides high electrical conductivity and abundant active sites, while SnO2 facilitates water adsorption and dissociation.
Pratik Shinde +8 more
wiley +1 more source
Advanced propulsion concepts [PDF]
The topics presented are covered in viewgraph form. The programmatic objective is to establish the feasibility of propulsion technologies for vastly expanded space activity.
Sercel, Joel C.
core +1 more source
Carbon Neutralization, Volume 5, Issue 3, May 2026.An electron structure modulation engineering strategy is developed by tuning the first coordination shell and leveraging synergistic effects with adjacent nanoparticles of Co single atoms. The CoS@Co–N2S2 catalyst achieves an average H2O2 selectivity of 88% (0.3–0.55 V), whereas CoS2@Co–NS3 exhibits 52% 4e− selectivity.
Yan Cheng +5 more
wiley +1 more source
Design and Optimization of a Hybrid Gas Generator for Hydrogen Peroxide Tank Pressurization
Challenges and Issues of Modern SciencePurpose. This study develops a pressurization system for hydrogen peroxide tanks using a hybrid gas generator powered by liquid oxygen and solid fuel.
Mykhailo Vorobei, Mykola Bondarenko
doaj
Investigation of the existing methods for designing pre-combustion chambers in hybrid rocket engines
Авіаційно-космічна техніка та технологіяHybrid propellant rocket engines (HPRE) have been under development and advancement since the beginning of rocket propulsion research, alongside liquid and solid propellant rocket motors.
Maurício Sá Gontijo
doaj +1 more source
MATEC Web of Conferences, 2016 On the basis of obtained analytical estimate of characteristics of hybrid solid-propellant rocket engine verification of earlier developed physical and mathematical model of processes in a hybrid solid-propellant rocket engine for quasi-steady-state flow
Zhukov Ilya S. +3 more
doaj +1 more source