Results 111 to 120 of about 118,726 (281)

George de Bothezat and his contribution into the world aviation and astronautics

open access: bronze, 2022
Dmitry Yurievich Zhurilo   +2 more
openalex   +1 more source

Numerical Study on the Self-Pulsation Characteristics of LOX/GH2 Swirl Coaxial Injector

open access: yesInternational Journal of Aerospace Engineering
To investigate the self-pulsation characteristics of a liquid-centered swirl coaxial injector with liquid oxygen (LOX) and gas hydrogen (GH2) as the working mediums under supercritical condition, a numerical simulation was employed.
Wentong Qiao   +7 more
doaj   +1 more source

Badiou and the Reconstruction of the Concept of God

open access: yesModern Theology, Volume 42, Issue 1, Page 187-209, January 2026.
Abstract In this article I first summarize Badiou’s and Žižek’s critique of the concept of God, which I and other interpreters conceive as a radicalization of the theology of the death of God. I then pose the question of how to formulate a positive conception of God after the death of God that would overcome the limits of negative or apophatic theology.
Michael Hauser
wiley   +1 more source

A backup orientation system based on inverse problems technique

open access: yesComputer Assisted Methods in Engineering and Science, 2019
The correct orientation of the spacecraft during a space flight is one of the main tasks of astronautics, because its orientation affects the correct operation of all subsystems, in particular power supply systems, where the orientation of solar panels ...
Aleksey V. Nenarokomov   +4 more
doaj  

Exploring In-Orbit Operations: Assessing Performance and Fault Management of the Student Small Satellite-1 (SSS-1)

open access: yesInternational Journal of Aerospace Engineering
Small satellites represent a pivotal advancement in space technology, offering versatile platforms for conducting educational missions with reduced costs. Initiated by the Asia-Pacific Space Cooperation Organization (APSCO), the Student Small Satellite-1
Bohan Liu   +5 more
doaj   +1 more source

Multiple Unmanned Aerial Vehicle Formation Control through Deep Reinforcement Learning with Offline Sample Correction

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 12, December 2025.
Herein, a deep reinforcement learning‐based multi‐UAV formation control approach is proposed. By optimizing the utilization of historical data through correcting of offline samples, the past experience is better leveraged and learning performance is improved.
Zhongkai Chen   +4 more
wiley   +1 more source

Static Equilibrium Characteristics of Full-Flow Staged Combustion Cycle Engine Under Different Propellants

open access: yesInternational Journal of Aerospace Engineering
The full-flow staged combustion cycle (FFSC) engine is a promising liquid rocket propulsion system owing to its capacity for high specific impulse. The present study introduces an equilibrium model of the FFSC engine, utilizing the Raptor engine as a ...
Haodong He   +5 more
doaj   +1 more source

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