Results 61 to 70 of about 13,180 (230)

Multiplying Elements of Fragmentation? Polycentrism, the Launcher Crisis and the Future of Europe in Space

Global Policy, EarlyView.
ABSTRACT This article explores the current controversies surrounding the European Ariane launcher and its implications for the future of European space governance. The Ariane program, historically a symbol of European technopolitical integration, faces mounting challenges due to delays, rising costs and increasing competition from private actors like ...
Nina Klimburg‐Witjes, Joseph Popper
wiley   +1 more source

Analysis of the characteristics of the ejector mode of the pulse detonation propulsion system of the combined acceleration cycle

Авіаційно-космічна техніка та технологія
The subjects of this article are processes in the chamber of the pulse detonation propulsion system of the combined acceleration cycle (PSCA). The goal is to identify the most significant factors and study their influence on the defining characteristics ...
Olena Zolotko, Oleksandr Zolotko, Oleksandr Aksonov, Vitalii Stoliarchuk, Oleksandr Cherniavskyi   +4 more
doaj   +1 more source

Design issues for lunar in situ aluminum/oxygen propellant rocket engines [PDF]

Design issues for lunar ascent and lunar descent rocket engines fueled by aluminum/oxygen propellant produced in situ at the lunar surface were evaluated.
Meyer, Michael L.
core   +1 more source

NUMERICAL MODELING OF COMBUSTION PROCESSES IN HYBRID ROCKET ENGINES

International Journal of Energetic Materials and Chemical Propulsion, 2016
Nowadays, numerical simulations of combustion processes in hybrid rockets are generally considered as a qualitative tool used mainly to describe the flow field inside the rocket engine. A research effort is of major importance in order to change this trend.
Mazzetti, Alessandro, BARBANTE, PAOLO FRANCESCO   +1 more
openaire   +2 more sources

Towards an integrated molecular understanding of plant hormones

Journal of Integrative Plant Biology, EarlyView.
This review offers a comprehensive overview of the nine plant hormones, delving into their biosynthesis, transport, signaling and crosstalk mechanisms. Because the complexity of plant hormonal control goes beyond these core elements, additional specific features are discussed. Lastly, this review highlights how fundamental insights drive hormonal‐based
Louise Vilain, Marie‐Laure Fauconnier, Manon Genva   +2 more
wiley   +1 more source

Designing and Testing of HDPE–N₂O Hybrid Rocket Engine

Engineering Proceedings
Hybrid Rocket Engines (HREs) combine the advantages of solid and liquid propellants, offering thrust control, simplicity, safety, and cost efficiency.
Triyan Pal Arora, Noah Buttrey, Peter Kirman, Sanmukh Khadtare, Eeshaan Kamath, Dario del Gatto, Adriano Isoldi   +6 more
doaj   +1 more source

Investigation of the starting transients of high performance solid-propellant motors [PDF]

The starting transients of solid propellant engines were investigated to develop design principles for predicting transients in high performance igniter and engine configurations.
Caveny, L. H., Summerfield, M.
core   +1 more source

Aerospace vehicle [PDF]

, 1985
A dual structure aerospace vehicle is described which has an aeroshell structure and an internally disposed separable and reusable integral tank/thrust structure.
Jackson, L. R., Taylor, A. H.
core   +1 more source

Real-Gas Effects and Phase Separation in Underexpanded Jets at Engine-Relevant Conditions

, 2018
A numerical framework implemented in the open-source tool OpenFOAM is presented in this work combining a hybrid, pressure-based solver with a vapor-liquid equilibrium model based on the cubic equation of state.
Baab S., Bhaskar V. V. N., Bloomer O. T., Chang S., Cines M. R., Elliott J. R., Firoozabadi A., Goos E., Issa R. I., Kraposhin M. V., Lüdecke D., Matheis J., Mausbach P., Michelsen M. L., Min B. H., Poling B. E., Reid R. C., Wood A. B.   +17 more
core   +1 more source

Narrative reconstruction of the self: Living funerals as rituals of trauma and transformation

The Australian Journal of Anthropology, EarlyView.
Abstract Living funerals mark a radical reconfiguration of contemporary engagements with mortality, transforming death from an imposed ending into an actively authored narrative. This study examines the practice in Hong Kong's hybrid sociocultural landscape, where traditional Chinese death rituals collide with neoliberal selfhood and globalised ...
Yuen‐Ki Tang
wiley   +1 more source