Results 101 to 110 of about 9,883 (263)

Concept Evaluation of Radical Short–Medium-Range Aircraft with Turbo-Electric Propulsion

Aerospace
Ambitious targets for the coming decades have been set for further reductions in aviation greenhouse gas emissions. Hybrid electric propulsion (HEP) concepts offer potential for the mitigation of these aviation emissions. To investigate this potential in
W. J. Vankan, W. F. Lammen, E. Scheers, P. J. Dewitte, Sebastien Defoort   +4 more
doaj   +1 more source

Concept Study for a Mach 6 Transport Aircraft

, 2009
A conceptual study is here presented and discusscd on the possibility to transport 200 passengers over a distance of about 7000km in a nominal point-to-point mission through the Atlantic (either London-New York or London-Rio) at a cruise Mach number of 6
Coulouvrat, F., Carrier, G., Thepot, R., Dittrich, R., Salah El Din, I., Perigo, D., Sippel, M., Atanassov, U., Jarlas, R., Longo, J.M.A., Steelant, J., Banuti, D., Klevanski, J., Loubeau, A., Rabia, H., Duveau, Ph.   +15 more
core  

The Coloniality of Data: Police Databases and the Rationalization of Surveillance from Colonial Vietnam to the Modern Carceral State

The British Journal of Sociology, EarlyView.
ABSTRACT Tracing the early adoption of computer gang databases by the Los Angeles County Sheriff's Department and the Los Angeles Police Department in the 1980s to the deployment of computationally‐assisted surveillance during the Vietnam War, this paper uses a genealogical approach to compare surveillance technologies developed across the arc of ...
Christina Hughes
wiley   +1 more source

A comparative study of different propulsion models for hybrid electric aircraft

, 2020
International audienceThis paper addresses the topic of multidisciplinary analysis (MDA) applied to hybrid electric aircraft (HEA) design focusing on the analysis of multi-fidelity models for hybrid electric powertrain design.
Jordan, Arnaud, Palladino, Vincenzo, Pommier-Budinger, Valérie, Dubreuil, Sylvain, Bénard, Emmanuel, Defoort, Sébastien, Schmollgruber, Peter, Bartoli, Nathalie   +7 more
core  

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

Global Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +1 more source

New Frontiers in EU Trade Policy: Moving Beyond Conventional Trade Agreements

Global Policy, EarlyView.
ABSTRACT As the rules‐based international trading system faces stagnation and increasing unilateralism, the European Union's trade policy must evolve beyond conventional free trade agreements (FTAs). This article examines recent trends in EU trade agreements, highlighting not only their expanded scope to include areas such as digital trade ...
Niall Moran
wiley   +1 more source

Aeroelastic Wing Shaping Using Distributed Propulsion

, 2017
An aircraft has wings configured to twist during flight. Inboard and outboard propulsion devices, such as turbofans or other propulsors, are connected to each wing, and are spaced along the wing span.
Nguyen, Nhan T., Ting, Eric B., Reynolds, Kevin Wayne   +2 more
core  

The Unintended Consequences of German Deterrence

Global Policy, EarlyView.
ABSTRACT Germany's evolving deterrence posture boils down to continued participation in NATO nuclear sharing and an ambitious conventional rearmament program. Due to its non‐nuclear status and a result of decades of underinvestment, Germany prioritizes modern conventional weapons.
Ulrich Kühn
wiley   +1 more source

Advancements in Aircraft Propulsion Technologies

, 2019
Rocket propulsion systems serve as the bedrock of human area exploration, propelling our endeavors into the vastness of the cosmos. This paper delves into the area of rocket propulsion advancements, charting the evolutionary trajectory from traditional chemical rockets to groundbreaking innovations poised to redefine the destiny of space tour.The ...
Bhavesh Jain, Vaishali Anil Kumar
openaire   +1 more source

Propeller Design for a future QESTOL Aircraft in the BNF Project

, 2012
Due to increasing airport congestion the German research project 'Bürgernahes Flugzeug' (BNF, citizen friendly airplane) investigates the potential of aircraft for a possible future air transportation system integrating small airports.
Carsten Lenfers, Lenfers, Carsten
core   +1 more source