Aerospace  

Diwakar Singh, Antonios F. Antoniadis, Panagiotis Tsoutsanis, Hyo-Sang Shin, Antonios Tsourdos, Samuel Mathekga and Karl W. Jenkins

This paper introduces a multi-fidelity computational framework for the analysis of aerodynamic performance of flight formation. The Vortex Lattice and Reynolds Averaged Navier–Stokes methods form the basis of the framework, as low- and high-fidelity... see more

Xiao-Su Yi, Xvfeng Zhang, Fangbo Ding and Jianfeng Tong

In the air and ground transportation sectors, new environmental regulations and societal concerns have triggered a search for new products and processes that complement resources and the environment. To address these issues, this article reports on curren... see more

Alessandro Rossi, Camilla Colombo, Kleomenis Tsiganis, James Beck, Jonathan Becedas Rodriguez, Scott Walker, Federico Letterio, Florio Dalla Vedova, Volker Schaus, Rada Popova, Alessandro Francesconi, Hedley Stokes, Thorn Schleutker, Elisa Maria Alessi, Giulia Schettino, Ioannis Gkolias, Despoina K. Skoulidou, Ian Holbrough, Franco Bernelli Zazzera, Enrico Stoll and Youngkyu Kim

The H2020 ReDSHIFT project aims at finding passive means to mitigate the proliferation of space debris. This goal is pursued by a twofold research activity based on theoretical astrodynamics, computer simulations and the analysis of legal aspects of space... see more

Jack Claricoats and Sam M. Dakka

The paper presents the development of the power, propulsion, and thermal systems for a 3U CubeSat orbiting Earth at a radius of 600 km measuring the radiation imbalance using the RAVAN (Radiometer Assessment using Vertically Aligned NanoTubes) payload dev... see more

Dimitrios Chionis and Nektarios Karanikas

In the aviation sector, the variability in the appreciation of safety risk perception factors and responses to risk behaviours has not been sufficiently studied for engineers and technicians. Through a questionnaire survey, this study investigated differe... see more

Aerospace Editorial Office

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Valery Zapryagaev, Nikolay Kiselev and Dmitry Gubanov

In the present paper, we give a brief overview of the studies of supersonic jet flows which were performed recently with the aim of gaining experimental data on the formation of the shock-wave structure and jet mixing layer in such flows. Considerable att... see more

Álvaro Rodríguez-Sanz, Fernando Gómez Comendador, Rosa Arnaldo Valdés, Jose Manuel Cordero García and Margarita Bagamanova

Air traffic networks, where airports are the nodes that interconnect the entire system, have a time-varying and stochastic nature. An incident in the airport environment may easily propagate through the network and generate system-level effects. This pape... see more

Manuel Hildebrandt, Heiko Schwarz, Corina Schwitzke, Hans-Jörg Bauer and Jens Friedrichs

Reducing losses in the secondary air system of gas and steam turbines can significantly increase the efficiency of such machines. Meanwhile, brush seals are a widely used alternative to labyrinth seals. Their most valuable advantage over other sealing con... see more

Hanno Rein, Daniel Tamayo and David Vokrouhlický

On 6 February 2018, SpaceX launched a Tesla Roadster on a Mars-crossing orbit. We perform N-body simulations to determine the fate of the object over the next 15 Myr. The orbital evolution is initially dominated by close encounters with the Earth. While a... see more

Ephraim Suhir

Rada Popova and Volker Schaus

The growth of orbital space debris is both a consequence of and a potential hindrance to space activities. The risks posed by space debris propagation in the most used orbital regions highlight the need to adequately address the challenges posed to the su... see more

Oliver Ohneiser, Malte Jauer, Jonathan R. Rein and Matt Wallace

TriControl is a controller working position (CWP) prototype developed by German Aerospace Center (DLR) to enable more natural, efficient, and faster command inputs. The prototype integrates three input modalities: speech recognition, eye tracking, and mul... see more

Stéphane Puechmorel, Guillaume Dufour and Romain Fèvre

Resilience to uncertainties must be ensured in air traffic management. Unexpected events can either be disruptive, like thunderstorms or the famous volcano ash cloud resulting from the Eyjafjallajökull eruption in Iceland, or simply due to imprecise ... see more

Kevin R. Gagne, M. Ryan McDevitt and Darren L. Hitt

This study focused on the development of a chemical micropropulsion system suitable for primary propulsion and/or attitude control for a nanosatellite. Due to the limitations and expense of current micropropulsion technologies, few nanosatellites with pro... see more

Fabian Bleier, Corina Schwitzke and Hans-Jörg Bauer

The paper presents the setup and analysis of an experimental study on heat transfer of a jet cooled compressor rear cone with adjacent conical housing. The main goal of the paper is to describe the systematic derivation of empirical correlations for globa... see more

Arvin Ebrahimkhanlou and Salvatore Salamone

This paper introduces two deep learning approaches to localize acoustic emissions (AE) sources within metallic plates with geometric features, such as rivet-connected stiffeners. In particular, a stack of autoencoders and a convolutional neural network ar... see more

Unnikrishnan Sasidharan Nair, Kalyan Goparaju and Datta Gaitonde

Underexpanded jets exhibit interactions between turbulent shear layers and shock-cell trains that yield complex phenomena that are absent in the more commonly studied perfectly expanded jets. We quantitatively analyze these mechanisms by considering the i... see more

Florio Dalla Vedova, Pierre Morin, Thibault Roux, Roberta Brombin, Alberto Piccinini and Nigel Ramsden

The paper introduces and describes the recent and still ongoing development activities performed in Luxembourg for In-Orbit Attach Mechanisms for (Drag) Sails Modules to be operated from Space Tugs. After some preparatory work aiming at understanding the ... see more

Mengmeng Zhang, Aidan Jungo, Alessandro Augusto Gastaldi and Tomas Melin

This paper discusses multi-fidelity aircraft geometry modeling and meshing with the common language schema CPACS. The CPACS interfaces are described, and examples of variable fidelity aerodynamic analysis results applied to the reference aircraft are pres... see more

Paola Di Mascio, Giuseppe Perta, Giuseppe Cantisani and Giuseppe Loprencipe

Proper planning around airports safeguards the surrounding territory from risks of air accidents. Many countries have defined Public Safety Zones (PSZs) beyond the runway thresholds as a result of targeted risk assessment methods. Therefore, national avia... see more

Christine Schubert Kabban, Richard Uber, Kevin Lin, Bin Lin, Md Yeasin Bhuiyan and Victor Giurgiutiu

The validation of structural health monitoring (SHM) systems for aircraft is complicated by the extent and number of factors that the SHM system must demonstrate for robust performance. Therefore, a time- and cost-efficient method for examining all of the... see more

Miguel Mujica Mota, Alejandro Di Bernardi, Paolo Scala and Gabriel Ramirez-Diaz

The aeronautical industry is expanding after a period of economic turmoil. For this reason, a growing number of airports are facing capacity problems that can sometimes only be resolved by expanding infrastructure, with the inherent risks that such decisi... see more

Mehdi Ghoreyshi, Ivan Greisz, Adam Jirasek and Matthew Satchell

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Carmine Varriale, Agostino De Marco, Elia Daniele, Jonas Schmidt and Bernhard Stoevesandt

This work focuses on the wake encounter problem occurring when a light, or very light, aircraft flies through or nearby a wind turbine wake. The dependency of the aircraft normal load factor on the distance from the turbine rotor in various flight and env... see more

Walter A. Silva

The origins, development, implementation, and application of AEROM, NASA’s patented reduced-order modeling (ROM) software, are presented. Using the NASA FUN3D computational fluid dynamic (CFD) code, full and ROM aeroelastic solutions are computed at sever... see more

Marilyne Philibert, Constantinos Soutis, Matthieu Gresil and Kui Yao

Low velocity impact induces barely visible damage in the form of matrix cracking or delamination that can grow under hydro-thermo-mechanical loading and possibly lead to catastrophic failure if not detected at an early stage. A network of piezoelectric tr... see more

Vincentius Ewald, Roger M. Groves and Rinze Benedictus

In this paper, we investigated transducer placement strategies for detecting cracks in primary aircraft structures using ultrasonic Structural Health Monitoring (SHM). The approach developed is for an expected damage location based on fracture mechanics, ... see more

Ahmed Raza

The cost of avionics maintenance is extremely high for modern aircraft. It can be as high as 30% of the aircraft maintenance cost. A great impact on the cost of avionics maintenance is provided by a high level of No Fault Found events (NFF). Intermittent ... see more

André Horstmann, Christopher Kebschull, Sven Müller, Eduard Gamper, Sebastian Hesselbach, Kerstin Soggeberg, Mohamed Khalil Ben Larbi, Marcel Becker, Jürgen Lorenz, Carsten Wiedemann and Enrico Stoll

The Institute of Space Systems at Technische Universität Braunschweig has long-term experience in the field of space debris modeling. This article reviews the current state of ongoing research in this area. Extensive activities are currently underway to u... see more