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Products 201

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Applying AHP for supplier selection in aviation

The current systematic framework of aviation has developed complex air transport systems where reliability and performance are sensitive and instantly adaptive to the supply side due to the growing and elevated degree of demand in aviation market circumstances. The role of quality measurements has increased. Determining quality performance indicators is difficult because of the system's uniqueness, interdependency, and unsupportable characteristics. This is accomplished by using the 'analytical hierarchy process (AHP)' by developing a survey based on a three-level hierarchical model of the air transport supply-side quality dispersed among four groups of aviation professionals, namely 1) pilots 2) ATCOs 3) aircraft engineers, and 4) aviation managers. The scope of this study is to analyse the crucial components of the present air transportation system and draw a distinction between all the current system components.

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Thermodynamics, environmental damage cost, exergoeconomic, life cycle, and exergoenvironmental analyses of a JP-8 fueled turbodiesel aviation engine at take-off phase

The objective of this study is to evaluate the energetic, exergetic, sustainability, economic and environmental performances of a 4-cylinder turbodiesel aviation engine (TdAE) used on unmanned aerial vehicles for the take-off operation mode to assess the system with large aspects. Energy efficiency of the system is found as 43.158%, while exergy efficiency 40.655%. Thermoeconomic analysis gives information about the costs of the inlet and outlet energy and exergy flows of the engine. Hourly levelized total cost flow of the TdAE is found as 21.036 $/h, when the hourly fuel cost flow of the engine is found as 30.328 $/h. The waste exergy cost parameter is determined as 0.0144 MJ/h/$ from exergy cost-energy-mass (EXCEM) analysis, while it is estimated as 14.043 MJ/$ from modified-EXCEM analysis. Environmental damage cost analysis evaluates the cost formation of the exhaust emissions. The total environmental damage cost of the TdAE is computed as 12.895 $/h whilst specific environmental damage cost is determined as 0.054 $/MJ for 494.145 MJ/h TdAE power production. It is assessed that the main contributors to the environmental impact rate of the TdAE are the fuel consumption and the formation pollutants of combustion reaction.

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Thermodynamics, environmental damage cost, exergoeconomic, life cycle, and exergoenvironmental analyses of a JP-8 fueled turbodiesel aviation engine at take-off phase

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Measuring safety in aviation

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People 4

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Eke Eijgelaar

Researcher

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Frenchez Pietersz

Lecturer/researcher

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Harald Buijtendijk

Senior lecturer and researcher

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PM Peeters

Professor

Projects 15

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Biobased Sustainable Aviation Fuel

Ons voorstel ‘Biobased Sustainable Aviation Fuel’, richt zich op het ontwikkelen van een nieuwe productieroute voor sustainable aviation fuels (SAFs). Hiermee wordt invulling gegeven aan de behoefte van de luchtvaartindustrie om alternatieve productieroutes voor SAF te ontwikkelen. Deze behoefte komt voort uit het verplicht bijmengen van SAF in conventionele kerosine. Ook hebben bestaande routes voor SAFs te maken met oplopende tekorten in grondstoffen. De productieroute in dit project maakt gebruik van vetzuren, waarmee een veelheid van afvalstromen kan worden verwerkt naar brandstoffen. De vetzuren uit dit project worden geproduceerd door ChainCraft uit organische reststromen via fermentatie. ChainCraft is begonnen als startup vanuit Wageningen Universiteit en heeft bewezen per jaar ongeveer 2000 ton vetzuren te kunnen produceren. Met een chemische reactie worden deze vetzuren omgezet naar ketonen. Dit wordt ketonisatie genoemd. Deze ketonen kunnen opgewerkt worden naar SAF, maar kunnen ook andere chemische toepassingen hebben, zoals het vervangen van palmolie. Het keton dat ontstaat is dus een tussenproduct waarmee verschillende markten bedient kunnen worden. Dit is van belang voor ChainCraft dat nieuwe markten voor haar vetzuren wil ontsluiten. De belangrijkste te ontwikkelen stap in deze productieroute is de verbetering en optimalisatie van de ketonisatiereactie. Dit wordt gedaan door de Hogeschool Rotterdam bij het CoE HRTech, binnen het cluster Verduurzaming Industrie en de opleiding Chemische Technologie. Bij de ketonisatiereactie ontstaat calciumhydroxide als bijproduct. Door dit terug te voeren naar het fermentatieproces kunnen de integrale proceskosten verlaagd worden en de milieu impact gereduceerd. Deze verbeterde fermentatie wordt door ChainCraft geanalyseerd. De te verwachten milieubesparing is 67% minder broeikasgasemissies ten opzichte van petrochemische kerosine. De te verwachten productiekosten zijn vergelijkbaar met gangbare SAFs. Naast ChainCraft en de Hogeschool Rotterdam wordt het voorstel gesteund door SkyNRG. SkyNRG is sinds 2010 de wereldwijde leider op het gebied van SAFs.

Ongoing

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Carbon management for tour operators (CARMATOP)

Client: Foundation Innovation Alliance (SIA - Stichting Innovatie Alliantie) with funding from the ministry of Education, Culture and Science (OCW) Funder: RAAK (Regional Attention and Action for Knowledge circulation) The RAAK scheme is managed by the Foundation Innovation Alliance (SIA - Stichting Innovatie Alliantie) with funding from the ministry of Education, Culture and Science (OCW). Early 2013 the Centre for Sustainable Tourism and Transport started work on the RAAK-MKB project ‘Carbon management for tour operators’ (CARMATOP). Besides NHTV, eleven Dutch SME tour operators, ANVR, HZ University of Applied Sciences, Climate Neutral Group and ECEAT initially joined this 2-year project. The consortium was later extended with IT-partner iBuildings and five more tour operators. The project goal of CARMATOP was to develop and test new knowledge about the measurement of tour package carbon footprints and translate this into a simple application which allows tour operators to integrate carbon management into their daily operations. By doing this Dutch tour operators are international frontrunners.Why address the carbon footprint of tour packages?Global tourism contribution to man-made CO2 emissions is around 5%, and all scenarios point towards rapid growth of tourism emissions, whereas a reverse development is required in order to prevent climate change exceeding ‘acceptable’ boundaries. Tour packages have a high long-haul and aviation content, and the increase of this type of travel is a major factor in tourism emission growth. Dutch tour operators recognise their responsibility, and feel the need to engage in carbon management.What is Carbon management?Carbon management is the strategic management of emissions in one’s business. This is becoming more important for businesses, also in tourism, because of several economical, societal and political developments. For tour operators some of the most important factors asking for action are increasing energy costs, international aviation policy, pressure from society to become greener, increasing demand for green trips, and the wish to obtain a green image and become a frontrunner among consumers and colleagues in doing so.NetworkProject management was in the hands of the Centre for Sustainable Tourism and Transport (CSTT) of NHTV Breda University of Applied Sciences. CSTT has 10 years’ experience in measuring tourism emissions and developing strategies to mitigate emissions, and enjoys an international reputation in this field. The ICT Associate Professorship of HZ University of Applied Sciences has longstanding expertise in linking varying databases of different organisations. Its key role in CARMATOP was to create the semantic wiki for the carbon calculator, which links touroperator input with all necessary databases on carbon emissions. Web developer ibuildings created the Graphical User Interface; the front end of the semantic wiki. ANVR, the Dutch Association of Travel Agents and Tour operators, represents 180 tour operators and 1500 retail agencies in the Netherlands, and requires all its members to meet a minimum of sustainable practices through a number of criteria. ANVR’s role was in dissemination, networking and ensuring CARMATOP products will last. Climate Neutral Group’s experience with sustainable entrepreneurship and knowledge about carbon footprint (mitigation), and ECEAT’s broad sustainable tourism network, provided further essential inputs for CARMATOP. Finally, most of the eleven tour operators are sustainable tourism frontrunners in the Netherlands, and are the driving forces behind this project.

Finished

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Circular reduction option for mobility and holidays.

PBL is the initiator of the Work Programme Monitoring and Management Circular Economy 2019-2023, a collaboration between CBS, CML, CPB, RIVM, TNO, UU. Holidays and mobility are part of the consumption domains that PBL researches, and this project aims to calculate the environmental gains per person per year of the various circular behavioural options for both holiday behaviour and daily mobility. For both behaviours, a range of typical (default) trips are defined and for each several circular option explored for CO2 emissions, Global warming potential and land use. The holiday part is supplied by the Centre for Sustainability, Tourism and Transport (CSTT) of the BUas Academy of Tourism (AfT). The mobility part is carried out by the Urban Intelligence professorship of the Academy for Built Environment and Logistics (ABEL).The research question is “what is the environmental impact of various circular (behavioural) options around 1) holidays and 2) passenger mobility?” The consumer perspective is demarcated as follows:For holidays, transportation and accommodation are included, but not food, attractions visited and holiday activitiesFor mobility, it concerns only the circular options of passenger transport and private means of transport (i.e. freight transport, business travel and commuting are excluded). Not only some typical trips will be evaluated, but also the possession of a car and its alternatives.For the calculations, we make use of public databases, our own models and the EAP (Environmental Analysis Program) model developed by the University of Groningen. BUAs projectmembers: Centre for Sustainability, Tourism and Transport (AT), Urban Intelligence (ABEL).

Finished

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Data mining for MRO process optimization

In order to stay competitive and respond to the increasing demand for steady and predictable aircraft turnaround times, process optimization has been identified by Maintenance, Repair and Overhaul (MRO) SMEs in the aviation industry as their key element for innovation. Indeed, MRO SMEs have always been looking for options to organize their work as efficient as possible, which often resulted in applying lean business organization solutions. However, their aircraft maintenance processes stay characterized by unpredictable process times and material requirements. Lean business methodologies are unable to change this fact. This problem is often compensated by large buffers in terms of time, personnel and parts, leading to a relatively expensive and inefficient process. To tackle this problem of unpredictability, MRO SMEs want to explore the possibilities of data mining: the exploration and analysis of large quantities of their own historical maintenance data, with the meaning of discovering useful knowledge from seemingly unrelated data. Ideally, it will help predict failures in the maintenance process and thus better anticipate repair times and material requirements. With this, MRO SMEs face two challenges. First, the data they have available is often fragmented and non-transparent, while standardized data availability is a basic requirement for successful data analysis. Second, it is difficult to find meaningful patterns within these data sets because no operative system for data mining exists in the industry. This RAAK MKB project is initiated by the Aviation Academy of the Amsterdam University of Applied Sciences (Hogeschool van Amsterdan, hereinafter: HvA), in direct cooperation with the industry, to help MRO SMEs improve their maintenance process. Its main aim is to develop new knowledge of - and a method for - data mining. To do so, the current state of data presence within MRO SMEs is explored, mapped, categorized, cleaned and prepared. This will result in readable data sets that have predictive value for key elements of the maintenance process. Secondly, analysis principles are developed to interpret this data. These principles are translated into an easy-to-use data mining (IT)tool, helping MRO SMEs to predict their maintenance requirements in terms of costs and time, allowing them to adapt their maintenance process accordingly. In several case studies these products are tested and further improved. This is a resubmission of an earlier proposal dated October 2015 (3rd round) entitled ‘Data mining for MRO process optimization’ (number 2015-03-23M). We believe the merits of the proposal are substantial, and sufficient to be awarded a grant. The text of this submission is essentially unchanged from the previous proposal. Where text has been added – for clarification – this has been marked in yellow. Almost all of these new text parts are taken from our rebuttal (hoor en wederhoor), submitted in January 2016.

Finished

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Envisioning Tourism in 2030: on target to net zero.

In the Glasgow declaration (2021), the tourism sector promised to reduce its CO2 emissions by 50% and reduce them to zero by 2050. The urgency is felt in the sector, and small steps are made at company level, but there is a lack of insight and overview of effective measures at global level.This study focuses on the development of a necessary mix of actions and interventions that the tourism sector can undertake to achieve the goal of a 50% reduction in greenhouse gases by 2030 towards zero emissions by 2050. The study contributes to a better understanding of the paths that the tourism sector can take to achieve this and their implications for the sector. The aim of the report is to spark discussion, ideas and, above all, action.The study provides a tool that positively engages the sector in the near and more distant future, inspires discussion, generates ideas, and drives action. In addition, there will be a guide that shows the big picture and where the responsibilities lie for the reduction targets. Finally, the researchers come up with recommendations for policymakers, companies, and lobbyists at an international and European level.In part 1 of the study, desk research is used to lay the foundation for the study. Here, the contribution of tourism to global greenhouse gas emissions is mapped out, as well as the image and reputation of the sector on climate change. In addition, this section describes which initiatives in terms of, among other things, coalitions and declarations have already been taken on a global scale to form a united front against climate change.In part 2, 40 policies and measures to reduce greenhouse gas emissions in the sector are evaluated in a simulation. For this simulation, the GTTMdyn simulation model, developed by Paul Peeters from BUAS, is used which works on a global scale and shows the effect of measures on emissions, tourism, transport, economy, and behaviour. In this simulation, the researchers can 'test' measures and learn from mistakes. In the end one or more scenarios will; be developed that reach the goals of 50% reduction in 2030 and zero emissions in 2050. In part 3, the various actions that should lead to the reduction targets are tested against the impacts on the consequences for the global tourism economy, its role in providing leisure and business opportunities and the consequences for certain destinations and groups of industry stakeholders. This part will be concluded with two workshops with industry experts to reflect on the results of the simulation.Part 4 reports the results of the study including an outline of the consequences of possibly not achieving the goal. With this, the researchers want to send a warning signal to stakeholders who may be resistant to participating in the transition.

Finished

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Future Improvements for Composite Sustainable Automated Repair (FIXAR)

Het project FIXAR richt zich op het beantwoorden van de vraag: Hoe kan de luchtvaart- en windenergiesector composietenreparaties middels geautomatiseerde technologieën economisch verantwoord maken? Deze vraag komt voort uit eerdere ervaringen in RAAK-mkb projecten op het gebied van composietfabricage, oriëntatie op de nationale en internationale markt en uit de feedback van het betrokken mkb. Het mkb staat voor de uitdaging kennis en ervaring met automatiseringsoplossingen op te doen en nieuwe inspectietechnologieën in te voeren, wil het de groeiende behoefte aan composietenreparaties het hoofd bieden. De doelstelling van het project is dan ook, het door praktijkgericht onderzoek ontwikkelen van geautomatiseerde methoden voor duurzame geautomatiseerde composietenreparaties die technisch- en economisch haalbaar zijn. Om dit doel te bereiken wordt door Hogeschool Inholland samengewerkt met een aantal kennisinstituten en mkb-partners. Het project is opgebouwd rondom vier deelonderzoeken. Hiermee zijn alle aspecten van composietenreparaties gedekt; hulpmiddelen voor geautomatiseerde reparaties, inspectie en validatie, materiaalonderzoek en opleiding van medewerkers. Gelet op de state of the art-kennis, ligt de focus op luchtvaart en windenergie. Het zijn namelijk juist deze twee sectoren die het meest van elkaar kunnen profiteren. Binnen de deelonderzoeken komen state of the art-zaken aan bod als drones en Augement Reality. Aangezien het onderzoek zich richt op actuele problemen bij de bedrijven, zal een deel van het onderzoek bij de bedrijven zelf plaatsvinden en kunnen deze bedrijven direct profiteren van de resultaten van het onderzoek. In het onderwijs komen stage- en afstudeerplekken beschikbaar voor de studenten van de deelnemende hogescholen. Daarnaast vindt er een duurzame vertaalslag plaats van de projectresultaten en bevindingen middels het realiseren van onderwijsmateriaal t.b.v. de curricula van de opleidingen aviation, luchtvaarttechnologie, werktuigbouwkunde, en technische informatica. Het project heeft een blijvende impact op de beroepspraktijk omdat het deelnemende mkb met de resultaten uit dit project hun kennis van reparatieprocessen op hoger niveau brengt.

Finished

Products 201

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Applying AHP for supplier selection in aviation

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