scholarly journals A computer application for parametric aircraft design

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Filipe R. Fraqueiro ◽  
Pedro F. Albuquerque ◽  
Pedro V. Gamboa
Keyword(s):  
User Interface ◽  
Unmanned Aerial Vehicles ◽  
Graphical User Interface ◽  
Aircraft Design ◽  
Computer Application ◽  
Preliminary Design ◽  
Two Dimensional ◽  
Design Phase ◽  
Aerial Vehicles

Abstract The present work describes the development and final result of a graphical user interface tailored for a mission-based parametric aircraft design optimization code which targets the preliminary design phase of unmanned aerial vehicles. This development was built from the XFLR5 open source platform and further benefits from two-dimensional aerodynamic data obtained from XFOIL. For a better understanding, the most important graphical windows are shown. In order to demonstrate the graphical user interface interaction with the aircraft designer, the results of a case study which maximizes payload are presented.

scholarly journals A model-based design methodology for flight control systems: Global 7500 pitch control case study

2021 ◽  
pp. 095441002110247
Author(s):  
Jonathan Liscouët
Keyword(s):  
Control Systems ◽  
Flight Control ◽  
High Performance ◽  
Design Methodology ◽  
Aircraft Design ◽  
Preliminary Design ◽  
Design Phase ◽  
Performance Requirements ◽  
Design Challenge

This article introduces an original model-based design methodology addressing a high-performance aircraft design challenge: conflicting performance requirements. The case study of the Global 7500 elevator actuation system also provides in-depth insight into the complex design process of today’s fly-by-wire flight control systems. The methodology presented here redefines the aircraft manufacturer’s involvement in the design process of the systems, implementing analysis and iteration capabilities early in system development. To this end, it introduces a novel modeling approach for analyzing loaded rate requirements by simulating closed-loop performance with a generic nonlinear second-order state filter, including the main performance limitations without requiring a preliminary design definition. In this way, it provides means to mature the system requirements and addresses requirement conflicts upfront. Then, a simulation-based preliminary sizing and performance assessment validates the candidate design concept. It also secures the preliminary design phase by implementing advanced design uncertainties and involving interfacing systems and disciplines early in the process. The redefined methodology identified directly that the problem’s root cause was a conflict between stability and control and flutter protection requirements. It also indicated that the first sizing driver is the response time required under a specific failure case. These findings lead to an optimal elevator actuator design compliant with matured performance requirements. Thus, the methodology resolved a design challenge blocking the Global 7500 aircraft development and prevented redesign occurrences later during the detailed design phase. In this way, it directly contributed to the successful development of the Global 7500 and its optimal operational performance. This methodology applies to future aircraft design challenges, and the technical insight provides valuable lessons learned for high-performance T-tail business jets.

Revealing Safety Risks of Unmanned Aerial Vehicles in Construction

2021 ◽  
pp. 036119812110171
Author(s):  
Mostafa Namian ◽  
Mohammad Khalid ◽  
George Wang ◽  
Yelda Turkan
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Construction Projects ◽  
The United States ◽  
Extensive Literature ◽  
Effective Strategies ◽  
Aerial Vehicles ◽  
Safety Risks ◽  
Potential Safety ◽  
Post Hoc

Unmanned aerial vehicles (UAVs) have gained their prevalent recognition in construction because of their exceptional advantages. Despite the increasing use of UAVs in the industry and their remarkable benefits, there are serious potential safety risks associated that have been overlooked. Construction is one of the most hazardous industries in the United States. In addition to the ordinary hazards normally present in dynamic construction workplaces, UAVs can expose workers to a wider range of never-before-seen safety risks that must be recognized and controlled. The industry is not equipped with safety measures to prevent potential accidents, because of scarce research on drone-associated hazards and risks. The aim of this research was to (1) identify the UAV-associated hazards in construction that may expose personnel and property to potential harms, and (2) study the relative impact of each hazard and the associated safety risks. In Phase I, the researchers conducted an extensive literature review and consulted with a construction UAV expert. In Phase II, the researchers obtained data from 54 construction experts validating and evaluating the identified hazards and risks. The results revealed that adopting UAVs can expose construction projects to a variety of hazards that the industry is not familiar with. “Collision with properties,”“collision with humans,” and “distraction” were identified as the top three safety risks. Moreover, the study introduces effective strategies, such as having qualified crew members, proper drone model selection, and drone maintenance, to mitigate the safety risks. Finally, a post-hoc case study was investigated and presented in this article.

scholarly journals An Automated System To Replace A Human User In Conventional Laboratory Well Plate Imaging

2017 ◽  
Author(s):  
Connor Verheyen ◽  
Cornelis Rowaan ◽  
Bryan Gatto ◽  
Daniel Gizachew
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Human Error ◽  
Imaging System ◽  
Automated System ◽  
Prototype System ◽  
Successful Implementation ◽  
Two Dimensional ◽  
Image Capture ◽  
Automated Calibration

We here developed an automated well plate imaging system to eliminate the requirement for continuous human operation, thus freeing up the valuable time of a scientific researcher and removing the possibility of fatigue-induced human error. Specifically, we created a prototype system with programmed two-dimensional movement, automated calibration, variable plate configuration compatibility, variable path feasibility, reliable well plate image capture, and an intuitive graphical user interface. Successful implementation of our device would immediately benefit laboratory scientists, giving them more time to pursue the next biomedical breakthroughs.

New Solutions and Methodologies for Data Acquisition and Management in Small Municipalities

2021 ◽  
pp. 103-123
Author(s):  
Rui Pedro Juliao ◽  
Amilton Amorim ◽  
João Paulo Hespanha ◽  
Guilherme Henrique Barros de Souza ◽  
Ronaldo Celso Messias Correia ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Spatial Data ◽  
Domain Model ◽  
Territorial Development ◽  
Paulo State ◽  
Land Administration ◽  
Aerial Vehicles ◽  
Data Infrastructures

Promoting and managing sustainable territorial development require adequate tools that enable territorial managers to formulate appropriate choices. Technological solutions have emerged, and the paradigm has shifted from isolated GIS to a more collaborative production and dissemination of geographic data using spatial data infrastructures (SDI). A critical dataset for municipal land administration is cadastre. ISO 19152 standard of the Land Administration Domain Model (LADM) was published in 2012. Also, technology evolution, namely unmanned aerial vehicles (UAV), has changed data acquisition for cadastre. These are three pillars of modern territorial management: openness, co-production, and data sharing (SDI); models (LADM); affordable technology (UAV). This chapter presents how municipalities can develop an SDI project, incorporating LADM guidelines and UAV data acquisition. The case study is based on a group of 32 small municipalities from São Paulo state, in Brazil, known as UNIPONTAL.

Simulation-Supported Early Stage Design Optimisation for a Case Study of Life Cycle Oriented Buildings

2019 ◽  
Vol 887 ◽  
pp. 353-360 ◽  
Author(s):  
Sören Eikemeier ◽  
Ardeshir Mahdavi ◽  
Robert Wimmer
Keyword(s):  
Life Cycle ◽  
Architectural Design ◽  
Early Stage ◽  
Preliminary Design ◽  
Design Phase ◽  
Design Optimisation ◽  
Stage Design ◽  
Simulation Based ◽  
Early Stage Design

To reduce the energy and resource consumption in the building sector this study is focusing on a design optimisation of life cycle oriented buildings. In order to optimise the performance of the buildings and in consequence also to achieve improved results for the mandatory Austrian energy certificate a simulation-based rapid design approach is used for the early stage design phase of the buildings, in particular for the architectural design of the buildings.Methods like the Window to Wall Ratio, at the very beginning of the design process, a parametric simulation with EnergyPlus or a more detailed optimisation approach with GenOpt are integrated in this study applied to example buildings. The results are showing that the method can be used in a circular approach for improving the heating demand of the Austrian energy certificate for this case study by more than 25 % compared to the preliminary design

scholarly journals Collecting Built Environment Information Using UAVs: Time and Applicability in Building Inspection Activities

2020 ◽  
Vol 12 (11) ◽  
pp. 4731
Author(s):  
Rachele Grosso ◽  
Umberto Mecca ◽  
Giuseppe Moglia ◽  
Francesco Prizzon ◽  
Manuela Rebaudengo
Keyword(s):  
Built Environment ◽  
Unmanned Aerial Vehicles ◽  
Industrial Sector ◽  
Construction Sector ◽  
Costs And Benefits ◽  
Aerial Vehicles ◽  
Ex Post ◽  
Ex Ante ◽  
Way Of Thinking

The Italian way of thinking about maintenance is too often one-sided. Indeed, it is considered not so much as a useful practice to prevent the occurrence of a fault (ex ante), but as an intervention to solve it (ex post). Analyzing the legislation relating to the construction sector, it can be seen that it does not clearly define the responsibilities, timescales and methods in which maintenance interventions must be planned and carried out. For this reason, this practice is still very weak compared, for example, to the industrial sector, where it is an established practice. Currently, the complexity of reading the maintenance plans drawn up by designers and the considerable costs associated with maintenance operations discourage owners and managers from even carrying out preliminary inspection operations. This research aims to stimulate these stakeholders to carry out inspection operations regularly, highlighting their costs and benefits. In particular, working on a case study in Piedmont, the costs of visual inspections carried out in the traditional way are compared with those that would be incurred if unmanned aerial vehicles (UAVs) were used. Finally, the collateral benefits of inspections carried out with UAVs are highlighted.

Design of Hospital Delivery Networks Using Unmanned Aerial Vehicles

2020 ◽  
Vol 2674 (5) ◽  
pp. 405-418 ◽  
Author(s):  
Alejandra Otero Arenzana ◽  
Jose Javier Escribano Macias ◽  
Panagiotis Angeloudis
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Optimal Number ◽  
Baseline Scenario ◽  
Urban Hospital ◽  
Aerial Vehicles ◽  
Strategic Model ◽  
Delivery Services ◽  
Location Algorithm ◽  
Delivery Networks

Unmanned aerial vehicles (UAVs) are being increasingly implemented in a range of applications. Their low payload capacity and ability to overcome congested road networks enables them to provide fast delivery services for urgent high-value low-volume cargo. This work investigates the economic viability of integrating UAVs into urban hospital supply chains. In doing so, a strategic model that determines the optimal configuration of supporting infrastructure for urgent UAV delivery between hospitals is proposed. The model incorporates a tailored facility location algorithm that selects an optimal number of hubs given a set of candidates and determines the number of UAVs required to fulfill total demand. The objective is to minimize the total cost of implementation, computed as the sum of generalized, battery, vehicle, and hub establishment costs. The model is applied to a case study based on the establishment of a UAV delivery network for deliveries between National Health Service (NHS) hospitals in London. A baseline scenario is also developed using current NHS vehicles for delivery. Results demonstrate that UAV-based delivery provides significant reductions in operational costs compared with the baseline. Furthermore, the analysis indicates the location of hubs is more significant to the solution optimality than any increase in range or payload.

Visual Inspection of Historical Buildings Using Unmanned Aerial Vehicles (UAV): A Case Study of Sultan Abu Bakar Mosque, Johor

2016 ◽  
Vol 22 (9) ◽  
pp. 2160-2163 ◽  
Author(s):  
Masiri Kaamin ◽  
Misbahul Muneer Abd Rahman ◽  
Norhayati Ngadiman ◽  
Aslila Abd Kadir ◽  
Ahmad Hakimi Mat Nor ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Visual Inspection ◽  
Historical Buildings ◽  
Aerial Vehicles
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