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Open Access
Article
Publication date: 6 February 2019

Aleksandrs Urbahs and Vladislavs Zavtkevics

This paper aims to analyze the application of remotely piloted aircraft (RPA) for remote oil spill sensing.

1731

Abstract

Purpose

This paper aims to analyze the application of remotely piloted aircraft (RPA) for remote oil spill sensing.

Design/methodology/approach

This paper is an analysis of RPA strong points.

Findings

To increase the accuracy and eliminate potentially false contamination detection, which can be caused by external factors, an oil thickness measurement algorithm is used with the help of the multispectral imaging that provides high accuracy and is versatile for any areas of water and various meteorological and atmospheric conditions.

Research limitations/implications

SWOT analysis of implementation of RPA for remote sensing of oil spills.

Practical implications

The use of RPA will improve the remote sensing of oil spills.

Social implications

The concept of oil spills monitoring needs to be developed for quality data collection, oil pollution control and emergency response.

Originality/value

The research covers the development of a method and design of a device intended for taking samples and determining the presence of oil contamination in an aquatorium area; the procedure includes taking a sample from the water surface, preparing it for transportation and delivering the sample to a designated location by using the RPA. The objective is to carry out the analysis of remote oil spill sensing using RPA. The RPA provides a reliable sensing of oil pollution with significant advantages over other existing methods. The objective is to analyze the use of RPA employing all of their strong points. In this paper, technical aspects of sensors are analyzed, as well as their advantages and limitations.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 4
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 1 April 1997

Reg G. Austin

Explains the raison d’être of the Sprite aerial robot and describes the system engineering, including a description of a range of interchangeable payloads to suit various mission…

385

Abstract

Explains the raison d’être of the Sprite aerial robot and describes the system engineering, including a description of a range of interchangeable payloads to suit various mission applications. Outlines the performance and control of the robot, and discusses its special characteristics, showing its adaptability for a number of roles, military and civilian. Identifies further applications of the system, which has been trialled in a number of applications worldwide. Finally, explains its current status and indicates the first costs of the system.

Details

Industrial Robot: An International Journal, vol. 24 no. 2
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 12 June 2020

Amirreza Kosari, Alireza Sharifi, Alireza Ahmadi and Masoud Khoshsima

Attitude determination and control subsystem (ADCS) is a vital part of earth observation satellites (EO-Satellites) that governs the satellite’s rotational motion and pointing. In…

Abstract

Purpose

Attitude determination and control subsystem (ADCS) is a vital part of earth observation satellites (EO-Satellites) that governs the satellite’s rotational motion and pointing. In designing such a complicated sub-system, many parameters including mission, system and performance requirements (PRs), as well as system design parameters (DPs), should be considered. Design cycles which prolong the time-duration and consequently increase the cost of the design process are due to the dependence of these parameters to each other. This paper aims to describe a rapid-sizing method based on the design for performance strategy, which could minimize the design cycles imposed by conventional methods.

Design/methodology/approach

The proposed technique is an adaptation from that used in the aircraft industries for aircraft design and provides a ball-park figure with little engineering man-hours. The authors have shown how such a design technique could be generalized to cover the EO-satellites platform ADCS. The authors divided the system requirements into five categories, including maneuverability, agility, accuracy, stability and durability. These requirements have been formulated as functions of spatial resolution that is the highest level of EO-missions PRs. To size, the ADCS main components, parametric characteristics of the matching diagram were determined by means of the design drivers.

Findings

Integrating the design boundaries based on the PRs in critical phases of the mission allowed selecting the best point in the design space as the baseline design with only two iterations. The ADCS of an operational agile EO-satellite is sized using the proposed method. The results show that the proposed method can significantly reduce the complexity and time duration of the performance sizing process of ADCS in EO-satellites with an acceptable level of accuracy.

Originality/value

Rapid performance sizing of EO-satellites ADCS using matching diagram technique and consequently, a drastic reduction in design time via minimization of design cycles makes this study novel and represents a valuable contribution in this field.

Article
Publication date: 2 January 2018

N. Aswini, E. Krishna Kumar and S.V. Uma

The purpose of this paper is to provide an overview of unmanned aerial vehicle (UAV) developments, types, the major functional components of UAV, challenges, and trends of UAVs…

1073

Abstract

Purpose

The purpose of this paper is to provide an overview of unmanned aerial vehicle (UAV) developments, types, the major functional components of UAV, challenges, and trends of UAVs, and among the various challenges, the authors are concentrating more on obstacle sensing methods. This also highlights the scope of on-board vision-based obstacle sensing for miniature UAVs.

Design/methodology/approach

The paper initially discusses the basic functional elements of UAV, then considers the different challenges faced by UAV designers. The authors have narrowed down the study on obstacle detection and sensing methods for autonomous operation.

Findings

Among the various existing obstacle sensing techniques, on-board vision-based obstacle detection has better scope in the future requirements of miniature UAVs to make it completely autonomous.

Originality/value

The paper gives original review points by doing a thorough literature survey on various obstacle sensing techniques used for UAVs.

Details

International Journal of Intelligent Unmanned Systems, vol. 6 no. 1
Type: Research Article
ISSN: 2049-6427

Keywords

Article
Publication date: 1 March 1984

Comprehensive electrical and electromagnetic tests have been successfully completed on the full‐scale electrical engineering version of the GIOTTO spacecraft in the…

Abstract

Comprehensive electrical and electromagnetic tests have been successfully completed on the full‐scale electrical engineering version of the GIOTTO spacecraft in the Electromagnetic Compatibility Test Facility at British Aerospace Dynamics Group at Bristol. GIOTTO will intercept Halley's Comet when it approaches the ecliptic plane of Earth in 1986.

Details

Aircraft Engineering and Aerospace Technology, vol. 56 no. 3
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 25 January 2008

Gilbert Justin Jose Nesamani, Sunil Chandrakant Joshi, Zhanli Jin, Poh Keong Chan and Soon Cheng Lee

This paper seeks to provide an insight into the design and development of the thermal test model (TTM) of X‐Sat, a 120 kg class micro‐satellite, being developed at the Centre…

Abstract

Purpose

This paper seeks to provide an insight into the design and development of the thermal test model (TTM) of X‐Sat, a 120 kg class micro‐satellite, being developed at the Centre. This model was specifically constructed for carrying out a thermal balance test (TBT) in a 4 m diameter vertical thermal vacuum chamber.

Design/methodology/approach

The construction of the thermal model followed a structural mock‐up model which was modified thermally to suit the purpose. Specific and careful consideration was given to the geometry and, more importantly, thermal characteristics such as thermal mass, surface properties, etc. to mimic the actual satellite configuration as closely as possible. Test plans were devised to qualify the fabricated components to meet the out‐gassing and other thermal requirements for the model. Design and qualification of supporting frame and linkages for TBT are also covered.

Findings

It is possible to simulate the thermal characteristics of a micro‐satellite in orbit under a different mission scenario through proper scaling and using alternative material options while developing TTM.

Originality/value

The paper discusses in detail the simplified cost‐effective approach of constructing TTM and also outlines the various issues to be considered for a TBT. It provides valuable information needed for micro‐satellite designers.

Details

Aircraft Engineering and Aerospace Technology, vol. 80 no. 1
Type: Research Article
ISSN: 0002-2667

Keywords

Content available
Article
Publication date: 10 July 2007

98

Abstract

Details

Aircraft Engineering and Aerospace Technology, vol. 79 no. 4
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 17 September 2021

Sukumar Rajendran, Sandeep Kumar Mathivanan, Prabhu Jayagopal, Kumar Purushothaman Janaki, Benjula Anbu Malar Manickam Bernard, Suganya Pandy and Manivannan Sorakaya Somanathan

Artificial Intelligence (AI) has surpassed expectations in opening up different possibilities for machines from different walks of life. Cloud service providers are pushing. Edge…

Abstract

Purpose

Artificial Intelligence (AI) has surpassed expectations in opening up different possibilities for machines from different walks of life. Cloud service providers are pushing. Edge computing reduces latency, improving availability and saving bandwidth.

Design/methodology/approach

The exponential growth in tensor processing unit (TPU) and graphics processing unit (GPU) combined with different types of sensors has enabled the pairing of medical technology with deep learning in providing the best patient care. A significant role of pushing and pulling data from the cloud, big data comes into play as velocity, veracity and volume of data with IoT assisting doctors in predicting the abnormalities and providing customized treatment based on the patient electronic health record (EHR).

Findings

The primary focus of edge computing is decentralizing and bringing intelligent IoT devices to provide real-time computing at the point of presence (PoP). The impact of the PoP in healthcare gains importance as wearable devices and mobile apps are entrusted with real-time monitoring and diagnosis of patients. The impact edge computing of the PoP in healthcare gains significance as wearable devices and mobile apps are entrusted with real-time monitoring and diagnosis of patients.

Originality/value

The utility value of sensors data improves through the Laplacian mechanism of preserved PII response to each query from the ODL. The scalability is at 50% with respect to the sensitivity and preservation of the PII values in the local ODL.

Details

International Journal of Intelligent Computing and Cybernetics, vol. 15 no. 1
Type: Research Article
ISSN: 1756-378X

Keywords

Case study
Publication date: 4 September 2021

Susan White and Protiti Dastidar

In a typical strategy course, growth strategies like mergers and acquisitions (corporate strategy) are introduced in the second half of the course. To analyze the case, students…

Abstract

Theoretical Basis

In a typical strategy course, growth strategies like mergers and acquisitions (corporate strategy) are introduced in the second half of the course. To analyze the case, students will use strategies such as Porter’s five forces and resource-based view and will discuss why firms pursue mergers as a growth strategy, along with sources of synergies and risks in mergers. Finance theory used includes analyzing a given discounted cash flow analysis and perform a comparable multiples analysis to find the value of a merger target.

Research Methodology

The industry and financial information in the case comes from publicly available sources, including company 10K reports, business press reports and publicly available industry reports. The information about Lockheed Martin’s strategy comes from interviews with Peter Clyne, former vice president for Lockheed Martin’s IS&GS division. He then held the same position for Leidos Holding Corp., after the IS&GS division was divested and incorporated into Leidos.

Case overview/synopsis

This case is an interdisciplinary case containing aspects of strategy and finance. Lockheed Martin made a strategic move in 2016, to divest its Information Systems & Global Strategies Division (IS&GS), which engaged in government consulting, primarily in the defense and aerospace industries. Lockheed wanted to reassess its decision to divest consulting, given the high growth rates expected in this business, particularly in cybersecurity consulting. On the other hand, if Lockheed decided to maintain its hardware focus, it wanted to expand its offerings. In addition to a strategy analysis, two possible target firms can be analyzed: Fortinet and Maxar.

Complexity Academic Level

This case raises a broad set of issues related to the evaluation of M&A transactions across two different industries and corporate strategy, as it relates to strategic fit of the potential targets and LM’s current capabilities. It is appropriate for the core course in strategy at the MBA or senior undergraduate level. It can also be assigned to specialized courses in Mergers and Acquisitions. It is not appropriate for a lower level strategy or finance course, as it requires students to have prior knowledge of basic finance valuation techniques.

Details

The CASE Journal, vol. 17 no. 4
Type: Case Study
ISSN:

Keywords

Article
Publication date: 11 November 2019

Stefanie Ruel, Albert J. Mills and Jean Helms Mills

The authors focus on “writing women into ‘history’” in this study, embracing the notion of cisgender and ethnicity in relation to the “historic turn”. As such, the authors bring…

Abstract

Purpose

The authors focus on “writing women into ‘history’” in this study, embracing the notion of cisgender and ethnicity in relation to the “historic turn”. As such, the authors bring forward the stories of the US Pan American Airway’s Guided Missile Range Division (GMRD) and the White women who worked there. The authors ask what has a Cold War US missile division to tell us about present and future gendered relationships in the North American space industry.

Design/methodology/approach

The authors apply Foucault’s technology of lamination, a form of critical discourse analysis, to both narrative texts and photographic images in the GMRD’s in-house newsletter, the Clipper, dating from 1964 until the end of 1967. They meld an autoethnography to this technique, providing space for the first author to share her experiences within the contemporary space industry in relation to the GMRD White women experiences.

Findings

The authors surface, in applying this combined methodology, a story about a White women’s historical, present and future cisgender social reality in the North American space industry. They are contributing then to a multi-voiced, cisgender/ethnic “historic turn” that, to date, is focused on White men alone in the US race to the moon.

Social implications

The social implication of this study lies in challenging perceptions of the masculinist-gendering of the past by bringing forward tales of, and by, women. This study also brings a White woman’s voice forward, within a contemporary North American space industry organization.

Originality/value

The authors are making a three-fold contribution to this special issue, and to an understandings of gendered/ethnic multi-voiced histories. The authors untangle the mid-Cold War phase from the essentialized Cold War era. They recreate multi-voiced histories of White women within the North American space industry while adding an important contemporary voice. They also present a novel methodology that combines the technology of lamination with autoethnography, to provide a gateway to recognizing the impact of multi-voiced histories onto contemporary and future gendered/ethnic relationships.

Details

Journal of Management History, vol. 25 no. 4
Type: Research Article
ISSN: 1751-1348

Keywords

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