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Article
Publication date: 13 June 2018

Pawel Jan Glowacki

Currently, in many countries, aviation safety regulations allow piston engines exploitation above Time Between Overhaul (TBO) recommended by manufacturers. Upon fulfillment of…

Abstract

Purpose

Currently, in many countries, aviation safety regulations allow piston engines exploitation above Time Between Overhaul (TBO) recommended by manufacturers. Upon fulfillment of certain requirements, which are already included in the manufacturers’ documentation, TBO extension is granted. National Aviation Authority has approved exploitation of piston engines to something like quasi on-condition maintenance, which has no technical proof behind. This leads to the conclusion that the current, simple way of the engine’s life extension is not the best solution for maintaining flight safety. Aircraft piston engines TBO extension requires changes in the current exploitation system.

Design/methodology/approach

The paper provides methodology for aircraft piston engines on-condition exploitation based on engine flight parameters (from cruise and takeoff) and engine oil particles analysis. The paper describes a method of diagnostic limits for certain engine parameters and elements in the oil assignation assuming that they come under rules of normal distribution.

Findings

It has been found that piston engines installed on maximum takeoff mass <5,700 kg class aircraft are the second biggest contributor as a source of aviation events, thereby having a significant impact on aviation safety. Engine flight parameters and elements content in the oil meet Gaussian rules.

Practical implications

Introduction of the engine on-condition exploitation into operation practices reduces the operator’s engine direct maintenance cost and increases technical knowledge of the employees and has a positive impact on flight safety.

Originality/value

It is the first scientific description in Poland, which proposes an empirically proved methodology of the aviation piston engines on-condition exploitation.

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 7
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 8 March 2011

Leif Jarle Gressgård

Virtual teams, understood as teams with geographically dispersed members communicating primarily by use of information and communication technologies (ICT), have become a viable…

9466

Abstract

Purpose

Virtual teams, understood as teams with geographically dispersed members communicating primarily by use of information and communication technologies (ICT), have become a viable form for work in innovation projects involving one or several organizations. Knowledge development and creation of a shared understanding among team members are often stressed as fundamental to successful innovation processes. This paper aims to address how use of ICT in team collaboration impacts on the creation of a shared understanding and knowledge development within the teams, and how these factors are important for organizations' innovation capabilities.

Design/methodology/approach

Based on a review of the literature, the paper discusses how modern ICT may impact on the organization of innovative activities and organizations' innovation capabilities.

Findings

Several important factors related to the use of ICT in teams working on innovation projects are highlighted. A conceptual model and directions for future research based on a literature review are proposed.

Practical implications

Based on the discussion, a conceptual model is presented which highlights the need for well‐functioning computer‐mediated team interaction in order to realize the innovation potential of organizations.

Originality/value

The paper emphasizes the reciprocal significance of knowledge access and knowledge exploitation for organizations' innovation capabilities, and discusses how ICT impacts on both aspects.

Details

Team Performance Management: An International Journal, vol. 17 no. 1/2
Type: Research Article
ISSN: 1352-7592

Keywords

Article
Publication date: 19 March 2019

Bartosz Dziugiel

The purpose of this paper is to define reliability requirements to be imposed on electric engines to assure similar or higher value of mean time between failures (MTBF) for mixed…

Abstract

Purpose

The purpose of this paper is to define reliability requirements to be imposed on electric engines to assure similar or higher value of mean time between failures (MTBF) for mixed piston-electric propulsion configurations when compared to classic and unconventional piston engine configurations.

Design/methodology/approach

Reliability estimation was done using mathematical model of safety of light aircraft commercial operations. The model was developed on the basis of Federal Aviation Administration and National Transport Safety Board data. The analysis was conducted for numerous piston and electric configurations. It allowed comparison of selected solutions and definition of relation between electric engine MTBF and MTBF calculated for entire mixed piston-electric propulsion system.

Findings

It was found that, from reliability point of view, mixed piston-electric engine propulsion is attractive alternative for classic single- and twin-piston configuration. It would allow to at least doubling of MTBF for propulsion without increase of operational cost.

Practical implications

Rationale behind exploiting electric propulsion in aviation is provided. Relation between electric engine reliability and entire propulsion reliability was identified and defined. Minimum requirements concerning MTBF value for electric engine application in aviation was assessed. Conclusions from this study can be used for definition of requirements for new aircraft and by the regulatory authorities.

Originality/value

Originality consists in use of real accident statistics included in mathematical model of safety for assessment of MTBF for various classic and novel piston and piston-electric engine configurations of light aircraft. Output from the study can be exploited by the industry.

Details

Aircraft Engineering and Aerospace Technology, vol. 92 no. 3
Type: Research Article
ISSN: 1748-8842

Keywords

Content available
Article
Publication date: 13 November 2018

Professor Zdobyslaw Jan Goraj

Abstract

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 7
Type: Research Article
ISSN: 1748-8842

Article
Publication date: 1 May 1972

David Haworth

IT IS WRONG TO THINK the departments of the European Commission are staffed by fanatical devotees of centralization. The fact is that the disparities which still exist between the…

Abstract

IT IS WRONG TO THINK the departments of the European Commission are staffed by fanatical devotees of centralization. The fact is that the disparities which still exist between the laws of the various Community states constitute discrimination against medium‐sized firms, to the benefit of larger competitors.

Details

Industrial Management, vol. 72 no. 5
Type: Research Article
ISSN: 0007-6929

Article
Publication date: 3 August 2020

Audhesh K. Paswan, Francisco Guzmán and Zhi Pei

The fundamental question asked in this study is – should all firms engage in innovation and branding activities to the same extent to achieve their goals? The purpose of this…

Abstract

Purpose

The fundamental question asked in this study is – should all firms engage in innovation and branding activities to the same extent to achieve their goals? The purpose of this paper is to answer this question, a strategic typology that integrates branding and innovation (BI) from an organizational ambidexterity perspective is proposed.

Design/methodology/approach

This paper builds theory by proposing a typology. Integrating the literature on BI, organizational ambidexterity and resource/knowledge-based view of firms, this study posits that to create a value proposition, a firm could choose to engage in innovation and branding activities in a variety of ways depending on their dominant strategic orientation along two dimensions of ambidexterity.

Findings

The four proposed typical branding-innovation orientations are low innovation × low branding; low innovation × high branding; high innovation × low branding; and high innovation × high branding.

Practical implications

A firm should choose its dominant strategic orientation depending on conditions such as market, consumers, needs and demand and resources.

Originality/value

By framing the innovation-branding paradox within an organizational ambidexterity framework, the proposed typology helps integrate two complementary and yet conflicting organizational functions by shifting the focus from an operational to a strategic level.

Details

Journal of Product & Brand Management, vol. 30 no. 5
Type: Research Article
ISSN: 1061-0421

Keywords

Article
Publication date: 21 March 2022

Zhongjian Pan, Qinghua He and Jing Yang

High reliability and high power-to-weight ratio are the technical difficulties in the development of aviation piston heavy fuel engines. This paper aims to provide a design…

Abstract

Purpose

High reliability and high power-to-weight ratio are the technical difficulties in the development of aviation piston heavy fuel engines. This paper aims to provide a design evaluation method of the aero piston engine block, which can help R&D personnel quickly evaluate the performance of engine block, including effective bearing capacity and fatigue deformation, save a lot of experimental time and shorten the R&D cycle.

Design/methodology/approach

In this paper, structural efficiency is used to evaluate the reliability and durability of the engine block. Structural efficiency is a new evaluation method that lists its corresponding connotation according to different objects. In this paper, the function of the engine block in the engine is explained in detail, and three quantifiable connotations of the structural efficiency of the engine block are put forward. In the subsequent calculation, the calculation is carried out according to the three indexes, and the calculation results are used as the indexes to evaluate the performance of the engine block.

Findings

The structural efficiency evaluation method proposed in this paper can quickly and effectively evaluate the performance of the block from many aspects. Under the same boundary conditions, the two design schemes are simulated and analyzed, and the durability test is carried out. The analysis and experimental results show that Scheme 2 has good performance, which verifies the feasibility of the evaluation method.

Originality/value

This paper provides a method for rapid evaluation of engine block performance.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 8
Type: Research Article
ISSN: 1748-8842

Keywords

Book part
Publication date: 4 August 2014

Guktae Kim and Moon-Goo Huh

Despite the theoretical assumption that balancing exploration and exploitation is important for long-term performance and survival, previous studies have provided few insights…

Abstract

Despite the theoretical assumption that balancing exploration and exploitation is important for long-term performance and survival, previous studies have provided few insights into these relationships because they have focused mainly on the short-term financial performance of organizations. In addition, balancing exploration and exploitation is a critical challenge for small- and medium-sized enterprises (SMEs) that lack the resources, capabilities, and experience necessary to achieving ambidexterity. In this regards, this study empirically explores the relationship between the exploration–exploitation balance and SMEs’ longevity in order to address two important questions from the ambidexterity perspective: (1) How does the balance between exploration and exploitation influence organizational survival? (2) How is the appropriate balance between exploration and exploitation influenced by an organization’s internal and external contexts?

An analysis of 1981–2012 data from the Korean SMEs in IT industry reveals an inverted U-shaped curvilinear relationship between the extent of exploratory innovation and organizational longevity, providing support for the ambidexterity perspective. We further examine the moderating effects of financial slack and environmental dynamism on the relationship between exploratory innovation and organizational longevity. The results indicate that financial slack moderated the exploration–longevity relationship and call for a contingency approach for a better understanding of performance implications of the exploration–exploitation balance.

Details

Exploration and Exploitation in Early Stage Ventures and SMEs
Type: Book
ISBN: 978-1-78350-655-2

Keywords

Article
Publication date: 13 February 2017

Melih Madanoglu, Ilan Alon and Amir Shoham

Using munificence, real options and ambidexterity theories, the purpose of this paper is to demonstrate how the differential between home and host market environmental conditions…

5022

Abstract

Purpose

Using munificence, real options and ambidexterity theories, the purpose of this paper is to demonstrate how the differential between home and host market environmental conditions affects US international franchising expansion.

Design/methodology/approach

The authors used firm-level panel data for 151 US-based franchising firms, from Bond’s Guide for Franchise Opportunities, for the years 1994-2008 plus macroeconomic data on the environment, to explain the probability of franchising.

Findings

The paper finds that the differential in economic growth and economic uncertainty impacts franchisors’ desire to expand abroad on a continual basis.

Research limitations/implications

Researchers in international franchising should not only focus on host market environmental variables (pull factors), but also on conditions in the home market (push factors).

Originality/value

The paper adds to environmental explanations of international franchising by focusing on the differential in munificence and uncertainty between home and host countries.

Details

International Marketing Review, vol. 34 no. 1
Type: Research Article
ISSN: 0265-1335

Keywords

Article
Publication date: 12 December 2023

Samuel Dawa and Jonathan Marks

This paper aims to explain the occurrence of sustainable entrepreneurship in the underresearched sub-Saharan Africa context and to improve the understanding of how effectuation…

Abstract

Purpose

This paper aims to explain the occurrence of sustainable entrepreneurship in the underresearched sub-Saharan Africa context and to improve the understanding of how effectuation manifests in this context.

Design/methodology/approach

This study uses a qualitative research approach based on multiple case studies. Responses were sourced from owners, employees, suppliers, the community and customers of sustainable entrepreneurial firms. Data collection methods included in-depth interviews, document reviews and observations. The Gioia analytical approach was used.

Findings

Overall, the authors find the concept of effectuation to be well-suited to capturing the processes through which individuals with limited means seek to engage in sustainable entrepreneurship. The authors also identify three pervasive practices that are key to understanding effectuation in the developing country context: complementation of indigenous knowledge with modern science, compassion and pluriactivity.

Practical implications

This study underscores the importance of co-creation, diversification of revenue sources and the role of emotional awareness and interpersonal skills in entrepreneurial endeavors.

Originality/value

This study, therefore, contributes new knowledge about the mechanisms through which entrepreneurs faced with resource constraints use control as opposed to prediction strategies to exploit sustainable entrepreneurship opportunities. In so doing, this study contributes to entrepreneurship theory by proposing the integration of cognitive and affective dimensions in realizing sustainable entrepreneurship goals.

Details

Journal of Entrepreneurship in Emerging Economies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2053-4604

Keywords

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