Air combat training – high energy at lowest cost

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Georges Bridel ◽  
Zdobyslaw Jan Goraj ◽  
Łukasz Kiszkowiak ◽  
Jean-Georges Brévot ◽  
Jean Pierre Devaux ◽  
...  

Purpose The purpose of this paper is to reduce the exploitation cost below the standard supersonic training aircraft. The idea will benefit from the latest aerodynamic software and modern avionics, allowing to use much lighter trainer (due to using composite materials and minimizing on board avionic systems), and hence, decreasing the fuel consumption and cost of operation. The need to reform advanced jet training also covers the “red air” missions (manned targets for exercise and training). Red air missions need dedicated more realistic and less costly platforms. However, this makes sense only if the performance of these platforms is comparable to a front-line combat aircraft, particularly in terms of high specific excess power (SEP) and high levels of agility. Failure to address this issue would lead to unrealistic training scenarios and a negative training experience. Design/methodology/approach The paper focuses on required research and the feasibility studies of a low-cost operationally effective solution for air combat pilot training, combining a very agile air platform, fully dedicated to training, and a flexible, interoperable, integrated training system (ITS) using simulations to provide a complete Live Virtual Constructive (LVC) solution. This study will explore innovations applicable to the learning and maintaining of skills, develop a first pilot physiological survey and propose a follow-up program aimed at developing a fully European air combat training service by 2028 or beyond. Findings The volume inside the SEP envelope shows the available SEP potential depending on Mach number and Altitude: SEP is directly representative for climb rate and acceleration or a combination of both. The surface of the volume represents steady-state conditions, i.e. at 1 g (no turns), enabling us to conclude that supersonic trainer and fighter present high energy potentials (SEP) required in air combat manoeuvres and that a subsonic trainer cannot match those qualities and does not fulfil advanced trainer requirements. Practical implications A major difficulty for the air forces in their training syllabus lies in the fact that in peacetime supersonic flight is restricted to dedicated areas or over the sea. However, a real beyond visual range fight can often start in the supersonic and continue into the high subsonic regime after a few minutes. Therefore, this novel trainer superior performance in the transonic region will bring the following advantages, for example in the rare opportunities to train in the lower supersonic regime, it can provide similar performance like combat aircraft and in the usual advanced training in the high subsonic regime, this novel trainer offers excellent realistic performance in a region where the conventional advanced trainer performance collapses beyond Mach 0.8 and does not provide realistic training results. The feasibility study shall be executed in close cooperation between User (Requirements) and Study Team (Solutions). The early conceptual design with basic layout and data (T/W and W/L) is key for operational utility and must be addressed with the User right at the beginning. The users are therefore offered early participation in the requirements development. Originality/value The presented methodology is an original approach to the combat pilot training. The core of the methodology is a study of a solution that aims to reduce training costs through an affordable operational air vehicle and an agile ITS. This goal will be reached by a design methodology that will concentrate the innovation and the developments to the critical issues for the concept (aerodynamics, propulsion, simulated weapon system, ITS architecture, etc.): the remaining topics will be adapted from existing solution, optimizing the development.

2019 ◽  
Vol 2019 (4) ◽  
pp. 7-22
Author(s):  
Georges Bridel ◽  
Zdobyslaw Goraj ◽  
Lukasz Kiszkowiak ◽  
Jean-Georges Brévot ◽  
Jean-Pierre Devaux ◽  
...  

Abstract Advanced jet training still relies on old concepts and solutions that are no longer efficient when considering the current and forthcoming changes in air combat. The cost of those old solutions to develop and maintain combat pilot skills are important, adding even more constraints to the training limitations. The requirement of having a trainer aircraft able to perform also light combat aircraft operational mission is adding unnecessary complexity and cost without any real operational advantages to air combat mission training. Thanks to emerging technologies, the JANUS project will study the feasibility of a brand-new concept of agile manoeuvrable training aircraft and an integrated training system, able to provide a live, virtual and constructive environment. The JANUS concept is based on a lightweight, low-cost, high energy aircraft associated to a ground based Integrated Training System providing simulated and emulated signals, simulated and real opponents, combined with real-time feedback on pilot’s physiological characteristics: traditionally embedded sensors are replaced with emulated signals, simulated opponents are proposed to the pilot, enabling out of sight engagement. JANUS is also providing new cost effective and more realistic solutions for “Red air aircraft” missions, organised in so-called “Aggressor Squadrons”.


2014 ◽  
Vol 42 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Saul Berman ◽  
Peter Korsten

Purpose – Leaders are recognizing that the current connected era is fundamentally changing how customers, employees and partners engage, according to an IBM survey of CEOs and senior public sector leaders from around the globe. Design/methodology/approach – Between September 2011 and January 2012, IBM leaders met face to face with leaders worldwide to better understand their future plans and challenges in an increasingly connected economy. The CEOs surveyed lead organizations of different sizes in 64 countries and 18 industries The analysis also sought to understand differences between responses of CEOs in financially outperforming organizations and those in underperforming organizations. Findings – Key survey findings include: CEOs are creating more open and collaborative cultures – encouraging employees to connect, learn from each other and thrive in a world of rapid change; the emphasis on openness and collaboration is even higher among outperforming organizations; to engage customers as individuals, CEOs are investing in customer insights more than any other functional area; and extensive partnering is providing the edge CEOs need to take on radical innovation. Practical implications – Three suggested initiatives to promote superior performance are: embrace connectivity and openness; engage customers as individuals; and amplify innovation with partnerships. Originality/value – Explains that to create greater value, CEOs must take advantage of newly enabled connections with and among employees, customers and partners. Shows that to lead in this unfamiliar territory amid constant change, CEOs will need to learn from their own networks. They will need to assemble those networks like portfolios – with generational, geographic, institutional diversity. Then, they will need to help their organizations do the same.


2017 ◽  
Vol 44 (1) ◽  
pp. 257-266
Author(s):  
Wladyslaw Melnarowicz

Abstract The article presents the description of the current systems of training military aircraft pilots. Particular attention has been paid to the trends of change aimed at reducing the cost of purchasing school aircraft and the burden on the entire training and aircraft operation system. Over the past 3 years, the annual Pilot Training Conference in London has dominated the issue of increasing the effectiveness of training pilots of combat aircraft and unmanned aerial vehicle operators. The results of training experiments were presented on this conference, which presented the abandonment of intermediate airplanes training process of military pilots. The results of different researches allowed to state, that on a well-designed school airplane, such as the Pilatus PC-21, one can train both basic and advanced trainings and then train pilots directly to the combat aircraft. Of course, all this training process should be intensively supported by the modern mission simulator of the 5th generation. This allows the thesis to be a future, innovative training system that significantly reduces the training costs of a combat aircraft pilot without affecting the quality of the training.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ángel León ◽  
Trino-Manuel Ñíguez

PurposeThe authors apply their method to analyze which portfolios are capable of providing superior performance to those based on the Sharpe ratio (SR).Design/methodology/approachIn this paper the authors illustrate the use of conditional copulas for identifying differences in alternative portfolio performance strategies. The authors analyze which portfolios are capable of providing superior performance to those based on the SR.FindingsThe results show that under the Gaussian copula, both expected tail ratio (ETR) and skewness-kurtosis ratio portfolios exhibit remarkably low correlations respecting the SR portfolio. This means that these two portfolios are different respecting the SR one. The authors also find that copulas which focus on either the upper tail (Gumbel) or the lower tail (Clayton) render significant differences. In short, the copula analysis is useful to understand what kind of equity-screening strategy based on its corresponding performance measure (PM) performs better in relation to the SR portfolio.Practical implicationsCopula methods for evaluating relative tail forecasting performance provide an alternative tool when forecast differences are very small or found non statistically significant through standard tests.Originality/valueOur copula methods to evaluate models' performance differences are significant because when models' performance is rather similar, conclusions on statistical differences, can be defective as they may hinge on the subsample type or size used, leading to inefficient investment decisions. Our method based in copula is novel in this research topic.


2017 ◽  
Vol 117 (1) ◽  
pp. 198-212 ◽  
Author(s):  
Bo Zou ◽  
Feng Guo ◽  
Michael Song

Purpose Although the extant innovation literature has extensively explored the attributes of different types of innovation capability, little is known yet about the common phenomenon of the rebound and durableness of innovation capability. Therefore, the purpose of this paper is to address these aspects by introducing the concepts of elastic and plastic innovation capability. Design/methodology/approach Based on the behavioral theory of the firm, the authors propose a theoretical model to study the antecedents and outcomes of elastic and plastic innovation capability. An empirical testing involves two data sets that contained 183 companies in three industries. The empirical evidence supports the existence of the concepts of elastic and plastic innovation capability. Findings The research findings also demonstrate that a firm’s past performance is positively related to elastic innovation capability. Elastic innovation capability and organizational aspiration are positively related to plastic innovation capability. Both elastic and plastic innovation capability significantly lead to superior performance. Originality/value This study makes three main contributions to the existing innovation literature. First, the authors extend existing knowledge on innovation capability by proposing two new types of innovation capability – elastic and plastic innovation capability. Second, the proposed concepts of elastic and plastic innovation capability contribute to the theory of dynamic capability. Finally, this study reveals the micro-mechanism of elastic and plastic innovation capability from the perspective of the behavior theory of the firm and their different effect on firm performance.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nitin Pangarkar ◽  
Natasha Pangarkar

Purpose This study aims to propose a framework to help firms craft value-creating strategies for multiple stakeholders. Design/methodology/approach The study uses an inductive methodology based on analysing strategies for two exemplar companies, namely, Starbucks and Wagestream. Key insights about how value creation by these companies for multiple stakeholders led to their superior performance, as well as generalizable lessons from the exemplar companies, were identified. Findings The study finds that the performance of the two exemplar companies can be explained effectively through the framework. Research limitations/implications The framework proposed in the study requires a large amount of data about the value created for different stakeholders. Because the framework is comprehensive, managers need to aggregate different dimensions and varied data which can lead to manipulation or misuse by self-serving managers who wish to make their own strategies or performance look good. Practical implications The study identified specific actionable ideas that organizations can undertake to enhance the value they create for their various stakeholders. Originality/value The study is the first to develop an actionable framework that can be used by companies to craft strategies based on creating or enhancing stakeholder value. The framework is flexible with regard to application in different country, industry or organizational contexts.


2018 ◽  
Vol 44 (8) ◽  
pp. 992-1011
Author(s):  
Ajay Bhootra

Purpose The purpose of this paper is to examine the combined performance of momentum and a gross profitability-based strategy. The motivation stems from the strong performance of momentum on the short side and profitability on the long side, suggesting a potentially superior combined strategy. Gross profitability is also a measure of firm quality, so that another motivation is to contribute to a growing literature on factor-based investing that includes momentum and quality as potential factors. Design/methodology/approach The empirical approach employed in the paper is standard in the asset pricing literature. The firms are sorted into portfolios based on profitability and momentum, and the combined performance is studied through independent double sorting. Both value-weighted and equally weighted returns are reported in case of key empirical results. Findings The combined strategy results in superior performance. Specifically, the strategy produces results 2.75 greater than the momentum strategy, and about four times as high as the profitability strategy. The strategy also has much higher Sharpe ratio that improves further when combined with size and value strategies. Research limitations/implications The research has significant implications for academics and practitioners alike. A new investment strategy that has not been explored in the literature is presented. The superior performance of the strategy presents a challenge for the market efficiency, and would be of interest to academics and practitioners working in the area of investment management. Practical implications There has been a growing interest in multi-factor investing in recent years. The paper documents that superior performance is achieved by combining two of the popular factors, namely profitability and momentum. Originality/value The research is the first to study the combined performance of profitability and momentum, and provide evidence on the superiority of the combined strategy.


2020 ◽  
Vol 92 (4) ◽  
pp. 541-549
Author(s):  
Vehbi Emrah Atasoy ◽  
Selcuk Ekici

Purpose The purpose of this paper is to introduce an approach to evaluate the establishment requirements of an flight training organization (FTO) through indicators that are not included in the regulations from the viewpoint of “acquired indicators from FTO experience” (AIs-FTOE). Design/methodology/approach Although the establishment requirements of an FTO can be determined through regulations, it was realized that the pilot training process can be achieved in a safe, sustainable and economical manner through indicators that are not included in the regulations. These indicators were obtained through experience in the operation process of the FTOs. In this study, the indicators (obtained from the regulations and experiences) affecting the efficiency of FTOs, that were or would be operational, were determined, and the effects of the indicators on the organization were examined and presented in detail. The case study was carried out in the Department of Flight Training (ETU-P) of Eskişehir Technical University which has an FTO. Findings In accordance with the results, the necessity indicators were defined, and the indicators that were not included in the regulations were called as AIs-FTOE. Identified AIs-FTOEs were classified into three main headings: natural and artificial obstacles, meteorological conditions and physical and technological resources. Detailed indicator data results were presented after examinations. Practical implications When literature on FTOs was examined, it was seen that there is a need to identify and classify indicators that affect the efficiency of FTOs. To the authors’ knowledge, this study will be the first in the literature that presented information based on an active FTO in detail. Thus, the AIs-FTOEs identified in this study will serve as a roadmap for the FTOs to be established and are to be used as parameters to evaluate efficiency for the established ones. Originality/value To the best of authors’ knowledge, this paper will be the first paper in the literature describing the indicators that can be evaluated in terms of efficiency, sustainability and economy of FTOs.


2016 ◽  
Vol 27 (4) ◽  
pp. 483-501
Author(s):  
Christopher Rose ◽  
Jenny Coenen

Purpose – The purpose of this paper is to present a method for generating a set of feasible, optimized production schedules for the erection process of compact shipyards building complex ship types. Design/methodology/approach – A bi-objective mathematical model is developed based on the process constraints. A Pareto front of possible erection schedules is created using a the Non-dominated Sorting Genetic Algorithm II with a custom heuristic fitness function and constraint violation. Findings – It was possible to consistently generate a wide variety of production schedules with superior performance to those manually created by shipyard planner in negligible computational time. Practical implications – The set of optimized production schedules generated by the developed methodology can be used as a starting point by existing shipyard planners when drafting the initial erection planning for a new project. This allows the planners to consider wider variety of options in less time. Originality/value – No other published approach for the automatic generation of optimized production schedules of the erection process is specifically tailored to the construction of complex ships.


Author(s):  
Tai D. Nguyen ◽  
Ronald Gronsky ◽  
Jeffrey B. Kortright

Nanometer period Ru/C multilayers are one of the prime candidates for normal incident reflecting mirrors at wavelengths < 10 nm. Superior performance, which requires uniform layers and smooth interfaces, and high stability of the layered structure under thermal loadings are some of the demands in practical applications. Previous studies however show that the Ru layers in the 2 nm period Ru/C multilayer agglomerate upon moderate annealing, and the layered structure is no longer retained. This agglomeration and crystallization of the Ru layers upon annealing to form almost spherical crystallites is a result of the reduction of surface or interfacial energy from die amorphous high energy non-equilibrium state of the as-prepared sample dirough diffusive arrangements of the atoms. Proposed models for mechanism of thin film agglomeration include one analogous to Rayleigh instability, and grain boundary grooving in polycrystalline films. These models however are not necessarily appropriate to explain for the agglomeration in the sub-nanometer amorphous Ru layers in Ru/C multilayers. The Ru-C phase diagram shows a wide miscible gap, which indicates the preference of phase separation between these two materials and provides an additional driving force for agglomeration. In this paper, we study the evolution of the microstructures and layered structure via in-situ Transmission Electron Microscopy (TEM), and attempt to determine the order of occurence of agglomeration and crystallization in the Ru layers by observing the diffraction patterns.


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