On improving the training of aircraft engineers

2021 ◽  
Vol 20 (5) ◽  
pp. 865-885
Author(s):  
Leonid B. SOBOLEV
Keyword(s):  
Aviation Industry ◽  
Information Protection ◽  
Global Trends ◽  
Space Industry ◽  
The Poor ◽  
Military Aviation ◽  
And Performance ◽  
Performance Results ◽  
The Military ◽  
The U.S

Subject. The article continues the discussion about the method of training aircraft engineers to work in the military and civil segments of aviation and rocket-and-space industry. Objectives. The purpose is to improve the training of Russian engineers to work in the competitive market environment, on the basis of the analysis of experience in training the aviation engineers in leading foreign technical universities. Methods. The study rests on the comparative analysis of implementation of major projects in the military and civil segments of aviation in the U.S. and Russia, as well as programs for training aircraft engineers in both countries. Results. The analysis shows that the duration of modern large military aviation projects in both countries is the same (the comparison of cost is impossible, due to information protection in Russia), while in the civil segment of the aviation industry, Russia's lagging behind is significant both in terms of the duration of projects and performance results. One of the reasons is in the poor training of aircraft engineers to work in the competitive environment. Conclusions. It is crucial to reform Russian aviation universities in terms of conformity to global trends in multidisciplinarity and differentiation of financing and research base.

Assessing Alternative Fuels for Helicopter Operation

2012 ◽  
Author(s):  
A. Alexiou ◽  
A. Tsalavoutas ◽  
B. Pons ◽  
N. Aretakis ◽  
I. Roumeliotis ◽  
...  
Keyword(s):  
Crude Oil ◽  
Alternative Fuels ◽  
Substantial Reduction ◽  
Environmental Benefits ◽  
Aviation Fuel ◽  
Aviation Industry ◽  
Fuel Price ◽  
And Performance ◽  
Turboshaft Engine ◽  
Performance Results

At present, nearly 100% of aviation fuel is derived from petroleum using conventional and well known refining technology. However, the fluctuations of the fuel price and the vulnerability of crude oil sources have increased the interest of aviation industry in alternate energy sources. The motivation of this interest is actually twofold: firstly alternative fuels will help to stabilize price fluctuations by relieving the world wide demand for conventional fuel. Secondly alternative fuels could provide environmental benefits including a substantial reduction of emitted CO2 over the fuel life cycle. Thus, the ideal alternative fuel will fulfil both requirements: relieve the demand for fuels derived from crude oil and significantly reduce CO2 emissions. In the present paper, the effects of various alternative fuels on the operation of a medium transport/utility helicopter are investigated using performance models of the helicopter and its associated turboshaft engine. These models are developed in an object-oriented simulation environment that allows a direct mechanical connection to be established between them in order to create an integrated model. Considering the case of a typical mission for the specific helicopter/engine combination, a comparative evaluation of conventional and alternative fuels is then carried out and performance results are presented at both engine and helicopter level.

Evaluation and prioritization of technical and operational airworthiness factors for flight safety

2020 ◽  
Vol 92 (7) ◽  
pp. 1049-1061
Author(s):  
Mehmet Burak Şenol
Keyword(s):  
Aircraft Design ◽  
Civil Aviation ◽  
Aviation Industry ◽  
Flight Safety ◽  
Military Aircraft ◽  
Content Type ◽  
Military Aviation ◽  
Safety Programs ◽  
Aviation Operations ◽  
The Military

Purpose In this study, a multi-criteria decision-making (MCDM) approach for evaluating airworthiness factors were presented. The purpose of this study is to develop an acceptable rationale for operational activities in civil and military aviation and for design, production and maintenance activities in the aviation industry that can be used in-flight safety programs and evaluations. Design/methodology/approach In aviation, while the initial and continuing airworthiness of aircraft is related to technical airworthiness, identifying and minimizing risks for avoiding losses and damages are related to operational airworthiness. Thus, the airworthiness factors in civil and military aviation were evaluated under these two categories as the technical and operational airworthiness factors by the analytic hierarchy process and analytic network process. Three technical and five operational airworthiness criteria for civil aviation, three technical and nine operational airworthiness criteria for military aviation were defined, evaluated, prioritized and compared in terms of flight safety. Findings The most important technical factor is the “airworthiness status of the aircraft” both in civil (81.9%) and military (77.6%) aviation, which means that aircraft should initially be designed for safety. The most significant operational factors are the “air traffic control system” in civil (30.9%) and “threat” in the military (26.6%) aviation. The differences within factor weights may stem from the design requirements and acceptable safety levels (frequency of occurrences 1 in 107 in military and 1 in 109 in civil aircraft design) of civil and military aircraft with the mission achievement requirements in civil and military aviation operations. The damage acceptance criteria for civil and military aircraft are different. The operation risks are accepted in the military and acceptance of specific tasks and the risk levels can vary with aircraft purpose and type. Practical implications This study provides an acceptable rationale for safety programs and evaluations in aviation activities. The results of this study can be used in real-world airworthiness applications and safety management by the aviation industry and furthermore, critical factor weights should be considered both in civil and military aviation operations and flights. The safety levels of airlines with respect to our airworthiness factor weights or the safety level of military operations can be computed. Originality/value This is the first study considering technical and operational airworthiness factors as an MCDM problem. Originality and value of this paper are defining critical airworthiness factors for civil and military aviation, ranking these factors, revealing the most important ones and using MCDM methods for the evaluations of airworthiness factors for the first time. In civil aviation flight safety is the basic tenet of airworthiness activities in risk analysis, on the other hand in military aviation high levels of risks are to be avoided in peace training or operational tasks. However, even high risks have to be accepted during the war, if the operational requirements impose, as mission achievement is vital. The paper is one of a kind on airworthiness evaluations for flight safety.

Assessing Alternative Fuels for Helicopter Operation

2012 ◽  
Vol 134 (11) ◽  
Author(s):  
A. Alexiou ◽  
A. Tsalavoutas ◽  
B. Pons ◽  
N. Aretakis ◽  
I. Roumeliotis ◽  
...  
Keyword(s):  
Crude Oil ◽  
Alternative Fuels ◽  
Substantial Reduction ◽  
Environmental Benefits ◽  
Aviation Fuel ◽  
Aviation Industry ◽  
Fuel Price ◽  
And Performance ◽  
Turboshaft Engine ◽  
Performance Results

At present, nearly 100% of aviation fuel is derived from petroleum using conventional and well known refining technology. However, the fluctuations of the fuel price and the vulnerability of crude oil sources have increased the interest of the aviation industry in alternate energy sources. The motivation of this interest is actually twofold: firstly, alternative fuels will help to stabilize price fluctuations by relieving the worldwide demand for conventional fuel. Secondly, alternative fuels could provide environmental benefits including a substantial reduction of emitted CO2 over the fuel life cycle. Thus, the ideal alternative fuel will fulfill both requirements: relieve the demand for fuels derived from crude oil and significantly reduce CO2 emissions. In the present paper, the effects of various alternative fuels on the operation of a medium transport/utility helicopter are investigated using performance models of the helicopter and its associated turboshaft engine. These models are developed in an object-oriented simulation environment that allows a direct mechanical connection to be established between them in order to create an integrated model. Considering the case of a typical mission for the specific helicopter/engine combination, a comparative evaluation of conventional and alternative fuels is then carried out and performance results are presented at both engine and helicopter levels.

The Medical Guesswork Problem

2020 ◽  
pp. 21-36
Author(s):  
Eric M. Patashnik ◽  
Alan S. Gerber ◽  
Conor M. Dowling
Keyword(s):  
High Performance ◽  
Clinical Decision Making ◽  
Clinical Decision ◽  
Medical Evidence ◽  
Marginalized Groups ◽  
The Poor ◽  
Treat Prostate Cancer ◽  
Performance System ◽  
And Performance ◽  
The U.S

This chapter defines the “medical guesswork” problem and explains how the poor integration of evidence into clinical decision making harms the performance of the health care sector. The lack of an effective and politically sustainable response to the medical evidence problem—and this is a sad indictment of the U.S. political system—would be somewhat less surprising if the medical evidence problem harmed “only” politically marginalized groups, such as the poor. But all Americans, including wealthy patients covered by generous insurance plans, suffer if doctors do not follow best practices or if evidence does not exist about, for example, the best way to treat prostate cancer or back pain. The pathologies of the U.S. medical system thus cannot be attributed to distributional bias in an otherwise high-performance system. These inefficiencies and performance breakdowns are widespread and systemic.

scholarly journals The efficiency of using a tailored inventory management system in the military aviation industry

Heliyon ◽  
2020 ◽  
Vol 6 (7) ◽  
pp. e04424
Author(s):  
Hesham Al-Momani ◽  
Osama T. Al Meanazel ◽  
Ehsan Kwaldeh ◽  
Abdallah Alaween ◽  
Atif Khasaleh ◽  
...  
Keyword(s):  
Inventory Management ◽  
Management System ◽  
Aviation Industry ◽  
Inventory Management System ◽  
Military Aviation ◽  
The Military

The Contribution of Maritime Economics to the Revitalization of the U.S. Marine Industry

1996 ◽  
Vol 33 (01) ◽  
pp. 1-10
Author(s):  
Jennifer J. Zeien ◽  
J. F. Hillmann
Keyword(s):  
The United States ◽  
Maritime Industry ◽  
Transportation Economics ◽  
Marine Industry ◽  
History Of ◽  
And Performance ◽  
The Military ◽  
The Impact ◽  
The U.S

A thorough understanding of the role of economics in the various sectors of the maritime industry is vital to success in increasingly global markets. In this paper, the authors discuss the importance of economics in the maritime industry and the consequences of ignoring the effect of economic factors. The authors explore the effect that economics has on the industry's organization, including its structure, behavior, and performance. They examine the relationship between maritime economics and transportation economics, and explore implications of modeling the demand for shipping and shipbuilding services as a derivative of the demand for international trade and commerce. In this regard, the authors present the U.S. maritime industry and chart significant milestones in its development. This factors into a discussion of the impact of the globalization of commercial shipping. The authors also consider the history of government involvement and the military role of the maritime industry. The central thesis of this discussion is that the markets for ships and shipping are becoming increasingly more competitive, and less susceptible to outside constraint. The authors then illustrate their thesis by presenting case studies capturing the two main segments of the maritime industry: international shipping and international shipbuilding. The authors prescribe the need for a market-driven industry receiving minimal intervention by government. Finally, the authors discuss the role of SNAME's Panel 0–36, "Maritime Economics," in relation to the concerns of maritime economics that embrace far-reaching issues with significant application to shipping and shipbuilding in the United States.

The U.S. Air ForceWeather Agency’s mesoscale ensemble: scientific description and performance results

2011 ◽  
Vol 63 (3) ◽  
pp. 625-641 ◽  
Author(s):  
J. P. Hacker ◽  
S.-Y. Ha ◽  
C. Snyder ◽  
J. Berner ◽  
F. A. Eckel ◽  
...  
Keyword(s):  
And Performance ◽  
Performance Results ◽  
The U.S

The Relation Between Financial Incentives, Motivation, and Performance

2017 ◽  
Vol 16 (2) ◽  
pp. 61-76 ◽  
Author(s):  
Anaïs Thibault Landry ◽  
Marylène Gagné ◽  
Jacques Forest ◽  
Sylvie Guerrero ◽  
Michel Séguin ◽  
...  
Keyword(s):  
Financial Incentives ◽  
Work Performance ◽  
Autonomous Motivation ◽  
Compensation Plans ◽  
Work Settings ◽  
Path Analyses ◽  
Three Samples ◽  
And Performance ◽  
Performance Results

Abstract. To this day, researchers are debating the adequacy of using financial incentives to bolster performance in work settings. Our goal was to contribute to current understanding by considering the moderating role of distributive justice in the relation between financial incentives, motivation, and performance. Based on self-determination theory, we hypothesized that when bonuses are fairly distributed, using financial incentives makes employees feel more competent and autonomous, which in turn fosters greater autonomous motivation and lower controlled motivation, and better work performance. Results from path analyses in three samples supported our hypotheses, suggesting that the effect of financial incentives is contextual, and that compensation plans using financial incentives and bonuses can be effective when properly managed.

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