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Aerospace
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Aero-Engine Manufacturing Technology
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Aero-Engine Manufacturing Technology

A special issue of Aerospace (ISSN 2226-4310). This special issue belongs to the section "Aeronautics".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 6177

Special Issue Editor

Dr. Michal Hovanec

E-Mail Website
Guest Editor
Faculty of Aeronautics, Technická Univerzita v Košiciach, Kosice, Slovakia
Interests: software planning; modelling and optimization in digital factories; safety; ergonomics; maintenance and safety; aviation and aerospace engineering; software engineering; material science; environment; modeling; manufacturing; systems simulation modeling; simulation software; optimization and control

Special Issue Information

Dear Colleagues,

This Special Issue focuses on the skills required for “Aero-engine Manufacturing Technology”, including modeling, analysis, and design methodologies. The articles will cover approaches and examples that can be applied to commercial aircraft, unmanned aerial vehicles, missiles, and spacecraft. design 4D flight guidance systems, optimize an aircraft's trajectory, optimize atmospheric reentry trajectories for space shuttles, and design flight controllers to drive aerospace vehicles along specified optimal trajectories Aircraft, launch vehicles, and spacecraft are all part of the aerospace industry. Their design and manufacture require a precise theoretical and experimental understanding of a wide range of events, as well as performance forecasts for a wide range of complex systems. Thanks to the use of computing hardware and advanced software libraries, optimization technology has become practical for the control of both aeronautical and space vehicles. Researchers are encouraged to publish their results in a broad range of topics, resulting from their recent theoretical and experimental developments. Topics of interest include software planning, modeling and optimization in digital factories with plant simulation tools (e.g., SW of the Siemens PLM portfolio); networked intelligent control systems for high-precision production and resource efficiency; wireless automation and logistics for rapid plant reconfiguration; integrated environments for modeling, simulation, presentation and virtual production; manufacturing technologies for miniaturized ICT systems and for systems interfaced with different types of materials and objects; simulation and automation capabilities; technologies and methods for the production of innovative aircraft with sophisticated maintenance (including repair and overhaul); as well as the cost-effective management of aircraft operations and airports. The length of the papers is not a constraint.

Dr. Michal Hovanec
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Aerospace is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

aero-engine manufacturing; aerospace engineering; manufacturing technologies; modeling and optimization; design engineering; aircraft operations; aircraft engine; aircraft maitenance

Published Papers (3 papers)

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Research

17 pages, 4277 KiB  
Article
A Tool for the Design of Turbomachinery Disks for an Aero-Engine Preliminary Design Framework
by Ioannis Kolias, Nikolaos Aretakis, Alexios Alexiou and Konstantinos Mathioudakis
Aerospace 2023, 10(5), 460; https://doi.org/10.3390/aerospace10050460 - 16 May 2023
Cited by 1 | Viewed by 1674
Abstract
Disks in gas turbines are optimized for minimum weight, while satisfying both geometry and stress constraints, in order to minimize the engine production, operation, and maintenance costs. In the present paper, a tool is described for the preliminary mechanical design of gas turbine [...] Read more.
Disks in gas turbines are optimized for minimum weight, while satisfying both geometry and stress constraints, in order to minimize the engine production, operation, and maintenance costs. In the present paper, a tool is described for the preliminary mechanical design of gas turbine disks. A novel formulation is presented, where the disk weight minimization is achieved by maximizing the stresses developed in the disk. The latter are expressed in the form of appropriately defined design and burst margins. The computational capabilities of the tool developed are demonstrated through comparisons to calculations with a higher fidelity tool. The importance of accurately calculating thermal stresses is demonstrated and the ability of the tool for such calculations is discussed. The potential and efficiency of the tool are illustrated through a proposed re-design of the disks of a well-documented ten-stage compressor. Finally, the integration of the tool into an overall engine design framework is discussed. Full article
(This article belongs to the Special Issue Aero-Engine Manufacturing Technology)
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14 pages, 3132 KiB  
Article
Investigation of the Dynamic Characteristics of a Two-Stage High-Speed On/Off Valve with Adjustable Maximum Opening
by Qiang Gao, Shida Zhang and Yong Zhu
Aerospace 2023, 10(2), 109; https://doi.org/10.3390/aerospace10020109 - 21 Jan 2023
Viewed by 1593
Abstract
The effective way to improve the reliability of the fuel metering system in an aero-engine is to use a high-speed on/off valve (HSV) instead of a servo valve as the pilot stage of the fuel metering valve. However, the dynamic performance of the [...] Read more.
The effective way to improve the reliability of the fuel metering system in an aero-engine is to use a high-speed on/off valve (HSV) instead of a servo valve as the pilot stage of the fuel metering valve. However, the dynamic performance of the fuel metering valve is easily affected by the HSV, so a novel two-stage high-speed on/off valve with adjustable maximum opening (AMOHSV) is proposed in which the maximum stroke of the main valve is regulated with an adjustable rod. Firstly, the structure and working principle of the proposed valve are presented. Then, an entire mathematical model is established and verified based on a multi-physical field coupling mechanism. Finally, simulations and experiments prove that when the maximum opening is 0.2 mm, the total opening time and total closing time of the AMOHSV are within 5 ms. In addition, an upward inflection point and a downward inflection point on the pressure curve of the control chamber can be used to identify the total opening time and total closing time, respectively. The research results also prove that the proposed structure solves the conflict between the maximum flow rate and the dynamic performance of the traditional HSV. Full article
(This article belongs to the Special Issue Aero-Engine Manufacturing Technology)
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25 pages, 23721 KiB  
Article
Aero-Engine Rotor Assembly Process Optimization Based on Improved Harris Hawk Algorithm
by Bin Zhang, Hongyi Lu, Shun Liu, Yucheng Yang and Doudou Sang
Aerospace 2023, 10(1), 28; https://doi.org/10.3390/aerospace10010028 - 28 Dec 2022
Cited by 4 | Viewed by 1522
Abstract
Multi-stage disc rotor assembly is an important part of the aero-engine rotor manufacturing process. To solve the problem that excessive unbalance of assembly affects the vibration of the whole machine, this paper presents an optimization method for aero-engine rotor assembly balance based on [...] Read more.
Multi-stage disc rotor assembly is an important part of the aero-engine rotor manufacturing process. To solve the problem that excessive unbalance of assembly affects the vibration of the whole machine, this paper presents an optimization method for aero-engine rotor assembly balance based on an improved Harris Hawk algorithm. Firstly, the assembly sequence model of the single-stage disc blade and the phase assembly model of a multi-stage disc of the engine rotor is established. Secondly, by using the initial population generation based on dynamic opposing learning and the escape energy function of the non-linear logarithmic convergence factor, the search mechanism of the whale optimization algorithm is introduced in the global exploration, and the adaptive weight strategy and mutation strategy of the genetic algorithm is introduced in the development to improve the algorithm. Then, the effectiveness of the algorithm is verified by experiments and compared with particle swarm optimization, genetic algorithm, and Harris Hawk algorithm, the unbalance of the optimal blade assembly sequence is reduced by 91.75%, 99.82%, and 83.39%, respectively. The algorithm comparison and analysis are carried out for all disc-blade assembly optimization of the rotor. The optimal unbalance of the improved Harris Hawk optimization algorithm is reduced by 79.71%, 99.48%, and 54.92% on average. The unbalance of the algorithm in this paper is the best. Finally, the improved Harris Hawk algorithm is used to find the best assembly phase, and the optimized unbalanced force and moment are reduced by 84.22% and 98.05%, respectively. The results of this study prove that the improved Harris Hawk algorithm for aero-engine rotor assembly balance optimization can effectively reduce the unbalance of rotor disc blade assembly and rotor unbalance and provide a powerful solution for solving engine vibration. Full article
(This article belongs to the Special Issue Aero-Engine Manufacturing Technology)
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