Special Issue "Secondary Air Systems in Gas Turbine Engines"

A special issue of Aerospace (ISSN 2226-4310).

Deadline for manuscript submissions: 28 February 2018

Special Issue Editor

Guest Editor
Dr. Erinc Erdem

School of Engineering, University of Glasgow, Glasgow G12 8QQ, Scotland, UK; TUSAS Engine Industries (TEI), Esentepe Mah. Cevreyolu Bulvari no.356, Eskisehir, Turkey
Website | E-Mail
Interests: aerothermal analysis; turbomachinery; modelling and simulation; ground testing; measurement techniques; propulsion

Special Issue Information

Dear Colleagues,

Modern gas turbine engines are presently being pushed to the limits of thermal efficiency, owing to recent advancements in materials and cooling technologies. The hot section of a gas turbine engine works above the limits of material capabilities. Consequently, there is a high demand for cooling and sealing to assure safe and sound operation throughout the operational envelope of an engine. Secondary Air Systems (SAS) play a significant role in gas turbine engines to accomplish reliable operation of the individual modules as well as the whole engine. Main functions of SAS are to provide cooling flow to engine components, to seal bearing chambers (sumps) and to control bearing axial loads. Being a functional discipline, SAS owns the airflow that is essentially the primary flowpath.

Traditionally, the design of secondary air systems utilized industrial friendly “one-dimensional modeling” for both compressible internal rotating/non-rotating fluid flow and heat transfer. Many correlations were developed to model/compute the flows with reasonable accuracy, taking into account of heat pickups on the way in flow circuits. Testing is an integral part of the design process comprising of flow testing of components, module testing and whole engine testing; providing essential data to characterize specific flow elements and circuits.

This collection invites papers that address the areas of SAS in gas turbine engines encompassing aviation, power generation and industrial applications. Of interest are papers that address novel approaches in flow network modeling, contemporary modeling and experimental efforts in rotor-stator/ rotor-rotor cavities, windage measurements and predictions, advanced flow network modeling to include transient behaviors, advanced sealing technologies, axial load control strategies, rim sealing developments and sump pressurization aspects.

Dr. Erinc Erdem
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 papers will be 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 quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) is waived for well-prepared manuscripts submitted to this issue. 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.


  • Gas turbine engines
  • Secondary air systems
  • Gas turbine sealing technologies
  • One-dimensional flow network modeling
  • Rotor-stator/rotor-rotor cavities
  • Compressible internal flows
  • Heat transfer Gas turbine engine testing

Published Papers

This special issue is now open for submission.
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