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  4. Advancements in Aircraft Engine Inspection: A MEMS-Based 3D Measuring Borescope
 
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2025
Journal Article
Title

Advancements in Aircraft Engine Inspection: A MEMS-Based 3D Measuring Borescope

Abstract
Aircraft engines are regularly inspected with borescopes to detect faults at an early stage and maintain airworthiness. A critical part of this inspection process is accurately measuring any detected damage to determine whether it exceeds allowable limits. Current state-of-the-art borescope measurement techniques—primarily stereo camera systems and pattern projection—face significant challenges when engines lack sufficient surface features or when illumination is inadequate for reliable stereo matching. MEMS-based 3D scanners address these issues by focusing laser light onto a small spot, reducing dependency on surface texture and improving illumination. However, miniaturized MEMS-based scanner borescopes that can pass through standard engine inspection ports are not yet available. This work examines the essential steps to downsize MEMS 3D scanners for direct integration into borescope inspections, thereby enhancing the accuracy and reliability of aircraft engine fault detection.
Author(s)
Gail, Jonathan
Justus-Liebig-Universität Gießen
Kruse, Felix
Hamburg University of Technology
Gu-Stoppel, Shanshan  
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Schmedemann, Ole
Hamburg University of Technology
Leder, Günther
Leder Elektronik Design GmbH
Reinert, Wolfgang  
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Wysocki, Lena
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Burmeister, Nils
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Ratzmann, Lars
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Giese, Thorsten  
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Schütt, Patrick
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Piechotta, Gundula  
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Schüppstuhl, Thorsten
Hamburg University of Technology
Journal
Aerospace  
Open Access
DOI
10.3390/aerospace12050419
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Siliziumtechnologie ISIT  
Keyword(s)
  • 3D measurement

  • aero engine

  • aircraft engine inspection

  • borescope

  • LiDAR

  • MEMS mirror

  • MEMS scanner

  • non-destructive testing (NDT)

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