Power Losses and Thermal Behavior in Aero Engine Gearboxes: High Speed meets Bevel Gear

Institute

Lehrstuhl für Maschinenelemente (TUM-ED)

Type

Semester Thesis / Master's Thesis /

Content

theoretical /  

Description

Motivation: 

In modern aero engines, power for safety-critical accessories can be extracted from the turbine shaft via a highly loaded bevel gear stage. The resulting circumferential speeds far exceed those of conventional industrial gearboxes, making accurate prediction of gear losses and thermal behavior a key challenge in engine design. However, existing analytical models are predominantly validated for moderate operating conditions and require systematic evaluation at high-speeds.

Objective:
The objective of this work is to evaluate existing analytical approaches for predicting gear power losses and thermal behavior of a bevel gear stage. To this end, an in-house bevel gear test rig will be modeled using the tool WTplus and the results validated against measurement data in the moderate speed range. Based on the validated model, operating parameters will be incrementally extended into the high-speed regime to identify dominant loss contributions and validity limits of the applied methods.

 

Requirements

Requirements: 

• Self-motivated and independent working style 

• Prior experience in programming

• Interest in thermodynamics and drivetrain engineering 

• Thesis can be written in German or English 

Possible start

sofort

Contact

Moritz Lengmüller, M.Sc.
moritz.lengmuellertum.de

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