0
research-article

Classification and Modeling of Fluid Dynamic Loss in Aeroengine Transmission Gears

[+] Author and Article Information
Hidenori Arisawa

ASME Member, Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
arisawa_h@khi.co.jp

Yuji Shinoda

Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
shinoda_yuuji@khi.co.jp

Mitsuaki Tanaka

Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
tanaka_mitsuaki@khi.co.jp

Tatsuhiko Goi

Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
goi_t@khi.co.jp

Hirofumi Akahori

Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
akahori_h@khi.co.jp

Mamoru Yoshitomi

Kawasaki Heavy Industries, LTD., 1-1, Kawasaki-cho, Akashi city, 673-8666 Japan
yoshitomi_m@khi.co.jp

1Corresponding author.

ASME doi:10.1115/1.4042509 History: Received October 22, 2018; Revised January 11, 2019

Abstract

Reducing the fluid dynamic power loss for increasing speed is critical for the development of highly efficient high-speed aircraft engine gearing. In this study, the fluid dynamic loss was experimentally performed using a precise friction loss management technique along a vacuum pump in the gearbox. The experimental fluid dynamic loss could be classified as either "oil jet acceleration loss and oil reacceleration loss based on the conservation law of momentum for a point mass" or "oil churning loss and windage loss based on the conservation law of momentum for an incompressible continuum." Windage loss and oil dynamic loss (i.e., the summation of oil jet acceleration loss, oil reacceleration loss, and oil churning loss) were modeled to develop equations for a loss prediction. The equations of the windage loss are pressure loss of flow passing through the side clearance of the gears and energy loss caused by the vortex generation in the cavity between tooth valleys Oil dynamic loss was determined by multiplying the oil jet acceleration loss by an empirical coefficient. The results of the loss prediction equations agree with the experimental results, demonstrating the validity of the proposed model of the fluid dynamic loss.

Copyright (c) 2019 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In