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Design and Operational Development a Pneumatic Braking System for a Gas-Turbine Units Test Bench

[+] Author Affiliations
Valeriy Matveev, Yulia Novikova, Grigorii Popov, Oleg Baturin, Evgenii Goriachkin

Samara National Research University, Samara, Russia

Paper No. GT2017-64738, pp. V02BT41A050; 11 pages
doi:10.1115/GT2017-64738
From:
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 2B: Turbomachinery
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5079-4
  • Copyright © 2017 by ASME

abstract

Each gas turbine engine must be tested after it has been produced or repaired. If the engine is used to generate power on the output shaft, its power must be utilized during the test process. To do this, pneumatic brake system can be applied. It allows to measure and utilize the power generated by the engine by using this power to drive a single compressor connected through the clutch with the output shaft of the engine under test. The process of gas-dynamic designing of the pneumatic braking system for a modernized gas-turbine engine NK-36ST is described in detail in this paper. Computational model was created by using Numeca Fine / Turbo and was verified using the experimental data of the baseline compressor. Also, research efforts which are aimed at improving the efficiency of the pneumatic braking system and increasing its gasdynamic stability were conducted. In particular, guide vane was added and the contours of its flow channel were modified. Also the exhaust nozzle was designed for the pneumatic braking system to ensure its work at the required operating points.

Copyright © 2017 by ASME

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