The GTCP331, a 600 HP Auxiliary Power Unit Program PUBLIC ACCESS

[+] Author Affiliations
L. M. Stohlgren

Garrett Turbine Engine Company, Phoenix, AZ

Paper No. 83-GT-188, pp. V002T02A013; 12 pages
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7952-8
  • Copyright © 1983 by ASME


The Garrett GTCP331 series auxiliary power unit (APU) is currently entering airline service as a Category I -Essential APU with the Boeing and Airbus advanced transport aircraft. The GTCP331 APU serves as a secondary pneumatic and electrical power source for the aircraft systems, both on the ground and in-flight. As it enters airline service, the GTCP331 APU offers: sound design origin, advanced metallurgical technology, a rigorous test program background, state-of-the-art full authority digital electronic controls, and the application of acoustic attenuating techniques and materials. These facets combine to present user-airlines with a modern, high-technology APU that through lowered operating cost, and increased reliability and maintainability, meets the challenge of reduced cost of ownership.

Copyright © 1983 by ASME
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