The Honeywell TPE331 (military designation: T76) is a turboprop engine. It was designed in the 1950s by Garrett AiResearch, and produced since 1999 by successor Honeywell Aerospace. The engine's power output ranges from 575 to 1,650 shaft horsepower (429 to 1,230 kW).[2][3][4]
Design and development
Garrett AiResearch designed the TPE331 from scratch in 1959 for the military.[5] “Designed as a 575-horsepower engine it was not a scaled-down version of a larger engine, as competitors were offering.”[6]The TPE331 originated in 1961 as a gas turbine (the "331") to power helicopters.[6] It first went into production in 1963.[7] More than 700 had been shipped by the end of 1973.[6] It was designed to be both a turboshaft (TSE331)[8] and a turboprop (TPE331), but the turboshaft version never went into production. The first engine was produced in 1963, installed on the Aero Commander in 1964 and put into production on the Aero Commander Turbo Commander in June 1965.[citation needed]
Performance
The 715 shp TPE331-6 used in the Beech King Air B100 have a 400-hr. fuel nozzle cleaning interval, 1,800-hr. hot section inspection interval and a 5,400-hr. time between overhaul; approval is possible for 3,000-hr. HSIs and 6,000-hr. overhauls and engine reserves are cheaper than for the PT6A.[9]
Variants
Military variants (T76)
T76-G-2
T76-G-4
T76-G-6
T76-G-8
T76-G-10
T76-G-12
T76-G-12A
T76-G-14
T76-G-16
T76-G-410
T76-G-411
T76-G-416
T76-G-417
T76-G-418
T76-G-419
T76-G-420
T76-G-421
Commercial variants (TPE331)
^Dates from FAA type certificates E4WE[10] (TPE331 model series 3, 5, 6, 8, 9, 10, 11, and 12) and E18NE[11] (series 14 and 15). No certification date information available from type certificates E3WE[12] (series 1 and 2) and E2WE[13] (series 25, 29, 43, 45, 47, 51, 55, 57, and 61).
^Renamed to TPF351-20 in early 1988.[19] Was the rear-fuselage powerplant for the Embraer/FMA CBA 123 Vector. Flown on a Boeing 720testbed aircraft and Vector prototype starting in July 1990. Development of the aircraft and engine suspended in 1992, when the engine was nine months from certification.[20]
^Brecken, Steve (July 2016). "Honeywell Continues to Hone Turboprop Engine for 50th Anniversary" (Press release). Phoenix, Arizona: Honeywell Aerospace. Archived from the original on 2019-07-04.
^"TPE331 Spec Chart". Honeywell Aerospace. Archived from the original (PDF) on 2014-09-03. Retrieved 2014-08-29.
^"TPE". Products & Services. Honeywell Aerospace. Archived from the original on 2010-09-08.
^"TPE331-14 Turboprop Engine" (PDF). Honeywell Aerospace. 2006-07-10. Archived from the original (PDF) on 2014-09-03. Retrieved 2014-08-29.
^"TPE331 Engines Offers Super Performance on Dornier 228 Aircraft" (Press release). Phoenix, Arizona: Honeywell Aerospace. 2017-04-11.
^ a b cSchoneberger, William A.; Scholl, Robert R. H. (1985). Out of Thin Air: Garrett's First 50 Years. Garrett Corporation. pp. 153, 174–175, 203. ISBN 9780961702908.
^ a b c d e f"Garrett TPE331". Collection. Canadian Museum of Flight. Archived from the original on 2019-07-04.
^Wilkinson, Paul H. (1964). Aircraft engines of the World 1964/65 (20th ed.). London: Sir Isaac Pitman & Sons Ltd. p. 43.
^George, Fred (2017-01-30). "Used Aircraft Report: Beech King Air B100". Business & Commercial Aviation. Aviation Week Network.
^Honeywell (AlliedSignal, Garrett, AiResearch) (May 22, 2014). E4WE. Federal Aviation Administration (FAA) (Report). Type Certificate Data Sheet (34 ed.).{{cite report}}: CS1 maint: multiple names: authors list (link)
^Honeywell (AlliedSignal, Garrett) (February 1, 2000). E18NE. Federal Aviation Administration (FAA) (Report). Type Certificate Data Sheet (9 ed.).
^Honeywell (AlliedSignal, Garrett, AiResearch) (February 1, 2000). E3WE. Federal Aviation Administration (FAA) (Report). Type Certificate Data Sheet (8 ed.).{{cite report}}: CS1 maint: multiple names: authors list (link)
^Honeywell (AlliedSignal, Garrett, AiResearch) (February 1, 2000). E2WE. Federal Aviation Administration (FAA) (Report). Type Certificate Data Sheet (8 ed.).{{cite report}}: CS1 maint: multiple names: authors list (link)
^ a bLeyes & Fleming 1999, p. 648.
^ a bLeyes & Fleming 1999, p. 652.
^Leyes & Fleming 1999, p. 653.
^Leyes & Fleming 1999, p. 656.
^Leyes & Fleming 1999, p. 661.
^"Garrett engine is redesignated". Regional Airline Report. Airline Executive. February 1988. p. 12. ISSN 0278-6702.
^Leyes & Fleming 1999, pp. 710–711.
^Leyes & Fleming 1999, p. 645.
^ a b c d e f"TPE331-10 Turboprop Engine" (PDF). Honeywell Aerospace. April 2006. Archived from the original (PDF) on 2012-07-19.
^"TPE331-10 Turboprop Engine" (PDF). Honeywell Aerospace. February 2024. Archived (PDF) from the original on 2023-01-05.
McClellan, J. Mac (July 1983). "Turboprop progress: Garrett stakes its fortune on engines that offer reliability with minimum maintenance". Flying. Vol. 110, no. 7. pp. 31–32. ISSN 0015-4806.
Frignac, J-P.; Privoznik, E. J. (March 12–15, 1979). The growth and evolution of the TPE331. Gas Turbine Conference & Exhibit & Solar Energy Conference. doi:10.1115/79-GT-164. ISBN 978-0-7918-7968-9. OCLC 8518974705.
External links
Wikimedia Commons has media related to Garrett TPE331.
TPE 331 Cost Protection Programs
TPE 331 Engine Conversions
Power and fuel flow versus altitude and speed, for version 10. (Archive)