Lycoming T53

The Lycoming T53, (company designation LTC-1) is a turboshaft engine used on helicopters and (as a turboprop) fixed-wing aircraft since the 1950s. It was designed at the Lycoming Turbine Engine Division in Stratford, Connecticut, by a team headed by Anselm Franz, who was the chief designer of the Junkers Jumo 004 during World War II.

T53
Cutaway view of an early T53 turboprop, with single stage HP and power turbines
Type Turboshaft
National origin United States
Manufacturer Lycoming Engines
Honeywell Aerospace
Ozark Aeroworks LLC
First run ~1955 [1]
Major applications AH-1 Cobra
Kaman K-MAX
OV-1 Mohawk
UH-1 Iroquois
Developed into Lycoming T55

A much larger engine, similar in overall design, became the Lycoming T55 produced by Honeywell Aerospace. The T53 model is produced by Ozark Aeroworks LLC.

Variants

Military designations
Lycoming T53-L-1 turboshaft engine at Steven F. Udvar-Hazy Center in Virginia, USA
T53-L-1
T53-L-1A
770 hp (645 kW)
T53-L-1B
860 hp (645 kW)
T53-L-3
T53-L-5
960 hp (720 kW)
T53-L-7
T53-L-11
1100 hp (820 kW)
T53-L-13
T53-L-13B
1400 shp (1044 kW) improved L-11
T53-L-701
1,400 hp (1044 kW) Turboprop variant used on Mohawk and AIDC T-CH-1
T53-L-703
1,800 hp (1343 kW) improved durability variant of the L-13B

Civil designations
T5307A
commercial L-7
T5309A
commercial L-9A
T5309B
commercial L-9B
T5309C
similar to T5309A but with L-11 combustion chamber
T5311A
1100 shp (820 kW)
T5313A
1400 shp (1044 kW) commercial variant of the L-13
T5313B
1400 shp (1044 kW) commercial variant of the L-13
T5317A
1500 shp (1119 kW) improved variant of the L-13
T5317A-1
T5317B
T5317BCV
LTC1B-1
LTC1B-2
company designation for L-1A
LTC1F-1
company designation for L-3
LTC1F-2
company designation for L-7
LTC1K-1
company designation for L-5
LTC1K-2
company designation for L-9
LTC1K-2A
company designation for L-9A
LTC1K-2B
company designation for L-9B
LTC1K-4
company designation for L-13
LTC1K-4A
for tilt-wing / tilt-rotor aircraft (Canadair CL-84 Dynavert)
LTC1K-4K
1550 shp (1156 kW) direct drive variant of the L-13B
LTC1K-5
company designation for L-11
Kawasaki KT5311A
Kawasaki production for Fuji-Bell 204B helicopters

Applications

Aircraft

Non-aircraft

Specifications (T53-L-701)

Data from Flight International [4]

General characteristics
  • Type: Turboshaft
  • Length: 58.4 in (1,483 mm)
  • Diameter: 23 in (584 mm)
  • Dry weight: 688 lb (312 kg)

Components

Performance

See also

Related development

Related lists

References
  1. "sir roy | roy dobson | managing director | 1955 | 1400 | Flight Archive". Archived from the original on 2017-05-17.
  2. "Eagle Single | Airframe Customizations | Eagle Copters". Retrieved 6 May 2020.
  3. "Eagle Copters Obtains U.S. FAA Certification for the Eagle Single". Retrieved 6 June 2023.
  4. Turbine Engines of the World, 1975
  • Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. p. 132. ISBN 0-7509-4479-X.
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