Lycoming T53

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
Major applications	AH-1 Cobra ; Kaman K-MAX ; OV-1 Mohawk ; UH-1 Iroquois
Developed into	Lycoming T55

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.

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

AIDC T-CH-1 (T53-L-701)
AIDC XC-2
Bell 204B (T5311A)
Bell 205A (T5313B)
Bell 205A-1 (T5313B and T5317A)
Bell AH-1 Cobra (T53-L-703)
Bell UH-1H Iroquois (T53-L-703)
Bell XV-15 (LTC1K-4K)
Canadair CL-84 Dynavert
Doak VZ-4
F+W C-3605
Grumman OV-1D Mohawk (T53-L-701)
Kaman HH-43 Huskie
Kaman K-MAX (T5317A-1)
Ryan VZ-3 Vertiplane
Vertol VZ-2 (YT53)
Eagle Single (T5317A, T5317B, or T5317BCV)^[2]^[3]

Non-aircraft

DB Class 210, diesel railway locomotive

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

Compressor: 5-stage axial and 1-stage centrifugal
Combustors: reverse flow
Turbine: 2-stage high pressure turbine; 2-stage power turbine

Performance

Maximum power output: 1,451 shp (1,082 kW)
Overall pressure ratio: 7.4
Air mass flow: 10.7 lb/s (4.853 kg/s)
Power-to-weight ratio: 2.109 hp/lb

References

^ "sir roy | roy dobson | managing director | 1955 | 1400 | Flight Archive". Archived from the original on 2017-05-17.
^ "Eagle Single | Airframe Customizations | Eagle Copters". Retrieved 6 May 2020.
^ "Eagle Copters Obtains U.S. FAA Certification for the Eagle Single". Retrieved 6 June 2023.
^ 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.

External links

[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

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