Английская Википедия:Honeywell T55

Содержание

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Шаблон:Infobox aircraft engine

The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and fixed-wing aircraft (in turboprop form) since the 1950s, and in unlimited hydroplanes since the 1980s. As of 2021, more than 6,000 of these engines have been built. It is produced by Honeywell Aerospace, a division of Honeywell based in Phoenix, Arizona, and was originally designed by the Turbine Engine Division of Lycoming Engines in Stratford, Connecticut, as a scaled-up version of the smaller Lycoming T53. The T55 serves as the engine on several major applications including the CH-47-Chinook, the Bell 309, and the Piper PA-48 Enforcer. The T55 also serves as the core of the Lycoming ALF 502 turbofan. Since the T55 was first developed, progressive increases in airflow, overall pressure ratio, and turbine inlet temperature have more than tripled the power output of the engine.

Variants

Civil and experimental variants

LTC4A-1

Turboprop engine with a power rating of Шаблон:Cvt and dry weight of Шаблон:Cvt; was designated the YT55-L-1 after its 50-hour qualification test was completed in December 1957

LTC4B-1

LTC4B-2

Geared turboshaft engine with an initial power rating of Шаблон:Cvt; completed a 50-hour qualification test demonstrating Шаблон:Cvt in March 1958, and then was designated as the YT55-L-3 with a power rating of Шаблон:Cvt

LTC4B-7

Ungeared version of the LTC4B-2, with an integral oil cooler and tank; demonstrated Шаблон:Cvt in January 1960; the higher power rating resulted from increased turbine inlet temperatures, which came from small modifications learned from YT55-L-1 and YT55-L-3 development experience; completed 50-hour qualification test at Шаблон:Cvt power rating in February 1960, after which it was designated as the YT55-L-5; completed its 150-hour qualification test in September 1960, after which its designation changed from YT55-L-5 to the T55-L-5 production engine

LTC4B-8

Civil designation for the T55-L-7 military engine; dry weight of Шаблон:Cvt also powered the original Bell 214 helicopter as a Шаблон:Cvt engine in 1970

LTC4B-8D

Шаблон:Cvt engine powering the Bell 214A helicopter; uprated from the T55-L-7C; 433 engines produced between 1973 and 1977 for this military helicopter

LTC4B-11

similar to L-7 with two-stage gas generator turbine

LTC4B-12

Turboprop engine with a power rating of Шаблон:Cvt and a weight of Шаблон:Cvt, Шаблон:Cvt more than the T55-L-11 that it is derived from; brake-specific fuel consumption (BSFC) of Шаблон:Cvt

LTC4C-2

Civil designation for the YT55-L-1A military turboprop engine

LTC4G-3

Turboprop engine with a maximum and normal power rating of Шаблон:Cvt; high-performance version of the T55-L-1

LTC4G-4

LTC4K

9-stage compressor

LTC4K-2

LTC4M-1

LTC4R-1

Turboprop engine with a power rating of Шаблон:Cvt, weight of Шаблон:Cvt, pressure ratio of 8.2:1, and a BSFC of Шаблон:Cvt

PLF1A-2

First experimental high-bypass turbofan engine produced in the United States, initially run in February 1964; two produced; used the engine core of the T55-L-7;Шаблон:Sfn Шаблон:Cvt geared fan stage, producing a static thrust of Шаблон:Cvt; predecessor of the ALF 502 and LF 507 production turbofans; bypass ratio of 6:1; weight of Шаблон:Cvt maximum pressure ratio of 1.4:1 (fan) and 9.5:1 (engine), turbine inlet temperature of Шаблон:Cvt, maximum rated air flow for the gas generator and fan of Шаблон:Cvt, thrust-specific fuel consumption (TSFC) of Шаблон:Cvt

PLF1B-2

Turbofan with T55 / LTC4K 9-stage compressor gas generator core

PLF1C-1

Turbofan based on the T55-L-7C turboshaft, producing Шаблон:Cvt of thrust; Шаблон:Cvt length, Шаблон:Cvt fan diameter, 6:1 bypass ratio, Шаблон:Cvt weight, TSFC of Шаблон:Cvt

PLF1C-2

Turbofan based on the T55-L-11 turboshaft, producing Шаблон:Cvt of thrust; Шаблон:Cvt length, Шаблон:Cvt fan diameter, 8.2:1 bypass ratio, Шаблон:Cvt weight, TSFC of Шаблон:Cvt

T5508D

Certified September 16, 1975; dry weight Шаблон:Cvt; Шаблон:Cvt engine powering the Bell 214B helicopter, which was produced between 1976 and 1981; 88 engines manufactured for that commercial helicopter; commercial version of the LTC4-8D

AL5512

Certified November 7, 1980; turboshaft engine with a sea-level power rating of Шаблон:Cvt max continuous and Шаблон:Cvt 5-minute takeoff; 30-minute power rating of Шаблон:Cvt with one engine inoperative; dry weight Шаблон:Cvt; used on the Boeing Model 234 (civilian version of the Chinook); based on the T55-L-712; produced between 1979 and 1985, with 44 engines manufactured; also used on the Boeing Model 360, a technology demonstrator helicopter, in 1987

Military variants

YT55-L-1

Turboprop engine with a maximum and normal power rating of Шаблон:Cvt and a pressure ratio of 6:1

YT55-L-1A

Turboprop version of the YT55-L-3, producing Шаблон:Cvt; length Шаблон:Cvt, diameter Шаблон:Cvt, dry weight Шаблон:Cvt, pressure ratio 6.5:1, air mass flow Шаблон:Cvt, BSFC Шаблон:Cvt

YT55-L-3

Turboshaft engine with a maximum and normal power rating of Шаблон:Cvt and a pressure ratio of 6:1; a geared engine that was initially selected to power the Army Chinook helicopter HC-1B (later designated as the CH-47A) in July 1958 by a joint Air Force/Army team

T55-L-5

Turboshaft engine with a maximum and normal power rating of Шаблон:Cvt and a pressure ratio of 6:1; high-speed version of the T55-L-3 allowed for use on the Chinook instead of the geared YT55-L-3 engine due to August 1958 engine contract modification, with the reduction gearing now provided in the helicopter power transmission system instead of the engine; Шаблон:Cvt weight engine; first delivered for the Chinook in August 1960; powered first flight of the Chinook in October 1961; selected for the Curtiss-Wright X-19 tiltrotor aircraft in August 1962; 146 engines manufactured between 1960 and 1963 for the CH-47AШаблон:Sfn

T55-L-7

Turboshaft engine with a power rating of Шаблон:Cvt and a BSFC of Шаблон:Cvt; completed 150-hour qualification test in September 1962 at a Шаблон:Cvt power rating;

T55-L-7B

Military and normal power rating of Шаблон:Cvt; used on the CH-47A

T55-L-7C

Turboshaft engine with a maximum, military, and normal power rating of Шаблон:Cvt; used on the CH-47B; BSFC of Шаблон:Cvt; passed qualification testing in September 1966

YT55-L-9

Turboprop engine with a power rating of Шаблон:Cvt, weight of Шаблон:Cvt, pressure ratio of 6.4:1, and a BSFC of Шаблон:Cvt; used on the Rockwell YAT-28E; also powered Piper Enforcer prototype aircraft for flight tests in 1971 and 1983-1984

T55-L-11

Turboshaft engine with a maximum, military, and normal power rating of Шаблон:Cvt; used on the CH-47C; BSFC of Шаблон:Cvt; completed 50-hour preliminary flight rating test (PFRT) in May 1967

T55-L-712

Шаблон:Cvt turboshaft engine used on the CH-47D, with production starting in 1978; 849 engines manufactured by 1989Шаблон:Sfn

T55-L-714

Шаблон:Cvt turboshaft engine used on the MH-47E Chinook SOF

T55-GA-714A

Шаблон:Cvt turboshaft engine used on the CH-47F; low-rate initial production started in December 1997

T55-L-714A

5,000 shp (3,729 kW)

T55-GA-714C

Шаблон:Cvt turboshaft engine to be tested on an CH-47F testbed aircraft, offering a 25 percent increase in power output and 10 percent reduction in fuel consumption compared to the T55-GA-714A; initial testing of the first engine began in November 2021

T55-L-714C

6,000 shp (4,474 kW)

T55-GA-715

A Шаблон:Cvt turboshaft engine upgrade kit proposed in 2008 for a Шаблон:Cvt growth version of the Chinook

HTS7500

Applications

T55/LTC4

• Bell 214
• Bell 309 KingCobra
• Boeing CH-47 Chinook
• Boeing Chinook (UK variants)
• Boeing Model 360
• Boeing RC-135 - One T55 was fitted to the RC-135E variant to provide power to the aircraft's phased array radar.
• Boeing Vertol BV-347
• Curtiss-Wright X-19
• North American YAT-28E Trojan
• Piper PA-48 Enforcer
• Sikorsky–Boeing SB-1 Defiant
• Unlimited hydroplanes

HTS7500

• Sikorsky–Boeing SB-1 Defiant X

Bibliography

• Шаблон:Cite magazine
• Шаблон:Cite book
• Шаблон:Cite book
• Шаблон:Cite magazine
• Шаблон:Cite magazine

External links

• Honeywell T55 page