Sikorsky Aircraft

Updated: 11/4/2025, 2:07:37 PM Wikipedia source

Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. It was established by the Russian-American aviation pioneer Igor Sikorsky in 1923, and was among the first companies to manufacture helicopters for civilian and military use. It also produced seaplanes for passenger transport and surface vehicles such as trains and boats. Sikorsky was owned by United Technologies Corporation until November 2015, when it was sold to Lockheed Martin.

Infobox

Parent

mw- United Aircraft and Transport Corporation (1929–1934)United Aircraft Corporation (1934–1974)United Technologies (1975–2015)Lockheed Martin (2015–present)

Founded

1923; 102 years ago (1923)

Founder

Igor Sikorsky

Website

sikorsky.com

Industry

Aviation Defense industry

Products

Helicopters, other aircraft

Divisions

Sikorsky Development Flight Center, West Palm Beach, Florida, US (founded 1977)

Key people

Richard Benton (president)

Company type

Subsidiary

Headquarters

Stratford, Connecticut, United States

Subsidiaries

Schweizer Aircraft (closed 2012) PZL Mielec (now a Lockheed Martin subsidiary)Tata–Sikorsky Aerospace Limited (JV with TASL)

Number of employees

15,975 (2014)

Tables

· Products › Helicopters, production

S-47

Model

S-47

Designation

R-4

From

1942

Until

1944

MTOW (lb, t)

2,581

MTOW (lb, t)

1.17

Notes

World's first production helicopter

S-48/S-51

Model

S-48/S-51

Designation

R-5/H-5

From

1944

Until

1952

MTOW (lb, t)

4,825

MTOW (lb, t)

2.19

Notes

higher load, endurance, speed, and service ceiling than the R-4

S-49

Model

S-49

Designation

R-6

From

1945

MTOW (lb, t)

2,600

MTOW (lb, t)

1.18

Notes

improved R-4 with new fuselage

S-52

Model

S-52

Designation

H-18/HO5S

From

1947

MTOW (lb, t)

2,700

MTOW (lb, t)

1.225

Notes

all-metal rotors

S-55

Model

S-55

Designation

H-19 Chickasaw

From

1949

MTOW (lb, t)

7,500

MTOW (lb, t)

3.41

Notes

ten passenger utility, H-19 Chickasaw

S-56

Model

S-56

Designation

CH-37 Mojave

From

1953

MTOW (lb, t)

31,000

MTOW (lb, t)

14.1

Notes

twin-piston engined, H-37A Mojave

S-58

Model

S-58

Designation

H-34 Choctaw

From

1954

Until

1970

MTOW (lb, t)

14,000

MTOW (lb, t)

6.35

Notes

18 passenger larger, advanced S-55, including ASW, VIP versions

S-61

Model

S-61

Designation

SH-3

From

1959

MTOW (lb, t)

19,000

MTOW (lb, t)

8.62

Notes

medium-lift transport/airliner

S-61

Model

S-61

Designation

SH-3 Sea King

From

1959

Until

1970s

MTOW (lb, t)

22,050

MTOW (lb, t)

Notes

ASW, SAR or transport

S-61

Model

S-61

Designation

CH-124 Sea King

From

1963

Until

2018

MTOW (lb, t)

22,050

MTOW (lb, t)

Notes

Canadian Armed Forces export version

S-61R

Model

S-61R

Designation

CH-3/HH-3

From

1963

Until

1970s

MTOW (lb, t)

22,050

MTOW (lb, t)

Notes

S-61 with rear cargo ramp: CH-3, HH-3 "Jolly Green Giant", and HH-3F Pelican (1963)

S-62

Model

S-62

Designation

HH-52 Seaguard

From

1958

MTOW (lb, t)

8,300

MTOW (lb, t)

3.76

Notes

amphibious helicopter

S-64 Skycrane

Model

S-64 Skycrane

Designation

CH-54 Tarhe

From

1962

MTOW (lb, t)

42,000

MTOW (lb, t)

19.05

Notes

"flying crane"

S-64

Model

S-64

Designation

CH-54 Tarhe

From

1962

MTOW (lb, t)

47,000

MTOW (lb, t)

Notes

US Army transport

S-65

Model

S-65

Designation

CH-53 Sea Stallion

From

1964

Until

1978

MTOW (lb, t)

42,000

MTOW (lb, t)

19.1

Notes

medium/heavy lift transport

S-65

Model

S-65

Designation

MH-53

From

1967

Until

1970

MTOW (lb, t)

46,000

MTOW (lb, t)

Notes

long-range search and rescue

S-70

Model

S-70

Designation

UH-60 Black Hawk

From

1974

Until

current

MTOW (lb, t)

23,500

MTOW (lb, t)

10.66

Notes

twin-turbine medium transport/utility, selected in 1976 for the US Army UTTAS, multiple models

S-70

Model

S-70

Designation

SH-60 Sea Hawk

From

1979

Until

current

MTOW (lb, t)

23,000

MTOW (lb, t)

10.4

Notes

US Navy anti-ship warfare, combat, SAR, support, Medevac

S-70

Model

S-70

Designation

HH-60 Pave Hawk

From

1982

Until

current

MTOW (lb, t)

22,000

MTOW (lb, t)

9.9

Notes

USAF combat, SAR, Medevac with PAVE electronics

S-70

Model

S-70

Designation

HH-60 Jayhawk

From

1990

Until

1996

MTOW (lb, t)

21,884

MTOW (lb, t)

9.93

Notes

US Coast Guard SAR and patrol

S-76

Model

S-76

From

1977

Until

current

MTOW (lb, t)

11,700

MTOW (lb, t)

5.31

Notes

twin turbine, 14-seat commercial (ex S-74)

S-80

Model

S-80

Designation

CH-53E Super Stallion

From

1974

Until

1980s

MTOW (lb, t)

73,500

MTOW (lb, t)

33.3

Notes

CH-53 derived, export version: S-80

S-92

Model

S-92

Designation

H-92 Superhawk

From

1998

Until

current

MTOW (lb, t)

27,700

MTOW (lb, t)

12.6

Notes

twin-turbine medium-lift developed from the S-70

S-92

Model

S-92

Designation

CH-148 Cyclone

From

2018

Until

current

MTOW (lb, t)

28,650

MTOW (lb, t)

Notes

Canadian military S-92 to replace the CH-124 Sea King

S-95

Model

S-95

Designation

CH-53K King Stallion

From

2018

Until

current

MTOW (lb, t)

84,700

MTOW (lb, t)

38.4

Notes

CH-53E Super Stallion/S-80 development

S-300C

Model

S-300C

From

1964

Until

2018

MTOW (lb, t)

2,050

MTOW (lb, t)

0.93

Notes

three-seat single-piston, currently made by Schweizer RSG

S-333

Model

S-333

From

1992

Until

2018

MTOW (lb, t)

2,550

MTOW (lb, t)

1.16

Notes

single turbine S-300, currently made by Schweizer RSG

S-434

Model

S-434

From

2008

Until

2015

MTOW (lb, t)

3,200

MTOW (lb, t)

1.45

Notes

improved S-333

Model	Designation	From	Until	MTOW (lb, t)		Notes
S-47	R-4	1942	1944	2,581	1.17	World's first production helicopter
S-48/S-51	R-5/H-5	1944	1952	4,825	2.19	higher load, endurance, speed, and service ceiling than the R-4
S-49	R-6	1945		2,600	1.18	improved R-4 with new fuselage
S-52	H-18/HO5S	1947		2,700	1.225	all-metal rotors
S-55	H-19 Chickasaw	1949		7,500	3.41	ten passenger utility, H-19 Chickasaw
S-56	CH-37 Mojave	1953		31,000	14.1	twin-piston engined, H-37A Mojave
S-58	H-34 Choctaw	1954	1970	14,000	6.35	18 passenger larger, advanced S-55, including ASW, VIP versions
S-61	SH-3	1959		19,000	8.62	medium-lift transport/airliner
S-61	SH-3 Sea King	1959	1970s	22,050	10	ASW, SAR or transport
S-61	CH-124 Sea King	1963	2018	22,050	10	Canadian Armed Forces export version
S-61R	CH-3/HH-3	1963	1970s	22,050	10	S-61 with rear cargo ramp: CH-3, HH-3 "Jolly Green Giant", and HH-3F Pelican (1963)
S-62	HH-52 Seaguard	1958		8,300	3.76	amphibious helicopter
S-64 Skycrane	CH-54 Tarhe	1962		42,000	19.05	"flying crane"
S-64	CH-54 Tarhe	1962		47,000	21	US Army transport
S-65	CH-53 Sea Stallion	1964	1978	42,000	19.1	medium/heavy lift transport
S-65	MH-53	1967	1970	46,000	21	long-range search and rescue
S-70	UH-60 Black Hawk	1974	current	23,500	10.66	twin-turbine medium transport/utility, selected in 1976 for the US Army UTTAS, multiple models
S-70	SH-60 Sea Hawk	1979	current	23,000	10.4	US Navy anti-ship warfare, combat, SAR, support, Medevac
S-70	HH-60 Pave Hawk	1982	current	22,000	9.9	USAF combat, SAR, Medevac with PAVE electronics
S-70	HH-60 Jayhawk	1990	1996	21,884	9.93	US Coast Guard SAR and patrol
S-76		1977	current	11,700	5.31	twin turbine, 14-seat commercial (ex S-74)
S-80	CH-53E Super Stallion	1974	1980s	73,500	33.3	CH-53 derived, export version: S-80
S-92	H-92 Superhawk	1998	current	27,700	12.6	twin-turbine medium-lift developed from the S-70
S-92	CH-148 Cyclone	2018	current	28,650	13	Canadian military S-92 to replace the CH-124 Sea King
S-95	CH-53K King Stallion	2018	current	84,700	38.4	CH-53E Super Stallion/S-80 development
S-300C		1964	2018	2,050	0.93	three-seat single-piston, currently made by Schweizer RSG
S-333		1992	2018	2,550	1.16	single turbine S-300, currently made by Schweizer RSG
S-434		2008	2015	3,200	1.45	improved S-333

· Products › Helicopters, prototypes

S-46

Model

S-46

Designation

VS-300

Year

1939

MTOW (lb, t)

1,150

MTOW (lb, t)

0.52

Notes

first US single lifting rotor helicopter

S-50

Model

S-50

Notes

projected small helicopter; only a wooden mockup built

S-53

Model

S-53

Designation

XHJS-1

Year

1947

Notes

naval utility, two prototypes

S-54

Model

S-54

Year

1948

Notes

R-4B modified to a "sesqui-tandem" configuration

S-59

Model

S-59

Designation

XH-39

Year

1953

MTOW (lb, t)

3,361

MTOW (lb, t)

1.53

Notes

2 H-18s converted to use one turbine, 1 prototype

S-60

Model

S-60

Year

1959

MTOW (lb, t)

21,000

MTOW (lb, t)

9.5

Notes

CH-37-derived prototype "flying crane", crashed 1961

S-67

Model

S-67

Designation

Blackhawk

Year

1970

MTOW (lb, t)

24,272

MTOW (lb, t)

Notes

attack prototype, predecessor: S-66 AAFSS competitor

S-68

Model

S-68

Notes

proposed modification of the S-58T, none built

S-69

Model

S-69

Year

1973

MTOW (lb, t)

12,500

MTOW (lb, t)

5.7

Notes

prototype jet compound helicopter with coaxial rotors

S-71

Model

S-71

Designation

AAH

Notes

US Army Advanced Attack Helicopter entry with S-70 dynamic components

S-72

Model

S-72

Year

1976

MTOW (lb, t)

26,047

MTOW (lb, t)

11.8

Notes

NASA experimental jet hybrid

S-73

Model

S-73

Designation

HLH

MTOW (lb, t)

118,000

MTOW (lb, t)

53.5

Notes

US Army Heavy Lift Helicopter entry

S-75

Model

S-75

Year

1984

MTOW (lb, t)

8,470

MTOW (lb, t)

3.82

Notes

advanced Composite Airframe Program (ACAP) all-composite, two prototypes

S-78-20 & S-78-29

Model

S-78-20 & S-78-29

Year

1975

MTOW (lb, t)

17,520 (-20)19,997 (-29)

MTOW (lb, t)

7.95 (-20)9.07 (-29)

Notes

proposed variation on S-70 in 20- and enlarged 29-pax models, purpose-built for commercial use. Initially designated S-70C-. Reexplored and redesignated, post S-76, but ultimately never built.

S-97 Raider

Model

S-97 Raider

Designation

AAS

Year

2015

MTOW (lb, t)

11,000

MTOW (lb, t)

4.99

Notes

US Army Armed Aerial Scout proposed compound helicopter

S-100

Model

S-100

Designation

SB>1 Defiant

Year

2019

Notes

compound helicopter prototype with rigid coaxial rotors for US Army's Future Long-Range Assault Aircraft competition

S-102

Model

S-102

Designation

Raider X

Year

2023

Notes

compound helicopter with rigid coaxial rotors for US Army's Future Attack Reconnaissance Aircraft competition

S-103

Model

S-103

Designation

Defiant X

Notes

compound helicopter with rigid coaxial rotors for US Army's Future Long-Range Assault Aircraft competition

Firefly

Model

Firefly

Notes

electric S-300 unveiled in 2010

Model

Year

2008

MTOW (lb, t)

6,000

MTOW (lb, t)

2.72

Notes

experimental high-speed compound helicopter with coaxial rotors

Model	Designation	Year	MTOW (lb, t)		Notes
S-46	VS-300	1939	1,150	0.52	first US single lifting rotor helicopter
S-50					projected small helicopter; only a wooden mockup built
S-53	XHJS-1	1947			naval utility, two prototypes
S-54		1948			R-4B modified to a "sesqui-tandem" configuration
S-59	XH-39	1953	3,361	1.53	2 H-18s converted to use one turbine, 1 prototype
S-60		1959	21,000	9.5	CH-37-derived prototype "flying crane", crashed 1961
S-67	Blackhawk	1970	24,272	11	attack prototype, predecessor: S-66 AAFSS competitor
S-68					proposed modification of the S-58T, none built
S-69		1973	12,500	5.7	prototype jet compound helicopter with coaxial rotors
S-71	AAH				US Army Advanced Attack Helicopter entry with S-70 dynamic components
S-72		1976	26,047	11.8	NASA experimental jet hybrid
S-73	HLH		118,000	53.5	US Army Heavy Lift Helicopter entry
S-75		1984	8,470	3.82	advanced Composite Airframe Program (ACAP) all-composite, two prototypes
S-78-20 & S-78-29		1975	17,520 (-20)19,997 (-29)	7.95 (-20)9.07 (-29)	proposed variation on S-70 in 20- and enlarged 29-pax models, purpose-built for commercial use. Initially designated S-70C-. Reexplored and redesignated, post S-76, but ultimately never built.
S-97 Raider	AAS	2015	11,000	4.99	US Army Armed Aerial Scout proposed compound helicopter
S-100	SB>1 Defiant	2019			compound helicopter prototype with rigid coaxial rotors for US Army's Future Long-Range Assault Aircraft competition
S-102	Raider X	2023			compound helicopter with rigid coaxial rotors for US Army's Future Attack Reconnaissance Aircraft competition
S-103	Defiant X				compound helicopter with rigid coaxial rotors for US Army's Future Long-Range Assault Aircraft competition
Firefly					electric S-300 unveiled in 2010
X2		2008	6,000	2.72	experimental high-speed compound helicopter with coaxial rotors

References

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https://web.archive.org/web/20250613175007/https://www.cbia.com/news/featured/lockheed-martin-names-new-sikorsky-head/
Connecticut Post
https://web.archive.org/web/20180130230712/http://www.ctpost.com/news/article/Sikorsky-Aircraft-s-big-impact-on-region-5752274.php
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http://bomanite.com/projectprofile/sikorsky-development-flight-center/
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https://web.archive.org/web/20090702104052/http://www.sikorsky.com/vgn-ext-templating-SIK/v/index.jsp?vgnextoid=2dd9e39d40a78110VgnVCM1000001382000aRCRD
The Story of the Winged-S
The Story of the Winged-S
Spenser 1998
The Story of the Winged-S
[1] [dead link]
http://hsius.com/SASC/About/AboutUs/tabid/84/Default.aspx
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Sikorsky Press Release, February 23, 2009
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http://www.ctpost.com/news/article/Sikorsky-to-close-N-Y-plant-cut-570-jobs-3892430.php
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http://www.airnav.com/airport/CT37
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https://web.archive.org/web/20160126220955/http://www.utc.com/News/Pages/United-Technologies-To-Explore-Strategic-Alternatives-For-Its-Sikorsky-Aircraft-Business.aspx
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https://wayback.archive-it.org/all/20140131212751/http://www.defensenews.com/article/20140127/DEFREG02/301270021/UTC-Weighs-Sikorsky-s-Future
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http://aviationweek.com/defense/sikorsky-not-profitable-enough-united-technologies
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Lockheedmartin.com
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