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The Sikorsky S-70
Sikorsky S-70
is an American medium transport/utility helicopter family manufactured by Sikorsky Aircraft. It was developed for the U.S. Army in the 1970s, winning a competition to be designated the UH-60 Black Hawk
UH-60 Black Hawk
and spawning a large family in U.S. military service. New and improved versions of the UH-60 have been developed since. Civilian versions, and some military versions are produced under various S-70 model designations.

Contents

1 Development 2 Variants

2.1 H-60 2.2 S-70 2.3 Derivatives

3 Civilian operators

3.1 Former operators

4 Specifications (S-70i) 5 See also 6 References 7 External links

Development[edit] The S-70 family was developed to meet a US Army
US Army
requirement to replace the UH-1 Iroquois
UH-1 Iroquois
family of utility medium-lift helicopters in 1972. Three YUH-60A prototypes were constructed, with the first flying in October 1974. They were evaluated against the Boeing-Vertol YUH-61A. The YUH-60A was selected for production, and entered service as the UH-60A Black Hawk with the US Army
US Army
in 1979.[2] After entering service, the helicopter was modified for new missions and roles, including mine laying and medical evacuation.[citation needed] An EH-60 variant was developed to conduct electronic warfare and special operations aviation developed the MH-60 variant to support its missions.[3] In the late 1980s the model was upgraded to the UH-60L, which featured more power and lift with the upgrade to the -701C model of the GE T700 engine. The improved UH-60M model was developed in the early 2000s.[2] The UH-60M and its International version, the S-70i, include GPS navigation, a glass cockpit, an integrated Flight Management System, and a significant upgrade to the powertrain and rotor system adding both power and lift capability.[citation needed] The S-70 can perform a wide array of missions, including air cavalry, electronic warfare, and aeromedical evacuation: several versions are used to transport the President of the United States, which while carrying the President is known as "Marine One". In air assault operations it can move a squad of 11 combat troops and equipment or carry the 105 mm M102 howitzer, thirty rounds of ammunition, and a six-man crew. Alternatively, it can carry 2,600 lb (1,200 kg) of cargo or sling load 9,000 lb (4,100 kg) of cargo. The S-70 is equipped with advanced avionics and electronics, such as the Global Positioning System.

HH-60G Pave Hawk

The United States Navy
United States Navy
received the first navalized SH-60B Seahawk in 1983, and the SH-60F Ocean Hawk in 1988. The HH-60G Pave Hawk is a highly modified version of the S-70 primarily designed to recover downed aircrew or other isolated personnel during war and equipped with a rescue hoist with a 250 ft (76 m) cable that has a 600 lb (270 kg) lift capability, and a retractable in-flight refueling probe. The United States Air Force
United States Air Force
received the MH-60G Pave Hawk in 1982. The United States Coast Guard
United States Coast Guard
received the HH-60J Jayhawk in 1992. It utilizes the equipment of the HH-60G Pave Hawk on the navalized SH-60 platform.[4] The S-70A Firehawk is a version of the S-70 designed for firefighting, rescue, medical evacuation, and external lift of bulky cargo and equipment. The Oregon National Guard was the first military organization in the world to add the Firehawk to its inventory; the Los Angeles County Fire Department
Los Angeles County Fire Department
was the first municipal organization.[citation needed] The Army also flies medical evacuation models which are configured as rotary winged medical suites. It also uses the S-70 for special operations by the 160th Special Operations Aviation Regiment
160th Special Operations Aviation Regiment
("Night Stalkers") at Fort Campbell, Kentucky, designated as the MH-60K.[citation needed] The Maple Hawk was a variant offered by Sikorsky to the Canadian Forces during[when?] the tender to replace the military's search and rescue helicopters.[citation needed] The unit cost varies with the version. For example, the unit cost of the Army's UH-60L Black Hawk was $5.9 million while the unit cost of the Air Force MH-60G Pave Hawk was $10.2 million.[citation needed] Variants[edit]

US Navy
US Navy
SH-60B Seahawk

H-60[edit]

AH-60 Arpia III - Based on the UH-60H platform, is an indigenous development made by the Colombian Air Force, Israel Aircraft Industries (IAI) (Elbit Systems), and Sikorsky Aircraft. Main armament is Hellfire anti-tank missiles and a GAU-21
GAU-21
machine gun on an indigenously developed turret.[5] AH-60 Arpia IV - Based on the UH-60L, is an indigenous development made by the Colombian Air Force, IAI (Elbit Systems), and Sikorsky. Main armament is the Spike NLOS and a Nexter
Nexter
THL-20 gun turret.[6] UH-60 Black Hawk: The basic military utility helicopter for the US Army, with MH-60A, K, L, and M Special
Special
Operations variants.

VH-60 White Hawk: The US presidential transport helicopter, Marine One

SH-60 Seahawk: Variant for anti-submarine warfare, search and rescue, maritime patrol, all-weather and day/night for the US Navy.

Sikorsky MH-60R Seahawk, multimission maritime helicopter for the U.S. Navy Sikorsky MH-60S, unofficially known as the "Knighthawk", maritime medium-heavy lift helicopter for the U.S. Navy

HH-60 Pave Hawk: Heli-rescue variant for search and rescue, MEDEVAC, and combat search and rescue use on day and night operations for the USAF.

Sikorsky MH-60G Pave Hawk, Special
Special
Operations search-and-rescue helicopter variant for the U.S. Air Force.

HH-60 Jayhawk: Variant for maritime patrol, interdiction, and search and rescue for the United States
United States
Coast Guard. The MH-60T Jayhawk is an upgraded version.

S-70[edit]

A VH-60 flies over the Potomac

S-70C Firehawk at Fox Field, California

The company name for the H-60/S-70 family is the S-70 Black Hawk.

S-70A Black Hawk (UH-60 Black Hawk): Military model for the export market. S-70A Firehawk Firefighting
Firefighting
variant of the UH-60L. Tank system designed and built by Aero Union
Aero Union
in Chico, California. S-70A (N) Naval Hawk Maritime variant that blends the S-70A Black Hawk and S-70B Seahawk designs. S-70B/C Seahawk: Maritime military model for the export market. S-70A-9: Australian derivative Black Hawk S-70C Firehawk: Commercial variant S-70i Black Hawk: International military version assembled by Sikorsky subsidiary, PZL Mielec
PZL Mielec
in Poland.[7][8]

Derivatives[edit]

Sikorsky S-71
Sikorsky S-71
- a proposed attack helicopter using dynamic components from the S-70.[9][10][11] Sikorsky S-92
Sikorsky S-92
- Civilian medium-lift derivative of the S-70/H-60 with dynamic components based on S-70/H-60 components.[12] The S-92 took its maiden flight on December 23, 1998 at the Sikorsky Development Flight Center, West Palm Beach, Florida.[13]

H-92 Superhawk - Military version of the S-92. The Sikorsky CH-148 Cyclone is the H-92 version for the Canadian Forces.

Turkish Aerospace Industries
Turkish Aerospace Industries
T-70: A Turkish variant of the S-70i, built under license by Turkish Aerospace Industries
Turkish Aerospace Industries
with indigenous Turkish mission-computer and avionics (by Aselsan); flight controls, landing gear and transmission (by Alp Aviation); and T700-TEI-701D engines under license from General Electric (by Tusaş Engine Industries) .[14][15] Turkey
Turkey
was to initially produce about 109 T-70s under license. US Ambassador to Turkey
Turkey
Frank Ricciardone stated that Turkey
Turkey
now intends to produce some 600 T-70s.[16]

Civilian operators[edit] For the military models operators, see Sikorsky UH-60 Black Hawk. For naval model operators, see Sikorsky SH-60 Seahawk.

 Argentina

Presidential Air Group[17][18]

 Colombia

Colombian National Police[19]

 Mexico

Federal Police[20] Jalisco
Jalisco
State Police[21]

 Saudi Arabia

Ministry of Interior[22]

 Turkey

General Directorate of Security[23]

 United States

Los Angeles County Fire Department[24] U.S. Customs and Border Protection[25][26]

Former operators[edit]

 Hong Kong

Government Flying Service[27]

Specifications (S-70i)[edit]

Data from Sikorsky[28] General characteristics

Crew: two Capacity: 14-17 seats/12 troops/6 stretchers Payload: 4,072 kg (9,000 lb) externally slung Length: 19.76 m (64 ft 10 in) Rotor diameter: 53 ft 8 in (16.36 m) Height: 5.33 m (17 ft 6 in) Empty weight: 5347 kg (11,790 lb) Max. takeoff weight: 9,979 kg (22,000 lb) Fuel, internal: 1,360 L Auxiliary Fuel: 2x 700 L tanks internally, 1,705 L (450 US gal) tank on each inboard pylon and 872 L (230 US gal) tank on each outboard pylon, or 1,705 L (450 US gal) tank on each pylon Powerplant: 2 × General Electric T700-GE-701D turboshaft, 1,409 kW (1,940 shp) at 0.462 Specific fuel consumption[29] each

Performance

Maximum speed: 361 km/h (195 knots, 224 mph) Cruise speed: 163 knots (301.8 km/h), max cruise (149 knots, normal cruise) Range: 463 km, (288 mi, 250 nmi) with 20 min reserve Service ceiling: 6,096 m (20,000 ft) Rate of climb: 11.43 m/s (2,250 ft/m)

Armament

Guns: M240, MAG-58, M3M, Gau-19 Rockets: Hydra Missiles: Hellfire (x16)

See also[edit]

Aviation portal

U.S. helicopter armament subsystems

Related development

Harbin Z-9 MH-60 "Knight Hawk" Mitsubishi H-60 Sikorsky CH-148 Cyclone Sikorsky HH-60 Pave Hawk Sikorsky MH-60 Jayhawk Sikorsky S-92 Sikorsky SH-60 Seahawk Sikorsky UH-60 Black Hawk VH-60 Presidential Hawk

Related lists

List of active military aircraft of the United States List of helicopters List of Sikorsky S-70
Sikorsky S-70
Models List of utility helicopters

References[edit]

Notes

^ "Sikorsky". www.sikorsky.com.  ^ a b Bishop, Chris (2008). Sikorsky UH-60 Black Hawk. Osprey Publishing Company. ISBN 978-1-84176-852-6.  ^ Tomajczyk 2003, pp. 15–29. ^ "SH-60 Sea Hawk helicopter". navy.mil. Retrieved 20 June 2017.  ^ Infodefensa.com (9 March 2015). "El Sikorsky AH-60L Arpía IV de la Fuerza Aérea colombiana: ¿Pasos hacia la disuasión efectiva? - Opinión Infodefensa América".  ^ "Fuerza Aérea Colombiana presenta el AH-60L Arpía IV". www.webinfomil.com.  ^ "Sikorsky breathes new life into PZL Mielec". Flight International, June 8, 2010. ^ "First S-70i Helicopter
Helicopter
Fully Assembled at Sikorsky Facility in Poland". Sikorsky, March 15, 2010. ^ "American airplanes: Sikorsky". Aerofiles.com. 2009-04-26. Retrieved 2011-04-07.  ^ Sikorsky Helicopters - Helis.com ^ "S-71 image". deviantart.com. Retrieved 2014-06-27.  ^ Donald, David, ed. "Sikorsky S-92". The Complete Encyclopedia of World Aircraft. Barnes & Nobel Books, 1997. ISBN 0-7607-0592-5. ^ Frawley, Gerald. "Sikorsky S-92". The International Directory of Military Aircraft, 2002/2003. Aerospace Publications, 2002. ISBN 1-875671-55-2. ^ "Sikorsky wins Turkish utility helicopter battle". FlightGlobal.com. 2011-04-21. Retrieved 2014-06-27.  ^ "News". OnlineAMD.com. 2011-04-25. Retrieved 2014-06-27.  ^ "Can Turkey
Turkey
Afford Its Extensive Defense Plans?". DefenseNews.com. Retrieved 2014-06-27.  ^ "World Air Forces 2004". Flightglobal Insight. 2004. Retrieved 17 January 2014.  ^ "Presidential Sikorsky S-70A-30". Demand media. Retrieved 12 March 2013.  ^ " Colombia
Colombia
requests nine more Black Hawks for counter-narcotics fight". flightglobal.com. Retrieved 12 March 2013.  ^ "Mexican Police Receive UH-60M Black Hawks". Air International. Vol. 80 no. 3. March 2011. p. 28. ISSN 0306-5634.  ^ "Mexican State of Jalisco
Jalisco
takes delivery of S-70i". helihub.com. Retrieved 12 March 2013.  ^ "Black Hawki z Mielca w Arabii Saudyjskiej". altair.com. Retrieved 12 March 2013.  ^ "Sayfalar - Bell 429 Album". Havacilik.pol.tr. Archived from the original on 2014-05-06. Retrieved 2014-06-27.  ^ "L.A. County Fire Air Operations". lacounty.gov. Retrieved 2013-03-12.  ^ "Black Hawk Made: A Peek Inside the Sikorsky Factory". wired.com. Retrieved 12 March 2013.  ^ "CPB S-70". Demand media. Retrieved 2013-03-12.  ^ " Hong Kong
Hong Kong
Government Flying Service S-70". Retrieved 12 March 2013.  ^ S70-061_IBH_SS.pdf sikorsky.com ^ "General Electric T700C".

Bibliography

Leoni, Ray D. (2007). Black Hawk, The Story of a World Class Helicopter. American Institute of Aeronautics and Astronautics
American Institute of Aeronautics and Astronautics
(AIAA). ISBN 978-1-56347-918-2.  Tomajczyk, Stephen F. (2003). Black Hawk. MBI. ISBN 0-7603-1591-4. 

External links[edit]

Wikimedia Commons has media related to Sikorsky S-70.

S-70 Black Hawk family page at Sikorsky.com S-70 Seahawk family page at Sikorsky.com S-70i page at Sikorsky.com Sikorsky UH-60/S-70 Black Hawk Family page on centennialofflight.net Sikorsky S-70
Sikorsky S-70
Black Hawk page on vectorsite.net Firehawk, Inc web site Sikorsky - Aerofiles.com HELIS.com Sikorsky S-70/H-70 Hawk Family Database S-70i Black Hawk multirole combat helicopter(Air recognition)

v t e

Sikorsky aircraft

Fixed-wing aircraft (company designations)

S-1 S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-9 S-10 S-11 S-12 S-13 S-14 S-15 S-16 S-17 S-18 S-19 S-20 S-21 S-22 S-23 S-24 S-25 S-26 S-27 S-28 S-29-A S-30 S-31 S-32 S-33 S-34 S-35 S-36 S-37 S-38 S-39 S-40 S-41 S-42 S-43 VS-44 S-45

Fixed-wing aircraft (military designations)

C-6 C-28 JRS JR2S PS RS XBLR-3 XPBS XSS XV-2

Helicopters (company designations)

VS-300 (S-46) S-47 S-48 S-49 S-50 S-51 S-52 S-53 S-54 S-55 S-56 S-57 S-58 S-59 S-60 S-61 S-61L/N S-61R S-62 S-63 S-64 S-65 S-66 S-67 S-68 S-69 S-70 S-71 S-72 S-74 S-75 S-76 S-80 S-92 S-97 S-300 S-333 S-434

Helicopters (military designations)

SH-3 HH-3E/F R-4 H-5 H-6 H-18 H-19 H-34 CH-37 XH-39 HH-52A CH-53 CH-53E CH-53K CH-54 HLH HH-60G HH-60J MH-60R/S SH-60B/F SH-60J/K UH-60 VH-60 RAH-66 H-92 CH-124 CH-148

Experimental aircraft

Cypher Cypher II Fire

.