Sikorsky S-70: Difference between revisions

S-70 series
	Los Angeles County Fire Department S-70A Firehawk rescuing an injured hiker at Devil's Punchbowl near Palmdale, California
Role	Medium-lift transport/utility helicopter
Manufacturer	Sikorsky Aircraft
First flight	1974
Introduction	1979
Status	Active service
Primary users	U.S. Customs and Border Protection; U.S. Drug Enforcement Administration ; Los Angeles County Fire Department ; Government Flying Service (Hong Kong)
Produced	1970s-present
Variants	UH-60 Black Hawk ; SH-60 Seahawk ; HH-60 Pave Hawk ; HH-60 Jayhawk ; Mitsubishi H-60

Browse history interactively

← Previous edit Next edit →

Content deleted Content added

VisualWikitext

Inline

Revision as of 13:54, 2 June 2010

The Sikorsky S-70 is a 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 Blackhawk and spawning a large family in U.S. military service. Civilian versions, and some military versions are produced under various S-70 model designations.

Development

The S-70 family was developed to meet a US Army requirement to replace the venerable UH-1 Iroquois family of utility medium-lift helicopters in 1972. Three prototypes were constructed, the first (YUH-60A) flying in October 1974, and 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 in 1979. 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 engines.

Newer models are being engineered, which will extend the service life of both UH-60As and UH-60Ls well into the 2020s. They feature still more power and lift and state of the art electronic instrumentation, flight controls and aircraft navigation control.

The S-70 can perform a wide array of missions, including air cavalry, electronic warfare, and aeromedical evacuation: several versions are even 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 (1,170 kg) of cargo or sling load 9,000 lb (4,050 kg) of cargo. The S-70 is equipped with advanced avionics and electronics, such as the Global Positioning System.

The United States Navy received the first navalised 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 (75 m) cable that has a 600 lb (270 kg) lift capability, and a retractable in-flight refueling probe. The United States Air Force received the MH-60G Pave Hawk in 1982.

S-70C Firehawk operated by Brainerd Helicopters, at Fox Field, Lancaster, California

The 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.

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 was the first municipal organization. Brainerd Helicopters of Leesburg, Florida operates the S-70C Firehawk on wildfires under the "FirehawK" brand.

The Army also flies medical evacuation models which are configured as rotary winged medical suites. They also used the S-70 for special operations by the 160th Special Operations Aviation Regiment ("Night Stalkers") known as the MH-60K at Fort Campbell, Kentucky.

The Maple Hawk was a variant offered by Sikorsky to the Canadian Forces during the tender to replace the military's search and rescue helicopters.

The unit cost varies with the version. For example, the unit cost of the Army's UH-60L Black Hawk is $5.9 million while the unit cost of the Air Force MH-60G Pave Hawk is $10.2 million.

Variants

File:CBP Air.jpg

US Customs and Border Protection Blackhawk

LA County Fire Department's S-70A Firehawk during a water drop demonstration at Station 129 in Lancaster, California

H-60

UH-60 Black Hawk: The basic military utility helicopter used by the US Army.

SH-60 Seahawk: US Navy variant for search and rescue, maritime patrol, ASW, all-weather and day/night.

HH-60 Pave Hawk: USAF heli-rescue variant for search and rescue, MEDEVAC, on day and night operations.

MH-60 "Knighthawk": US Navy medium-heavy lift helicopter.

HH-60 Jayhawk: United States Coast Guard variant for maritime patrol, interdiction, and search and rescue

VH-60 Presidential Hawk: The US Presidential transport helicopter, Marine One.

S-70

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

S-70A Black Hawk: Military model for the export market.
- S-70A Firehawk: Firefighting variant of the UH-60L. Tank system designed and built by 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-70C Firehawk: Commercial variant
S-70i Black Hawk: International military version

Derivatives

Sikorsky S-92 - Civilian medium-lift derivative of the Black Hawk.
- H-92 Superhawk - Military version of the S-92.
- CH-148 Cyclone - Version of the H-92 for the Canadian Forces.

Operators

Non-military operators

Argentina

Presidental Air Group (Presidencia de la Nacion Argentina) received 1 S-70A-30.^[1]

Hong Kong

Government Flying Service (3 S-70A retired from service in 2002)

United States

Specifications (Sikorsky S-70i)

Source:^[2]

Crew: 2
Capacity, internal: 14-17 seats/11 troops/4 stretchers
Capacity, external using a cargo hook: 4,072 kg (9,000 lb)
Length: 19.76 m (64 ft 10 in)
Width: 2.96 m (9 ft 8.6 in)
Wheelbase: 8.82 m (25 ft 11 in)
Rotor diameter: 16.36 m (53 ft 8 in)
Height: 5.33 m (17 ft 6 in)
Empty weight: 5347 kg (11,790 lb)
Max takeoff weight, gross weight: 9,997 kg (22,000 lb)
Max takeoff weight, gross weight external load: 10,600 kg (23,370 lb)
Internal Fuel: 1,360 L
Auxiliary Fuel: 2x 700L tanks internally in the cabin; and 1,705 L (450 US gal) tank on each inboard pylon and an 872 L (230 US gal) tank on each outboard pylon of the External Stores Support System (ESSS) stub wings, or 1,705 L (450 US gal) tank on each pylon of the External Tank System (ETS)
Powerplant: 2× General Electric T700-GE-701C turboshaft, 1,409 kW (1,890 shp) each at 0.462 Specific fuel consumption ^[3]

Performance

Maximum speed: 361 km/h (195 knots, 224 mph)
Maximum speed: 276 km/h (149 knots, 171 mph)
Range: 463 km, 288 mi, 250 NM (20 min reserve)
Service ceiling: 4,021 m (13,200 ft)
Hover ceiling, Out of Ground Effect (OGE): 1,311 m (4,300 ft)
Hover ceiling, In of Ground Effect (IGE): 2,743 m (9,000 ft)
Maximum rate of climb: 11.43 m/min (2,250 ft/m)

Armament ^[4]

Missiles: anti-submarine and/or Air to surface missiles (depends on version), 2x doorgun (can mount 7.62mm or .50-calibre machine guns in the windows)

References

^ Leoni 2007, pp. 248, 313–314.
^ S70-061_IBH_SS.pdf sikorsky.com
^ "General Electric T700C".
^ "Black Hawk".

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

External links

[1] Leoni 2007, pp. 248, 313–314.

[SIKHELI-2] S70-061_IBH_SS.pdf sikorsky.com

[T700C-3] "General Electric T700C".

[ARMYTECH-4] "Black Hawk".

[1]

[2]

[3]

[4]

@@ Line 164: / Line 164: @@
 * [http://www.sikorsky.com/sik/products/military/black_hawk/index.asp S-70 Black Hawk family page at Sikorsky.com]
 * [http://www.sikorsky.com/details/0,9602,CLI1_DIV69_ETI264,00.html S-70 Seahawk family page at Sikorsky.com]
+* [http://www.sikorsky.com/Products/Product+Details/Model+Family+Details/Model+Details?provcmid=bfa955f4a9d98110VgnVCM1000001382000aRCRD&mofvcmid=57aaebb600e98110VgnVCM1000001382000aRCRD&mofid=47aaebb600e98110VgnVCM1000001382000a____&movcmid=41c669a3a73a8110VgnVCM1000001382000aRCRD&moid=31c669a3a73a8110VgnVCM1000001382000a____ S-70i  page at Sikorsky.com]
-* [http://www.sikorsky.com/sik/products/military/black_hawk/s70i.asp S-70i  page at Sikorsky.com]
 * [http://www.centennialofflight.gov/essay/Rotary/Black_Hawk/HE16.htm Sikorsky UH-60/S-70 Black Hawk Family page on CentennialofFlight.gov]
 *[http://www.faqs.org/docs/air/avs70_1.html Sikorsky S-70 Black Hawk] at FAQS.org

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-22/23/24/25/26/27 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 P2S 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-73 S-74 S-75 S-76 S-80 S-92 S-95 S-97 S-100 S-102 S-103 S-300 S-333 S-434
Helicopters (military designations)	SH-3 Sea King HH-3E/F R-4 H-5 H-6 H-18 H-19 Chickasaw H-34 Choctaw CH-37 Mojave XH-39 HH-52A Seaguard CH-53 Sea Stallion CH-53E Super Stallion CH-53K King Stallion MH-53 CH-54 Tarhe UH-60 Black Hawk HH-60G Pave Hawk HH-60J/MH-60T MH-60R/S Seahawk SH-60B/F Seahawk H-60J/K VH-60 RAH-66 Comanche VH-92 Patriot CH-124 Sea King CH-148 Cyclone HLH
Experimental aircraft	Cypher/Cypher II Firefly Raider Raider X SB-1 X2 XBLR-3 XV-2

v t e Aviation lists
General	Aircraft manufacturers civil Aircraft engines manufacturers Flight test centres‎ Test pilot schools Airlines Defunct airlines Helicopter airlines Airports Aerobatic teams Civil Aviation Authorities Gliders Museums Registration prefixes Jet airliners Rotorcraft manufacturers Timeline
Military	Air forces Experimental Missiles UAVs Weapons
Accidents / incidents	Commercial airliners by location Fatalities by death toll General aviation Military By registration
Records	Airspeed Altitude Distance Endurance Firsts Large Most-produced aircraft Most-produced rotorcraft