The Sikorsky MH-60T Jayhawk is a multi-mission, twin-engine, medium-range helicopter operated by the United States Coast Guard for search and rescue, law enforcement, military preparedness and marine environmental protection missions. Originally designated HH-60J before being upgraded and redesigned starting in 2007, the MH-60T was designed to fly a crew of four to 300 mi (483 km) offshore, hauling up to six extra people on board while remaining in place for up to 45 minutes and return to the base while maintaining adequate fuel stock. The normal cruising speed of MH-60T is 135 to 140 kn (155 to 161 mph) and the aircraft is capable of reaching 180 kn (207 mph) for short periods of time. MH-60T can fly at 140 kn (161 mph) for six to seven hours.
Selected to replace HH-3F Pelican, MH-60T is a member of the Sikorsky S-70 helicopter family and is based on the US Marine Seahawk SH-60 helicopter. Construction began in September 1986, the first flight was reached on August 8, 1989, and the HH-60J first entered the USCG service in June 1990. Production ended in 1996 after 42 helicopters were produced; The three retired SH-60F Seahawks are also re-manufactured for the MH-60T specification beginning in 2010. A total of 42 MH-60T in service with Coast Guard.
Video Sikorsky MH-60 Jayhawk
Development
Selected to replace HH-3F Pelican, HH-60J is based on the US Navy SH-60 Seahawk and a member of the Sikorsky S-70 helicopter family. Compared to its predecessor, the HH-3F, HH-60J is lighter, faster, and comes with more sophisticated electronics and more powerful engines. The HH-60J was developed in conjunction with the US Navy's HH-60H Rescue Hawk.
Sikorsky began development in September 1986 and the registration number of the 6001 aircraft reached its first flight on 8 August 1989. The first aircraft was delivered to USCG for development testing in March 1990 at NAS Patuxent River, Maryland. In March 1991, ATC Mobile, Alabama became the first USCG unit to fly HH-60J, allowing pilot instructors to prepare for pilot training. Coast Guard Air Station Elizabeth City, North Carolina is the first USCG operating unit to fly the HH-60J. Sikorsky produced 42 HH-60Js with sequential registration numbers from 6001 to 6042. Sikorsky ended production in 1996 after completing 42 contract units. Subsequently, the Coast Guard has converted three former Navy SH-60F Seahawks into MH-60T Jayhawks (registration number 6043-6045) in lieu of the shift.
MH-60T upgrade program
The USCG began converting 42 HH-60Js to MH-60Ts in January 2007. This avionics enhancement and capability is part of the USCG Integrated Deepwater System Program and will provide a glass cockpit, an enhanced electro-optical/infrared sensor system as well as a radar sensor system and use of air power capability. The use of air force packs includes both weapons to fire warnings and paralyze gunfire and armor to protect crew from light weapon fire. The MH-60T upgrade was completed in February 2014.
Maps Sikorsky MH-60 Jayhawk
Design
With a fuel capacity of 6,460 Â £ (2,930 kg), the HH-60J is designed to fly four crews to 300 mi (483 km) offshore, hauling up to six extra people on board while remaining in place for up to 45 minutes and returning to the base while maintaining adequate fuel reserves. The normal cruising speed of HH-60J is 135 kn (155 mph) up to 140 kn (161 mph) and the aircraft is capable of reaching 180 kn (207 mph) for short periods of time. HH60J can fly at 140 kn (161 mph) for six to seven hours.
The HH-60J uses NAVSTAR's Global Positioning System as its primary remote navigation aid, using Collins RCVR-3A radio to receive information simultaneously from four of the 18 satellites worldwide from the NAVSTAR system. The helicopter is usually ground-based but can be based on a 270-foot endurance Coast Guard Cutters (WMEC) or a 378 ft high-end Coast Guard Cutters (WHEC).
Jayhawk has a search/weather radar that gives his nose a distinctive look. An infrared front-turret sensor (FLIR) can be mounted under its nose. It can carry three 120 US fuel tanks (454Ã, L) with two on the port side shelf and one on the right side rack. The right side of the ship also carries a 600 lbf (2,67 kN) rescue hoist mounted above the door. Hoist has a cable of 200Ã, ft (61.0 m).
MH-60T is equipped with a 7.62 mm medium M240H machine gun and a Barrett M8250 semi-automatic rifle to shoot warnings and paralyze shots. These weapons also serve as defensive weapons.
Operational history
In 1990, HH-60J Jayhawks began to replace HH-3F Pelican and CH-3E Sea King helicopters in service with the US Coast Guard. HH-60J conducts search and rescue missions, along with other missions such as maritime patrols and drug bans. The Coast Guard cutter with their HH-60J and other helicopters secured and banned the Persian Gulf in 1991 to support Operation Desert Storm and also in 2003 for Operation Enduring Freedom.
In January 2011, the Juneau Rescue Volunteer volunteers, who worked with the Alaskan State Forces and Coast Guard Guards, rescued an injured pedestrian at Mount Ripikski, near Haines. Coast Guard helicopter MH-60 Jayhawk, sent from Sitka, transporting pedestrians to Bartlett Regional Hospital in Juneau, Alaska.
On October 29, 2012, the number Jayhawk 6031 (70-1790) was used during the offshore cruise of HMS Bounty crew during Hurricane Sandy.
Variant
- HH-60J
- Medium distance recovery helicopter. 42 units were shipped to USCG between 1990 and 1996.
- MH-60T
- Medium distance recovery helicopter. 39 live HH-60J airframes received improved avionics and operational capabilities, including armament, between 2007 and 2014. Three SH-60Fs were converted to MH-60T specifications in lieu of friction.
Operator
- United States
- United States Coast Guard
- CGAS Astoria
- CGAS Cape Cod
- Clearwater CGAS
- Elizabeth City CGAS
- CGAS Kodiak, Alaska
- CGAS San Diego
- Sitka CGAS
- CGAS Traverse City
- Coast Guard Aviation Training Center
Accident
As of July 2010, three Jayhawks have been involved in the collision, including two fatal collisions.
Specifications (HH-60J)
- Most data for HH-60J with data for MH-60T is listed below.
Data from USCG HH-60J information, Sikorsky S-70B Seahawk information, Globalsecurity. org HH-60J specifications
General characteristics
- Crew: four (pilot, co-pilot, two crew)
- Length: 64 ft 10 in (19.76m)
- Rotor diameter: 53 ft 8 in (16.36 m)
- Height: 17 ft (5.18 m)
- Empty weight: 14,500 lb (6,580 kg)
- Max. Weight takeoff: 21,884 lb (9,926 kg)
- Powerplant: 2 ÃÆ'â € "General Electric T700-GE-401C gas turbine, 1,890 shp (1,410 kW) each
Performance
- Maximum speed: 180 knots (205 mph, 333 km/h)
- Roaming speed: 140 knots (160 mph, 260 km/h)
- Range: 700 nautical miles (802 mi, 1,300 km)
- Service ceiling: 5,000 ft hovering (1,520 m)
Armament
- 1 ÃÆ'â € "0.308 in (7.62ÃÆ'â €" 51 mm) M240H machine gun is on the right door (MH-60T)
- 1 ÃÆ'â € "0.50 on (12.7ÃÆ'â €" 99 mm) Barrett M82 (MH-60T) semi-automatic rifle
See also
- US. helicopter armament subsystem
Pengembangan terkait
- Sikorsky HH-60 Pave Hawk
- Sikorsky S-70
- Sikorsky S-92
- Sikorsky SH-60 Seahawk
- Sikorsky UH-60 Black Hawk
Planes with equivalent roles, configurations, and eras
- Eurocopter HH-65 Dolphin
- MH-68 Stingray
Related list
- List of active US military aircraft
- List of rotorcraft
- Sikorsky S-70 Model List
References
External links
- MH-60T on the US Coast Guard site
- HH-60J JAYHAWK Helicopter Product Information. Sikorsky Aircraft Company
- HH-60 Jayhawk and MH-60T at globalsecurity.org
- US. Coast Guard Fielding Armed HH-65Cs, -60Js. Rotor & amp; Wing
- Modern Jayhawk Coastal Keeping Plan. VTOL.org
Source of the article : Wikipedia
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