CH-46 Sea Knight

Product Type:

Medium-Lift Transport Helicopter

Using Service (US):

Marine Corps (USMC)

Program Status:

No more new aircraft will be procured. Focus is on modifications and sustainment.

Prime Contractor:

Airframe: The Boeing Company
Engines: General Electric Co.

The CH-46 Sea Knight

About the CH-46:





The Boeing CH-46/HH-46 Sea Knight is a medium-lift tandem rotor cargo helicopter used by the U.S. Marine Corps to provide all-weather, day-or-night transport of combat troops, supplies and equipment. The CH-46 was first purchased in 1964 to meet the medium-lift requirements of the Marine Corps in Vietnam. The Sea Knight can carry up to 25 combat equipped troops. The helicopter is powered by two General Electric T58-GE-16A turboshaft engines with 1,870 shp each.

As of December 2011, the average age of Marine Corps Sea Knight heliopters is 43 years or 10,980 flight hours. The original design service life was estimated at 10,000 hours, however, it was subsequently extended to 12,500 hours in 1992 and 15,000 hours in 1996. The fleet is gradually being retired from service and replaced by the Sikorsky MH-60S Seahawk aka Knighthawk. The active inventory, as of December 2012, consists of 83 CH-46E Sea Knight and 4 HH-46E Search and Rescue (SAR) helicopters + 13 Navy Reserve CH-46Es (113 H-46 aircraft total).



Armament/Weapons:

The CH-46 Sea Knight can be equipped with two XM218 .50 caliber BMG (12.7mm) machine guns and one ramp mounted M240G 7.62mm machine gun.



Mission/Role:

The CH-46E Sea Knight helicopter provides all-weather, day-or-night assault transport of combat troops, supplies and equipment. Troop assault is the primary function and the movement of supplies and equipment is secondary. Additional tasks may be assigned such as combat support, search and rescue, support for forward refueling and rearming points, aeromedical evacuation of casualties from the field and recovery of aircraft and personnel.



FY 2013 DoD Program:

Provides targeted initiatives to remedy the top age-related safety and reliability issues engineered to address the heavy wear-and-tear effects of high-tempo Overseas Contingency Operations (OCO). Total DoD Spending in FY 2013 amounts to $2.3 million. There are no sequestration cuts for this program.



FY 2014 DoD Program:

Provides targeted initiatives to remedy the top age-related safety and reliability issues engineered to address the heavy wear-and-tear effects of high-tempo Overseas Contingency Operations (400% of planned utilization rate) on CH-46 airframes and subsystems in order to ensure safe, reliable and effective aircraft operation until all H-46 Sea Knights have been retired.

For more information, click to see the Complete FY2014 H-46 Budget.




Source: U.S. Department of Defense (DoD), The Boeing Company,
and General Electric Co.

Specifications Armament DoD Spending FY2015 Budget

Last Update: July 31, 2013.

By Joakim Kasper Oestergaard /// (jkasper@bga-aeroweb.com)

External Resources:



Boeing's CH-46 Site: Boeing CH-46 Sea Knight



YouTube: Boeing CH-46 Sea Knight | YouTube Videos



Fact Sheet: Not Available

CH-46 U.S. Defense Budget Charts:

DoD Spending on the CH-46 Sea Knight in FY 2011, FY 2012, FY 2013, FY 2014 and FY 2015
DoD Purchases of CH-46 Sea Knight Helicopters in FY 2011, FY 2012, FY 2013, FY 2014 and FY 2015
Defense Budget Data

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DoD Spending, Procurement and RDT&E: FY 2011/12/13 + Budget for FYs 2014 + 2015

DoD Defense Spending, Procurement, Modifications, Spares, and RDT&E for the CH-46 Sea Knight

Download Official U.S. Department of Defense (DoD) Budget Data:

Modification of CH-46 Helicopters (NAVY) Sequestration FY2013
Specifications

Aircraft Specifications: CH-46E Sea Knight

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Primary Function: Assault support, cargo and search and rescue roles
Prime Contractor: Airframe: The Boeing Co.; Engines: General Electric Co.
Power Plant: 2x General Electric T58-GE-16A turboshaft engines with 1,870 shp (each engine)
Rotor Diameter: 51 ft (16.0 m)
Length: Fuselage: 45 ft 8 in (13.9 m)
Height: 16 ft 9 in (5.1 m)
Width: Fuselage: 7 ft 3 in (2.2 m)
Weight (Empty): 15,537 lbs (7,048 kg)
Maximum Takeoff Weight (MTOW): 24,300 lbs (11,000 kg)
Capacity: 25 combat equipped troops
Speed: Max. 145 kts/165 mph (265 km/h)
Rate of Climb: 2,045 ft/min (10.39 m/s)
Service Ceiling: 10,000 ft (3,048 m)
Range: Ferry: 360 nm/414 miles (667 km)
Combat Radius: 160 nm/184 miles (296 km)
Armament/Weapons: 2x door mounted XM218 .50 BMG (12.7mm) machine guns (optional) and
1x ramp mounted M240G 7.62mm machine gun (optional)
Crew: Four
Deployed: 1964
Inventory: Total: 83; Active CH-46E: 66; Active HH-46E: 4; Reserve CH-46E: 13

Defense Program

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