Boeing Vertol CH-46 Sea Knight Medium-Lift Tandem Rotor Transport Helicopter (1964)
The CH-46 is to the United States Marine Corps what the CH-47 is to the United States Army.
The CH-46 utilizes two Lycoming turboshaft engines to drive the powerful main rotor blades. Crew accommodations amount to two or three standard personnel with spacing in the cabin for an additional 15-25 troops and 15 stretcher patients. The Sea Knight, like its Chinook counterpart, can also carry external sling loads if need be.
The CH-46 was designed from the Model 107 which was actually evaluated by the US Army through three YCH-1A designated prototypes. Though the Army elected to take the larger C-47, which would become the Chinook, the US Marine Corps accepted their CH-46's as the Sea Knight in 1961 to replace their aging UH-34 series. By 1964, deliveries were in full swing and the CH-46 entered service. Along with USMC use, the US Navy also procured several Sea Knights for sea-borne ship replenishment duty.
The CH-47 saw several variants derived from initial models and service experience, each differing in avionics upgrades, subtle redesigns and powerplant changes. Canada accepted the CH-46 as the "Voyageur" and the "Labrador" to fill roles in search and rescue and transport respectively. Additionally, the CH-46 has appeared with Japanese forces as the KV 107 model series in various roles and with Sweden as the HKP-4 series. Text ©2003-2013 www.MilitaryFactory.com • All Rights Reserved • No Reproduction Permitted
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Specifications for the
Boeing Vertol CH-46 Sea Knight
Medium-Lift Tandem Rotor Transport Helicopter
Country of Origin: United States
Manufacturer: Boeing Vertol - USA
Initial Year of Service: 1964
Production: 524
Focus Model: Boeing Vertol CH-46E Sea Knight
Crew: 3 + 25
Length: 44.82ft (13.66m)
Width: 0.00ft (0.00m)
Height: 16.70ft (5.09m)
Weight (Empty): 11,585lbs (5,255kg)
Weight (MTOW): 24,299lbs (11,022kg)
Powerplant: 2 x General Electric T58-GE-16 turboshaft engines generating 1,870shp and driving tandem three-blade rotor systems.
Maximum Speed: 166mph (267kmh; 144kts)
Maximum Range: 690miles (1,110km)
Service Ceiling: 9,498ft (2,895m; 1.8miles)
Rate-of-Climb: 1,715 feet per minute (523m/min)
Hardpoints: 0
Armament Suite:
None.
Variants:
Model 107 - Vertol Prototype Model; fitted with 2 x Lycoming T53 turboshaft engines.
YCH-1A - US Army Prototype Evaluation Model designation of which three were produced.
HRB-1 - Initial Production Designation for US Marine Corps, later redesignated to CH-46 after 1962.
CH-46A - Initial Production Designation from HRB-1 after 1962; 107 produced for US Marine Corps usage; fitted with General Electric T58-GE-8 turboshaft engines.
UH-46A - Similar to the CH-46A but for US Navy use; 14 such delivered.
CH-46D - USMC model fitted with T-58-GE-10 powerplants.
UH-46D - US Navy model similar to CH-46D USMC model.
CH-46E - Upgraded CH-46D and CH-46F models; fitted with T58-GE-16 powerplants; improved crew survivability features.
CH-46F - Improved avionics
CH-113 "Labrador" - Canadian CH-46A search and rescue models.
CH-113A "Voyageur" - Canadian CH-46A transport models.
HKP-4 - Swedish variant fitted with Rolls-Royce powerplants.
KV 107 - Japan license-produced Model 107 series of various role types.
Operators: Canada; Japan; Sweden; Saudi Arabia; Sweden; Thailand; United States
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