The UH-46D Sea Knight is a twin-turbine, tandem-rotor transport helicopter used by the U.S. Navy and Marines. The HU46D carries out the following mission types: vertical replenishment (VERTREP), vertical on-board delivery (VOD), search and rescue (SAR), medical evacuation (MEDEVAC), combat support, special-weapons carriage, special warfare, combat assault, general utility, and movement of troops, ammunition, and equipment on the battlefield.
Capabilities The UH-46D possesses the following capabilities (at 20,800 pounds [9,455 kg] as applicable):
Engine: two General Electric T58-GE-16 engines Cruising speed: 134 nautical mph (248 km per hour) Rate of climb: 2,045 feet per minute (625 meters per minute) Range: 365 nautical mph (676 km per hour) Seats: two Weight empty: 15,537 pounds (7,048 kg) Maximum useful load: 8,763 pounds (3,975 kg) Modification Programs Since the 1980s, Boeing has provided a series of modification and upgrade kits to modernize, increase safety, increase economy and performance, and extend the life of the 1960s-era fleet of H-46 Sea Knight helicopters.
Increased fuel-capacity kits: 49 kits to double the mission radius to 160 nm (297 km) Emergency-floatation kits: two kits create an emergency-floatation system (194 floatation mission kits and 211 floatation-provision kits) Engine-condition control kits: 442 kits provide an engine-condition control system Night-vision goggle kits: 242 night-vision goggle (NVG) kits Dynamic components upgrade kits: 421 kits replace all drive-train and rotating parts with new and (in some cases) upgraded parts
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