CH-46"海騎士"運(yùn)輸直升機(jī)(Sea Knight)首飛于1958年，正式服役于美國海軍則在1960年.擔(dān)任運(yùn)輸物資人員等任務(wù).雖然并非是特種作戰(zhàn)飛機(jī)卻經(jīng)常執(zhí)行一些特種行動(dòng).

　　CH-46直升機(jī)是美國海軍陸戰(zhàn)隊(duì)最主要的戰(zhàn)斗攻擊直升機(jī)之一，這種直升機(jī)外形有點(diǎn)像公共汽車，雙螺旋槳，海軍陸戰(zhàn)隊(duì)主要用它把部隊(duì)從艦上運(yùn)到岸上，或把部隊(duì)從營地運(yùn)到作戰(zhàn)前沿位置。而美國海軍則用這種直升機(jī)把裝備運(yùn)到艦上或執(zhí)行搜索與救援任務(wù)。

　　CH-46直升機(jī)由美國“波音公司”制造，1964年服役，使得它比現(xiàn)在駕駛它的大部分飛行員年齡都要大。但在整個(gè)服役期內(nèi)，CH-46直升機(jī)問題多多，命運(yùn)時(shí)起時(shí)落。由于時(shí)間太長，老是出現(xiàn)一些故障。由于故事頻繁，加上又不能棄之不用，所以美軍只得經(jīng)常進(jìn)行檢查，而且海軍陸戰(zhàn)隊(duì)下令每架CH-46每次只能載12人而不是原來規(guī)定的25人，所以現(xiàn)在每小時(shí)飛行的代價(jià)比以前上升了75%。

　　在越南戰(zhàn)爭期間，這種直升機(jī)發(fā)揮了極大的作用。CH-46初次服役是在越南戰(zhàn)爭時(shí)期，一開始用于從海軍艦只上向陸上運(yùn)送部隊(duì)和貨物，或者從陸上送到艦上，另外還執(zhí)行了成千上萬次救護(hù)受傷陸戰(zhàn)隊(duì)員的任務(wù)。自從越戰(zhàn)以來，CH-46幾乎參加了所有美軍大型的軍事行動(dòng)，包括2001年的阿富汗戰(zhàn)爭，以及正在進(jìn)行的對伊戰(zhàn)爭。

　　性能參數(shù)：

　　機(jī)組成員：4名

　　具備初始作戰(zhàn)能力的時(shí)間：1964年

　　擁有數(shù)量：324架

　　機(jī)長：13.7米

　　旋翼直徑：15.31米

　　起飛重量：11032.2公斤

　　最大速度：268.25公里/小時(shí)

　　航程：176公里(單程)

　　續(xù)航時(shí)間：2小時(shí)(CH-46D)

　　1.75小時(shí)(CH—46E)

　　武器：2門MZ(25.4毫米)或M60(70毫米)機(jī)炮(只裝備CH—46E飛機(jī))

　　Mission: The mission of the CH-46E Sea Knight helicopter in a Marine Medium Helicopter (HMM) squadron is to provide all-weather, day/night, night vision goggle (NVG) assault transport of combat troops, supplies, and equipment during amphibious and subsequent operations ashore. Troop assault is the primary function and the movement of supplies and equipment is secondary. Additional tasks are: combat and assault support for evacuation operations and other maritime special operations; over-water search and rescue augmentation; support for mobile forward refueling and rearming points; aeromedical evacuation of casualties from the field to suitable medical facilities.

　　Background:The CH-46 Sea Knight was first procured in 1964 to meet the medium-lift requirements of the Marine Corps in Viet Nam with a program buy of 600 aircraft. The aircraft has served the Marine Corps in all combat and peacetime environments. However, normal airframe operational and attrition rates have taken the assets to the point where a medium lift replacement is required. The safety and capability upgrades are interim measures to allow continued safe and effective operation of the Sea Knight fleet until a suitable replacement is fielded.

　　Primary function: Medium lift assault helicopter

　　Manufacturer: Boeing Vertol Company

　　Power plant: (2) GE-T58-16 engines

　　Thrust:

　　Burst: 1870 shaft horsepower (SHP)

　　Continuous: 1770 SHP

　　Length:

　　Rotors unfolded: 84 feet, 4 inches (25.69 meters)

　　Rotors folded: 45 feet, 7.5 inches (13.89 meters)

　　Width:

　　Rotors unfolded: 51 feet (15.54 meters)

　　Rotors folded: 14 feet, 9 inches (4.49 meters)

　　Height:16 feet, 8 inches (5.08 meters)

　　Maximum takeoff weight:24,300 pounds (11,032 kilograms)

　　Range:132 nautical miles (151.8 miles) for an assault mission

　　Speed: 145 knots (166.75 miles per hour)

　　Ceiling: 10,000 feet (+)

　　Crew:

　　Normal: 4 - pilot, copilot, crew chief, and 1st mechanic

　　Combat: 5 - pilot, copilot, crew chief, and 2 aerial gunners

　　Payload:

　　Combat: maximum of 14 troops with aerial gunners

　　Medical evacuation: 15 litters and 2 attendants

　　Cargo: maximum of 4,000 pound (2270 kilograms) external load

　　Introduction date:January 1978

　　Unit Replacement Cost: No current medium-lift replacement, would not replace.

　　Inventory: 239

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