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The Bell UH-1 Iroquois is a military helicopter powered by a single, turboshaft engine, with a two-bladed main rotor and tail rotor. The helicopter was developed by Bell Helicopter to meet the United States Army's requirement for a medical evacuation and utility helicopter in 1952, and first flew on 20 October 1956. Ordered into production in March 1960, the UH-1 was the first turbine-powered helicopter to enter production for the United States military, and more than 16,000 have been produced worldwide.

HH-60A: Prototype for the HH-60D rescue helicopter. A modified UH-60A primarily designed for combat search and rescue. It is equipped with a rescue hoist with a 200 ft (60.96 m) cable that has a 600 lb (270 kg) lift capability, and a retractable in-flight refueling probe.

 

General characteristics

Crew: 4 (2 pilots, flight engineer, gunner)

The Bell 206 is a family of two-bladed, single- or twin-engine helicopters, manufactured by Bell Helicopter at its Mirabel, Quebec plant. Originally developed as the Bell YOH-4 for the United States Army's Light Observation Helicopter program, the 206 failed to be selected. Bell redesigned the airframe and successfully marketed the aircraft commercially as the five-place Bell 206A JetRanger. The new design was eventually selected by the Army as the OH-58 Kiowa.

The Sikorsky S-67 Blackhawk was a private-venture, prototype attack helicopter built in 1970 with Sikorsky Aircraft R&D funds. A tandem, two-seat aircraft designed around the dynamic drive and rotor systems of the Sikorsky S-61, it was designed to serve as an attack helicopter or to transport up to 8 troops into combat.

 

Design and development

S-67 development

The Bell AH-1 SuperCobra is a twin-engine attack helicopter based on the US Army's AH-1 Cobra. The twin Cobra family includes the AH-1J SeaCobra, the AH-1T Improved SeaCobra, and the AH-1W SuperCobra. The AH-1W is the backbone of the United States Marine Corps's attack helicopter fleet, but will be replaced in service by the Bell AH-1Z Viper upgrade.

 

Design and development

The Bell AH-1 Cobra is a two-bladed, single engine attack helicopter manufactured by Bell Helicopter .  It shares a common engine , transmission and rotor system with the older UH-1 Iroquois.  The AH-1 is also referred to as the HueyCobra or Snake.

The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem rotor transport helicopter, used by the United States Marine Corps (USMC) to provide all-weather, day-or-night assault transport of combat troops, supplies and equipment.

The Boeing CH-47 Chinook is an American twin-engine, tandem rotor heavy-lift helicopter.  Its top speed of 170 knots (196 mph, 315 km/h) is faster than contemporary utility and attack helicopters of the 1960s.  It is one of the few aircraft of that era, such as the C-130 Hercules and the UH-1 Iroquois, that is still in production and front line service with over 1,179 built to date.  Its primary roles include troop movement, artillery emplacement and battlefield resupply.  It has a wide loading ramp at the rear of the fuselage and three external-cargo hooks.

The Sikorsky CH-53E Super Stallion is the largest and heaviest helicopter in the United States military.  It was developed from the CH-53 Sea Stallion, mainly by adding a third engine, a seventh blade to the main rotor and canting the tail rotor 20 degrees.  Sailors commonly refer to the Super Stallion as the "Hurricane Maker" because of the downwash the helicopter generates.  It was built by Sikorsky Aircraft for the United States Marine Corps.  The less common MH-53E Sea Dragon fills the United States Navy 's need for long range mine sweeping or Airborne Mine

The Bell 207 Sioux Scout was a modified Bell 47 helicopter, developed by Bell Helicopter, under contract from the United States Army , as a proof-of-concept demonstrator for Bell's D-255 helicopter gunship design.  The Sioux Scout featured a tandem cockpit, stub wings, and a chin-mounted gun turret. 

 

Design and development

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