Chapter 35 US Navy Trimaran and Helicopters

Bell AH-1Z Viper

Description

The Bell AH-1Z Viper is an American twin-engine attack helicopter, based on the AH-1W SuperCobra, that was developed for the United States Marine Corps as part of the H-1 upgrade program. The AH-1Z features a four-blade, bearingless, composite main rotor system, uprated transmission, and a new target sighting system. Wikipedia

Top speed: 411 km/h

Range: 685 km

Weight: 5,580 kg

Unit cost: 27,000,000–31,000,000 USD (2011)

First flight: 8 December 2000

Engine type: General Electric T700

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Sikorsky UH-60 Black Hawk

Medium utility helicopter

Description

The Sikorsky UH-60 Black Hawk is a four-blade, twin-engine, medium-lift utility helicopter manufactured by Sikorsky Aircraft. Sikorsky submitted the S-70 design for the United States Army’s Utility Tactical Transport Aircraft System competition in 1972. Wikipedia

Top speed: 357 km/h

Range: 583 km

Unit cost: 21,300,000–21,300,000 USD (2012)

Engine type: General Electric T700

Number built: About 4,000

Variants: Sikorsky SH-60 Seahawk; Sikorsky HH-60 Pave Hawk; Sikorsky HH-60 Jayhawk; Mitsubishi H-60

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