Bell Helicopters
AH-1Z/W Viper Cobra

The Bell AH-1Z Viper is a twin-engine attack helicopter, based on the AH-1W SuperCobra, designed and produced by the American aerospace manufacturer Bell Helicopter. It is one of the latest members of the prolific Bell Huey family. It is often called "Zulu Cobra", based on the military phonetic alphabet pronunciation of its variant letter

The AH-1Z was developed during the 1990s and 2000s as a part of the H-1 upgrade program on behalf of the United States Marine Corps (USMC). It is essentially a modernisation of the service's existing AH-1Ws, and was originally intended to be a rebuild program before subsequent orders were made for new-build helicopters instead. The AH-1Z and Bell UH-1Y Venom utility helicopter share a common tailboom, engines, rotor system, drivetrain, avionics architecture, software, controls and displays for over 84% identical components. Furthermore, it features a four-blade, bearingless, composite main rotor system, uprated transmission, and a new target sighting system amongst other improvements. On 8 December 2000, the AH-1Z conducted its maiden flight; low-rate initial production was launched in October 2003.

The Bell AH-1Z Viper is an attack helicopter derived from the earlier Bell AH-1 SuperCobra. When contrasted against its predecessor, it incorporates various improvements and advances, including new rotor technology, upgraded military avionics, updated weapons systems, and electro-optical sensors in an integrated weapons platform. Amongst other advantages provided by these changes, it has improved survivability and can locate targets at longer ranges and also attack them using precision weapons. The airframe was extensively redesigned to maximise crashworthiness; measures include energy-absorbing landing gear, fuel vapor inerting systems, self-sealing fuel tanks, energy-attenuating crashworthy seating, and a mass retention design approach applied to many major components. Wiki Link