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Bell AH-1Z Viper

United States (2010)
Picture of Bell AH-1Z Viper Dedicated Twin-Seat, Twin-Engine Attack Helicopter

The Bell AH-1Z Viper is the ultimate form of the original Vietnam-era AH-1 HueyCobra attack helicopter.


Detailing the development and operational history of the Bell AH-1Z Viper Dedicated Twin-Seat, Twin-Engine Attack Helicopter.  Entry last updated on 7/12/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com

The AH-1Z "Viper" is the latest and most potent form of the Vietnam War-era AH-1 Cobra helicopter debuted in the late 1960s. During development of the single-engine AH-1 for the United States Army, the United States Marine Corps USMC expressed interest in a twin-engine arrangement of the same attack platform which gave rise to the AH-1J "SeaCobra" offshoot introduced in 1971. The line ultimately begat an entire family of twin-engine attack platforms all related to the original AH-1 with over 1,270 SeaCobras, and the related SuperCobra, produced.

The Viper form represents an extension of the AH-1W SuperCobra line for the USMC, intending to keep the product a viable battlefield component into the next several decades. The AH-1Z includes a composite four-blade main rotor and four-blade tail rotor assemblies (bearingless) driven by 2 x General Electric T700 series turboshaft engines. Performance is enhanced as a result and the added power provides a higher operating weight than in previous Cobra iterations. Many of its onboard systems have been updated and some all-new equipment has been fitted for improved battlefield survivability and situational awareness. The cockpits are now dominated by a pair of Rockwell Collins LCDs and allows for the helicopter to be piloted from either seat. All pertinent mission parameters are showcased through the color displays. A digital 3D map allows for improved navigation. One of the key additions to the Cobra line is use of Helmet Mounted Displays (HMDs) manufactured by BAe Systems (as the "Striker"). The helmets are also used to showcase mission parameters, flight data, and the like as well as being linked to the onboard weapons system for target cueing. The wingstubs have been extended and offer all-modern support for supported USN/USMC ordnance including guided and precision weaponry.

First flight of the AH-1W was on December 8th, 2000 and three prototypes were evaluated into 2003. The USMC marked some 180 AH-1Ws for conversion to the newer AH-1Z standard with the initial production models received in 2005. Some 28 examples have been delivered to date (2014) with the final airframes expected prior to 2019. During 2008, production was modified to include the final 40 helicopters as "new build" models (and not conversions of existing airframes) while and an add-on order for the USMC followed in September of that year to bring its total procurement to 189.

As finalized, the AH-1Z is outfitted with 2 x General Electric T700-GE-401C turboshaft engines developing 1,800 shaft horsepower each. Performance numbers include a maximum speed of 255 miles per hour, a range out to 425 miles, a service ceiling of over 20,000 feet, and a rate-of-climb of 2,800 feet per minute.

The helicopter continues the slim profile appearance established by the original AH-1 Cobra of the Vietnam War years. The tandem-seat cockpit seats the pilot in the rear with the weapons officer at front. The tail rotor unit is set to the portside unlike the starboard-side facing of the original Cobra and the follow-up SuperCobra. The undercarriage is of the fixed skid arrangement as in the orignal. The wingstubs feature three hardpoints apiece (six total) and can mount the AGM-114 Hellfire anti-tank missile, the AIM-9 Sidewinder air-to-air missile, and the 2.75" Hydra 70 rocket pod in a seven- or nineteen-shot count. The standard armament remains the 20mm M197 three-barreled Gatling-style cannon in the A/A49E powered chin turret. Fire control is assisted through the Lockheed Martin/Northrop Grumman AN/APG78 "Longbow" radar system.

The AH-1Z "Viper" was formally introduced during 2010. For a short time, the helicopter was under consideration by the government of South Korea as its next standard attack helicopter until the decision was reached in 2013 to pursue the AH-64E Apache instead.

Any available statistics for the Bell AH-1Z Viper Dedicated Twin-Seat, Twin-Engine Attack Helicopter are showcased in the areas immediately below. Categories include basic specifications covering country-of-origin, operational status, manufacture(s) and total quantitative production. Other qualities showcased are related to structural values (namely dimensions), installed power and standard day performance figures, installed or proposed armament and mission equipment (if any), global users (from A-to-Z) and series model variants (if any).




  Program Updates  


April 2016 - It was announced that the nation of Pakistan had ordered nine AH-1Z Viper helicopters along with fuel kits. The order includes the AGM-114R "Hellfire II" series anti-tank missile. The helicopters are expected to be ready for delivery before the end of 2018.

May 2018 - Bahrain is the latest adopter of the AH-1Z attack helicopter platform. In a deal approved by the United States under the Foreign Military Sales banner in early May, the gulf state will receive a fleet of twelve helicopters including support and various associated munitions (like the Advanced Precision Kill Weapon Systems II guided rockets and AGM-114 "Hellfire" anti-tank missiles). Bahrain currently operates an aging fleet of some twenty-two late-model AH-1 Cobras.






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 300mph
Lo: 150mph
    This entry's maximum listed speed (255mph).

    Graph average of 225 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Bell AH-1Z Viper's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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Pie graph section
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Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
52
52


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
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Origin: United States
Year: 2010
Type: Dedicated Twin-Seat, Twin-Engine Attack Helicopter
Manufacturer(s): Bell Helicopter - USA
Production: 52
Status: Active, In-Service
Global Operators:
Bahrain (ordered); Pakistan (ordered); United States
Historical Commitments / Honors:

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.
Measurements and Weights icon
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the Bell AH-1Z Viper model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
2


Dimension
LENGTH


Feet
58.40 ft


Meters
17.8 m


Dimension
WIDTH


Feet
47.90 ft


Meters
14.6 m


Dimension
HEIGHT


Feet
14.34 ft


Meters
4.37 m


Weight
EMPTY


Pounds
12,302 lb


Kilograms
5,580 kg


Weight
LOADED


Pounds
18,519 lb


Kilograms
8,400 kg

Engine icon
Installed Power - Standard Day Performance:
2 x General Electric T700-GE-401C turboshaft engines developing 1,800 shaft horsepower to four-blade main rotor and four-blade tail rotor.

Performance
SPEED


Miles-per-Hour
255 mph


Kilometers-per-Hour
410 kph


Knots
221 kts


Performance
RANGE


Miles
264 mi


Kilometers
425 km


Nautical Miles
229 nm


Performance
CEILING


Feet
19,685 ft


Meters
6,000 m


Miles
3.73 mi


Performance
CLIMB RATE


Feet-per-Minute
2,790 ft/min


Meters-per-Minute
850 m/min

Supported Weapon Systems:

Graphical image of an air-to-air missile weapon
Graphical image of a short-range air-to-air missile
Graphical image of an aircraft Gatling-style rotating gun
Graphical image of an aircrat automatic cannon
Graphical image of an aircraft air-to-surface missile
Graphical image of an aircraft anti-tank guided missile
Graphical image of an aircraft rocket pod
Armament - Hardpoints (6):

STANDARD:
1 x 20mm M196 three-barreled Gatling-style cannon in powered chin turret.

OPTIONAL:
Six hardpoints on wingstubs for mixed armament including AGM-114 Hellfire Anti-Tank Guided Missiles (ATGMs), air-to-surface missiles, AIM-9 Sidewinder air-to-air missiles, and seven- or nineteen-shot 2.75" Hydra 70 rocket pods.
Variants: Series Model Variants
• AH-1Z "Viper" - Base Series Designation