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Bell AH-1J SeaCobra

United States (1970)
Picture of Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter
Picture of Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter Picture of Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter
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The Bell AH-1 SeaCobra became a USMC derivative of the original U.S. Army AH-1 HueyCobra attack helicopter with changes implemented to suit the service.


Detailing the development and operational history of the Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter.  Entry last updated on 6/14/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com

In the latter part of the 1960s, the United States Marine Corps (USMC) had enough interest in the new U.S. Army attack helicopter - the single-engine, two-seat Bell AH-1 "HueyCobra" - that it commissioned for a more capable twin-engine version for maritime use. The Army's AH-1G model was selected as the starting point with the most prominent change being 2 x PT6T-3 turboshafts coupled to a combining transmission system for 1,800 total shaft horsepower. The engine pairing was collectively recognized as the "Turbo Twin-Pac" and formally designated the Pratt & Whitney Canada T400-CP-400). Additional changes lay in the chin armament which added a 20mm three-barreled Gatling-style cannon in a General Electric M97 turret while, by and large, the helicopter remained faithful to the original U.S. Army offering.

The U.S. Army's AH-1 itself held origins in the famous Bell UH-1 "Huey" series transport helicopter to which the AH-1 borrowed much from the earlier Bell product though extensively modified for the dedicated attack role. The attack helicopter was used as a replacement for the several make-shift gunships in service with American forces during the Vietnam War (1955-1975). The USMC variant of the AH-1G was specifically modified to include the dual-engine layout for increased survivability, particularly in the maritime (over-water) environment that the service's helicopters were expected to operate in. The branch ordered the AH-1J through a batch of 49 helicopters in 1968.

The powerplant drove a two-blade main rotor and two-blade tail rotor, the latter set to the starboard side of the tail fin and driven by a shaft housed in the tail boom. The fuselage retained the same slim head-on profile as the AH-1G and seated its crew of two in a standard tandem arrangement - the pilot at the rear and the weapons officer/co-pilot in front. Performance included a never-exceed-speed of 220 miles per hour, a maximum speed of 175 miles per hour, a range out to 560 miles, a service ceiling up to 10,500 feet, and a rate-of-climb of 1,090 feet per minute.

The USMC introduced their "SeaCobra" during September of 1970 and first actions centered around the American involvement in Vietnam in the coastal "hunter-killer" role. The helicopters were primarily armed through multi-shot rocket pods slung under their wingstubs which held two hardpoints apiece. The AH-1J SeaCobra was then offered in an export guise as the AH-1J "International" of which Iran became an operator of.

In 1974, a new version was ordered as the AH-1T "Improved SeaCobra". This model incorporated a new main rotor (from the Bell Model 214), upgraded gearbox, and lengthened fuselage and tailboom. The mark also included support for the Hughes BGM-71A TOW anti-tank missile but the weight added by the changes led to a decrease in performance. This forced Bell to offer 2 x General Electric T700-GE-401 turboshaft engines in 1980 and this, with other modifications including broadened weapons support (Hellfire ATGM, AIM-9 Sidewinder AAM) and day/night capabilities, led to the modernized AH-1W "SuperCobra" (the "Whiskey Cobra") mark. The AH-1W itself came to life as a re-engined AH-1T intended for sale to Iran.

The AH-1J was ultimately supplanted in USMC service by the AH-1W. Twin-engined Cobras saw combat service during the 1991 Gulf War in the tank-killing role as well as the American-led invasions of Afghanistan and Iraq during the 2000s. While the AH-1W remains the standard attack helicopter for the USMC, it is being replaced by the incoming AH-1Z "Viper" mark ("Zulu Cobra") as of this writing (2014) bringing with it improved avionics, uprated engines, and a four-blade main rotor among other changes.


Picture of the Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter
Picture of the Bell AH-1J SeaCobra Dedicated Two-Seat Attack Helicopter



Any available statistics for the Bell AH-1J SeaCobra Dedicated Two-Seat 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).






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: 200mph
Lo: 100mph
    This entry's maximum listed speed (175mph).

    Graph average of 150 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-1J SeaCobra's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
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
251
251


  * Commercial Market High belongs to Cessna 172.

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


Altitude Visualization
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  Compare this entry against other aircraft using our Comparison Tool  
National Flag Graphic
Origin: United States
Year: 1970
Type: Dedicated Two-Seat Attack Helicopter
Manufacturer(s): Bell Helicopter Textron - USA
Production: 251
Status: Active, Limited Service
Global Operators:
Iran; 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-1J SeaCobra model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
2


Dimension
LENGTH


Feet
53.35 ft


Meters
16.26 m


Dimension
WIDTH


Feet
43.96 ft


Meters
13.4 m


Dimension
HEIGHT


Feet
13.71 ft


Meters
4.18 m


Weight
EMPTY


Pounds
6,614 lb


Kilograms
3,000 kg


Weight
LOADED


Pounds
10,009 lb


Kilograms
4,540 kg

Engine icon
Installed Power - Standard Day Performance:
1 x Pratt & Whitney Canada T400-CP-400 (PT6T-3 "Twin-Pac", limited to 1,530shp) turboshaft engine developing 1,800 shaft horsepower to two-bladed main rotor and two-bladed tail rotor.

Performance
SPEED


Miles-per-Hour
175 mph


Kilometers-per-Hour
282 kph


Knots
152 kts


Performance
RANGE


Miles
357 mi


Kilometers
575 km


Nautical Miles
310 nm


Performance
CEILING


Feet
10,548 ft


Meters
3,215 m


Miles
2.00 mi


Performance
CLIMB RATE


Feet-per-Minute
1,090 ft/min


Meters-per-Minute
332 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 aircraft air-to-surface missile
Graphical image of an aircraft anti-tank guided missile
Graphical image of an aircraft rocket pod
Armament - Hardpoints (4):

STANDARD:
1 x 20mm M197 triple-barrel Gatling-style gun in General Electric electric-powered chin turret.

OPTIONAL (Across four hardpoints under wingstubs):
2.75" Mk 40 / "Hydra" rocket pods (14-shot pods)
5" "Zuni" rocket pods (4-shot pods)
Hughes BGM-71A TOW Anti-Tank (AT) wire-guided air-to-surface missiles.
AIM-9M Sidewinder short-range air-to-air missiles
Variants: Series Model Variants
• AH-1J "SeaCobra" - Base Series Designation; based on the U.S. Army AH-1G airframe; service entry in 1970.
• AH-1J "International" - Export model of the AH-1J
• AH-1T "Improved SeaCobra" - New main rotor; upgraded gearbox; lengthened fuselage and tailboom; BGM-71A TOW AT missile support.