E-2 Hawkeye

E-2 Hawkeye
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Name	E-2 Hawkeye
Caption	An E-2C Hawkeye in flight.
Type	Airborne early warning and control
Manufacturer	Grumman (now Northrop Grumman)
First flight	21 October 1960
Introduction	January 1964
Status	In service
Primary user	United States Navy
Number built	Over 300
Variants with their own articles	C-2 Greyhound

E-2 Hawkeye. The E-2 Hawkeye is a twin-turboprop, all-weather, carrier-capable airborne early warning and control (AEW&C) aircraft. Developed in the late 1950s for the United States Navy, it was the first aircraft designed from the outset for the AEW&C role, replacing earlier adaptations like the E-1 Tracer. Its distinctive rotodome houses the AN/APS-145 radar system, providing long-range surveillance, command, and control capabilities for carrier strike groups and joint forces. The Hawkeye has served as the "eyes of the fleet" for over six decades, with continuous upgrades keeping it at the forefront of battle management.

Development and design

The development of the E-2 was initiated by Grumman under a United States Navy requirement to protect fleet formations from the emerging threat of Soviet cruise missiles and high-speed bombers. The design team, led by engineers who had worked on the F-14 Tomcat project, created a high-wing aircraft with a large rotodome mounted atop the fuselage, which rotates to provide 360-degree radar coverage. Key design challenges included achieving carrier suitability with a large radar apparatus and integrating complex avionics systems like the AN/ALR-73 passive detection system. The prototype, designated the W2F-1, first flew from Grumman's facilities in Bethpage, New York, leading to the aircraft's official designation as the E-2A upon entry into service with Fleet Air Reconnaissance Squadron units.

Operational history

Entering service with the United States Navy in 1964, the E-2A first saw operational use during the Vietnam War, providing critical over-the-horizon targeting and combat air patrol control for strikes over North Vietnam. During the Cold War, Hawkeyes from carriers like the USS Enterprise (CVN-65) routinely tracked Soviet Naval Aviation aircraft over the Mediterranean Sea and the North Atlantic Ocean. In the 1991 Gulf War, E-2Cs coordinated thousands of sorties during Operation Desert Storm, managing the air interdiction campaign. The type played a pivotal role in later conflicts, including Operation Enduring Freedom and Operation Iraqi Freedom, directing F/A-18 Hornet and F-14 Tomcat strikes. In a notable non-combat role, a Hawkeye from Carrier Air Wing Seven provided airborne command and control following the September 11 attacks.

Variants

The initial production model, the E-2A, featured the AN/APS-96 radar and AN/APA-172 display system. The improved E-2B introduced better IBM computers and a revised cooling system. The definitive E-2C, entering service in 1973, was a major upgrade with the new AN/APS-120 radar and the capability to track over-water and over-land targets; subsequent Group updates included the AN/APS-125, AN/APS-138, AN/APS-139, and AN/APS-145 radars. The TE-2C was a dedicated trainer version. The latest and most advanced variant is the E-2D Advanced Hawkeye, which features the AN/APY-9 radar with electronic scanning capability, a fully integrated "glass cockpit," and enhanced cooperative engagement capability linking with the Aegis Combat System. A proposed airborne early warning derivative for the United Kingdom was studied but not produced.

Operators

The primary and largest operator is the United States Navy, which fields squadrons such as the VAW-113 "Stingers" and the VAW-126 "Seahawks" across multiple carrier air wings. The French Navy operates the E-2C from its aircraft carrier, Charles de Gaulle (R91). The Japan Air Self-Defense Force uses the Hawkeye for national air defense from bases like Misawa Air Base. The Republic of China (Taiwan) operates a fleet of E-2K (upgraded E-2T) aircraft. The Egyptian Air Force and the Singapore Air Force are also significant international operators. The Mexican Navy previously operated a small number of E-2Cs for maritime patrol.

Specifications (E-2D)

The E-2D Advanced Hawkeye is powered by two Rolls-Royce T56-A-427A turboprop engines, each driving a Hamilton Standard 8-bladed NP2000 propeller. Its mission systems are centered on the AN/APY-9 radar, an ultra high frequency system capable of simultaneous air and surface track detection. The aircraft has a wingspan of approximately 80 feet 7 inches, which folds for carrier storage aboard vessels like the USS Gerald R. Ford. The crew consists of five: two pilots and three Naval Flight Officers serving as Combat Information Center Officers. Its avionics suite includes the AN/ALQ-217 electronic support measures system and is fully integrated with the Link 16 tactical data network for sharing information with platforms like the F-35 Lightning II and Arleigh Burke-class destroyers. Category:Military aircraft