Northrop Grumman E-2 Hawkeye

The Northrop Grumman E-2 Hawkeye is an American all-weather, carrier-capable tactical airborne early warning (AEW) aircraft. 

Variants

W2F-1

Original designation of the Hawkeye, changed to E-2A in 1962.

E-2A

Initial production version, was W2F-1 before 1962. 59 built.

TE-2A

Two E-2As converted as crew trainers.

YC-2A

Two E-2As, BUNOs 148147 and 148148, converted as prototypes of the C-2 Greyhound

E-2B

As E-2A but fitted with improved computing, enlarged outer fins.

52 converted from E-2A.

YE-2C

Two E-2As, BUNOs 148712 and 148713, converted as E-2C prototypes.

Designated as YE-2C and NE-2C respectively.

These airframes then finished out their useful life being used as TE-2C pilot trainers.

E-2C

As the E-2B but with all new electronics, surveillance radar and search radar, 63 built.

In “plus-models” the E-2C also has upgraded turboprop engines.

E-2C Group 0

Initial production version of E-2C, fitted with AN/APS-120 or AN/APS-125 radar.

Lengthened nose compared to earlier versions

E-2C Group I

New radar (AN/APS-139), plus upgraded mission computer and upgraded engines.

18 new build aircraft.

E-2C Group 2

AN/APS-145 radar, further improved electronics.

E-2C Group 2 Plus (Nav Upgrade)

Avionics upgrade, inclusion of GPS into weapon system.

E-2C Hawkeye 2000

New mission computer, Cooperative Engagement Capability (CEC) and additional satellite communications aerial.

Originally designated Group 2+.

E-2D

A variant with new avionics suite, improved engines, a new “glass cockpit” and the potential for air-to-air refuelling.

E-2T/K

E-2C variant for Republic of China (Taiwan), with parts taken from retired E-2Bs.

However, these aircraft have the same level of electronics as the E-2C Group II Hawkeyes with their APS-145 radars and are referred to as E-2T, with “T” standing for Taiwan.

On July 31, 1999, Taiwan was approved to acquire two additional E-2 built to Hawkeye 2000 standard.

Later, the four original E-2T were also upgraded to the same standard.

The upgraded aircraft were referred to as E-2K.

Specifications

Crew

5

Length

57 ft 8+3⁄4 in (17.596 m)

Wingspan

80 ft 7 in (24.56 m)

Height

18 ft 3+3⁄4 in (5.582 m)

Radome could retract by 2 feet to fit into the 17′ 6″ clear height hangar of Essex and Midway class carriers.

Retraction function no longer used.

Wing area

700 sq ft (65 m2)

Aspect ratio

9.15

Airfoil

Root

NACA 63A216

Tip

NACA 63A414

Empty weight

40,200 lb (18,234 kg)

Gross weight

43,068 lb (19,535 kg)

Max take-off weight

57,500 lb (26,082 kg)

Powerplant

2 × Allison/Rolls-Royce T56-A-427 (E-2C), T56-A-427A (E-2D) turboprop, 5,100 shp (3,800 kW) each

Performance

Maximum speed

350 kn (400 mph, 650 km/h)

Cruise speed

256 kn (295 mph, 474 km/h)

Ferry range

1,462 nmi (1,682 mi, 2,708 km)

Endurance

6 hours (8 hours land-based)

Service ceiling

34,700 ft (10,600 m)

Wing loading

72.7 lb/sq ft (355 kg/m2)

Power/mass

0.19 hp/lb (0.31 kW/kg)

Avionics

AN/APS-145 Radar

OL-483/AP IFF interrogator system

APX-100 IFF Transponder

OL-698/ASQ Tactical Computer Group

AN/ARC-182 UHF/VHF radio

AN/ARC-158 UHF radio

AN/ARQ-34 HF radio

AN/USC-42 Mini-DAMA SATCOM system.

 

 

 

 

 

 

 

 

 

 

 

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