/ Northrop Grumman E-2 Hawkeye
Northrop Grumman E-2 Hawkeye
The Northrop Grumman E-2 Hawkeye is an American all-weather, carrier-capable tactical airborne early warning (AEW) aircraft.
Original designation of the Hawkeye, changed to E-2A in 1962.
Initial production version, was W2F-1 before 1962. 59 built.
Two E-2As converted as crew trainers.
Two E-2As, BUNOs 148147 and 148148, converted as prototypes of the C-2 Greyhound
As E-2A but fitted with improved computing, enlarged outer fins.
52 converted from E-2A.
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.
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+.
A variant with new avionics suite, improved engines, a new “glass cockpit” and the potential for air-to-air refuelling.
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.
57 ft 8+3⁄4 in (17.596 m)
80 ft 7 in (24.56 m)
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.
700 sq ft (65 m2)
40,200 lb (18,234 kg)
43,068 lb (19,535 kg)
Max take-off weight
57,500 lb (26,082 kg)
2 × Allison/Rolls-Royce T56-A-427 (E-2C), T56-A-427A (E-2D) turboprop, 5,100 shp (3,800 kW) each
350 kn (400 mph, 650 km/h)
256 kn (295 mph, 474 km/h)
1,462 nmi (1,682 mi, 2,708 km)
6 hours (8 hours land-based)
34,700 ft (10,600 m)
72.7 lb/sq ft (355 kg/m2)
0.19 hp/lb (0.31 kW/kg)
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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