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E-1 Tracer

E-1 Tracer
E-1B Tracer
Type	Carrier AEW
Manufacturer	Grumman
Maiden flight	17 December 1956
Introduced	1958
Retired	1977
Status	Retired
Primary user	United States Navy
Number built	88
Developed from	C-1 Trader

The E-1 Tracer was the first purpose built airborne early warning aircraft used by the United States Navy. It was a derivative of the C-1 Trader and first entered service in 1958. It was replaced by the more modern E-2 Hawkeye in the early 1970s.

Contents 1 Design and development 1.1 Radar 2 Variants 3 Operators 4 Specifications 5 See also 6 External links

Design and development

The E-1 was designated WF under the old US Navy system; the designation earned it the nickname "Willy Fudd". Since the S-2 Tracker was known as S2F under the old system, that airplane was nicknamed "Stoof"; the WF/E-1 with its distinctive radome gained the nickname "Stoof with a Roof."

Radar

The Tracer was fitted with the Hazeltine AN/APS-82 in its radome. The radar featured an Airborne Moving Target Indicator (AMTI), which analyzes the Doppler shift in reflected radar energy to distinguish a flying aircraft against the clutter produced by wave action at the ocean's surface. Separating a moving object from stationary background is accomplished by suitable hardware.

Variants

XWF-1

Design study for an Airborne Early Warning version of the S2F-1 Tracker, not built.

WF-2

Airborne Early Warning version of the TF-1 Trader, redesignated E-1B in 1962, 88 built.

E-1B

WF-2 redesignated in 1962.

Operators

 United States

• United States Navy

Specifications

General characteristics

• Crew: 4, two pilots, two RADAR/Intercept Controllers
• Length: 42.25 ft (12.9 m)
• Wingspan: 69.6 ft (21.2 m)
• Height: 16.3 ft (4.9 m)
• Wing area: 499 sq ft (46,35 qm)
• Empty weight: 18,750 lbs (8,504 kg)
• Loaded weight: 26,600 lbs (12,065 kg)
• Max takeoff weight: 29,150 lbs (13,222 kg)
• Powerplant: 2× Wright R-1820-82WA Cyclone 9-cylinder radial piston engine, 1,525 hp (1,137 kW) each

Performance

• Maximum speed: 287 mph (462 km/h)
• Range: 1,300 miles (2,092 km)
• Service ceiling 15,800 ft (4,800 m)
• Rate of climb: 1,120 ft/min (340 m/min)

Armament none

See also

Related development

• S-2 Tracker
• C-1 Trader
  

Comparable aircraft

• E-2 Hawkeye
  

External links

• Global Security.org page on WF-2/E-1 Tracer
• Airborne Moving Target Indicator (AMTI) explanation provided by Mercury Computer

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