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Grumman WF-2 / E-1 Tracer


Carrierborne Airborne Early Warning (AEW) Aircraft


United States | 1958



"The Grumman E-1 Tracer AEW platform was based on the Grumman C-1 Trader carrier-based transport line."



Authored By: Staff Writer | Last Edited: 05/15/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
With the rise of the aircraft carrier in World War 2 and advances in radar technology, the United States Navy entered into a period of adopting piston-powered, twin engined aircraft specially designed and outfitted for the Airborne Early Warning (AEW) role. These aircraft were appropriately modified for life at sea, particularly over-water operations and carrier take-off, landing and storage. Such was the Grumman E-1 "Tracer" line of the 1960s and 1970s which was born from the transport-minded Grumman C-1 "Trader" family. The original Trader was adopted as an at-sea aircraft carrier transport platform in 1952 and served across 83 examples into the late 1980s. The E-1 represented a successful conversion of this line and saw her first flight on December 17th, 1956. The series was formally introduced into USN service in 1958 and managed a service life into 1977 across 88 examples before being officially replaced by the modern and more advanced Grumman E-1 "Hawkeye" line appearing in 1964.

The E-1 was born as the XTF-1W prototype and featured a twin rudder tail configuration, two underslung engine nacelles along a pair of high-mounted wing assemblies. The wings were designed to fold sideways via a hinge system. The sideways method was forced by the addition of the large radome over the fuselage. The cockpit was held well-forward in the design aft of a short nosecone assembly. The fuselage was tear-drop shaped in its side profile and offered the required aerodynamics. The prototype lacked the electronics of the finalized models and carried the serial number of 136792. The undercarriage was wholly retractable and arranged in a tail-dragger configuration, using two main front landing legs and a small tail wheel, giving the airframe a pronounced "nose-up" appearance when at rest. A tail hook was added under the empennage for carrier-based landings. One of the most obvious features of the design was its large radome fitted atop the fuselage spine at midships as part of the Hazeltine AN/APS-82 system. The radome was supported by a shallow framework of struts and designed in an aerodynamically refined way. This installation made the E-1 family highly recognizable on the decks of American carriers of the period. The standard crew arrangement for Tracers was four personnel to include two pilots and a pair of RADAR/Interceptor Controllers.

Power for the E-1 was served through 2 x Wright R-1820-82A Cyclone series 9-cylidner radial piston engines, each developing up to 1,525 horsepower driving three-bladed propeller assemblies. This provided the aircraft with a maximum speed of 240 miles per hour with a cruising speed of 160 miles per hour. Range was 1,035 miles with a mission endurance time of nearly 7 hours. The aircraft could reach service ceilings of 15,800 feet at a rate-of-climb nearing 1,120 feet per minute.

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Structurally, the E-1 was given a running length of 45 feet, 4 inches, a wingspan of 72 feet, 4 inches and a height of 16 feet, 10 inches. Empty listed weight was 20,640lbs with a maximum take-off weight of 26,600lbs.

The XTF-1W product was eventually redesignated under the XWF-1 identifier and entered production as the WF-2 under the then-current USN aircraft naming convention. The XTF-1W itself was then converted back to its C-1A Trader form while still holding on to its twin-fin tail arrangement. In the 1962 reorganization, the WF-2 was redesignated as the E-1B.

Tracers were still in use by the time of heavy involvement of American forces in the Vietnam War (1955-1975). E-1s in the war served in the Combat Air Patrol (CAP) role alongside fighter groups where they could relay enemy positions/activity and arrange ground strikes. Tracers were involved until about 1973 and the American commitment in the region ended in 1975. All Tracers were effectively removed from the USN inventory by 1977, bringing an end to their often overlooked contribution to American naval aviation. One claim to fame of the series was its status as a trend-setting carried based AEW platform - a category of naval aircraft that remains in play to this day (2013).

In all, some 88 WF-2/E-1B aircraft were produced. Due to its original "WF" designation, Tracers were nicknamed "Willy Fudd". Similarly, E-2 Hawkeyes were known under the nickname of "Super Fudd". The USN currently (2013) enjoys AEW capabilities through its E-2D "Advanced Hawkeye" platform and is one of the few propeller-driven airframes still operating on modern carrier decks.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Grumman WF-2 / E-1 Tracer Carrierborne Airborne Early Warning (AEW) Aircraft.
2 x Wright R-1820-82WA Cyclone 9-cylinder radial piston engines developing 1,525 horsepower each.
Propulsion
287 mph
462 kph | 249 kts
Max Speed
15,748 ft
4,800 m | 3 miles
Service Ceiling
1,300 miles
2,092 km | 1,130 nm
Operational Range
1,120 ft/min
341 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Grumman WF-2 / E-1 Tracer Carrierborne Airborne Early Warning (AEW) Aircraft.
4
(MANNED)
Crew
42.3 ft
12.90 m
O/A Length
69.6 ft
(21.20 m)
O/A Width
16.1 ft
(4.90 m)
O/A Height
18,748 lb
(8,504 kg)
Empty Weight
29,150 lb
(13,222 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Variants
Notable series variants as part of the Grumman WF-2 / E-1 Tracer family line.
XWF-1 - Design Study Designation based on S2F-1 Tracker modified for the Airborne Early Warning role.
WF-2 - Original Production Model Designation; based on TF-1 Trader; redesignated to E-1B beginning in 1962; 88 examples produced.
E-1B - Redesignation from WF-2 beginning in 1962.
Operators
Global customers who have evaluated and/or operated the Grumman WF-2 / E-1 Tracer. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 88 Units

Contractor(s): Grumman - USA
National flag of the United States

[ United States ]
Relative Max Speed
Hi: 300mph
Lo: 150mph
Aircraft Max Listed Speed (287mph).

Graph Average of 225 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
88
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
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Image courtesy the United States Navy.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIRBORNE EARLY WARNING
ELECTRONIC WARFARE
MARITIME / NAVY
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Grumman WF-2 / E-1 Tracer Carrierborne Airborne Early Warning (AEW) Aircraft appears in the following collections:
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