Grumman F7F Tigercat

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F7F Tigercat
F7F-3P Tigercat.jpg
An F7F-3P preserved in United States Marine Corps markings in flight
Role Heavy fighter
National originUnited States
Manufacturer Grumman
First flight2 November 1943
Introduction1944
Retired1954
Primary users United States Navy
United States Marine Corps
Produced1943–1946
Number built364
Developed into Grumman XTSF

The Grumman F7F Tigercat is a heavy fighter aircraft that served with the United States Navy (USN) and United States Marine Corps (USMC) from late in World War II until 1954. It was the first twin-engine fighter to be deployed by the USN. While the Tigercat was delivered too late to see combat in World War II, it saw action as a night fighter and attack aircraft during the Korean War.

Contents

Designed initially for service on Midway-class aircraft carriers, early production F7Fs were land-based variants. The type was too large to operate from older and smaller carriers, and only a late variant (F7F-4N) was certified for carrier service.

Design & development

Based on the earlier Grumman XP-50 that was eventually canceled, the company developed the XP-65 (Model 51) further for a future "convoy fighter" concept. In 1943, work on the XP-65 was terminated in favor of the design that would eventually become the F7F. [1] The contract for the prototype XF7F-1 was signed on 30 June 1941. Grumman's aim was to produce a fighter that outperformed and outgunned all existing fighter aircraft, and that had an auxiliary ground attack capability. [2]

An F7F-3N of VMF(N)-513 at Wonsan, Korea, in 1952. F7F-3N VMFN-513 Wonsan 1952.jpg
An F7F-3N of VMF(N)-513 at Wonsan, Korea, in 1952.

Performance of the prototype and initial production aircraft met expectations; the F7F was one of the fastest piston-engine fighters, with a top speed significantly greater than single-engine USN aircraft – 71 mph faster than a Grumman F6F Hellcat at sea level. [3] Captain Fred Trapnell, one of the premier USN test pilots of the era, stated: "It's the best damn fighter I've ever flown." [4] The F7F was to be heavily-armed: four 20 mm cannon and four 50 caliber (0.50 in; 12.7 mm) machine guns, as well as underwing and under-fuselage hardpoints for bombs and torpedoes. This speed and firepower was bought at the cost of heavy weight and a high landing speed, but what caused the aircraft to fail carrier suitability trials was poor directional stability with only one engine operational, as well as problems with the tailhook design. [5] The initial production series was, therefore, used only from land bases by the USMC, as night fighters with APS-6 radar. [6]

While the F7F was initially also known as the Grumman Tomcat, this name was abandoned, because it was considered at the time to have excessively sexual overtones; [7] (from the 1970s, the name Tomcat became commonly associated with, and officially used by the Navy for, another Grumman design, the F-14 twin-jet carrier-based interceptor). The first production variant was the single-seat F7F-1N aircraft; after the 34th production aircraft, a second seat for a radar operator was added and these aircraft were designated F7F-2N.

A second production version, the F7F-3, was modified to correct the issues that caused the aircraft to fail carrier acceptance, and this version was again trialled on the USS Shangri-La. A wing failure on a heavy landing caused the failure of this carrier qualification as well. F7F-3 aircraft were produced in day fighter, night fighter, and photo-reconnaissance versions. [8]

The final production version, the F7F-4N, was extensively rebuilt for additional strength and stability, and did pass carrier qualification, but only 12 were built. [8]

Operational history

Marine Corps night fighter squadron VMF(N)-513 flying F7F-3N Tigercats saw action in the early stages of the Korean War, flying night interdiction and fighter missions and shooting down two Polikarpov Po-2 biplanes. [9] This was the only combat use of the aircraft.

Most F7F-2Ns were modified to control drones for combat training, and these gained bubble canopies over the rear cockpit for the drone controller. An F7F-2D used for pilot transitioning also had a rear sliding, bubble canopy. [10]

In 1945, two Tigercats, serial numbers TT346 and TT349, were evaluated, but rejected by the British Royal Navy, who preferred a naval version of the de Havilland Hornet. [11]

Variants

The second XF7F-1 in 1946. XF7F-1 at Moffett Field 1946.jpg
The second XF7F-1 in 1946.
An F7F-2D drone controller with an additional F8F windshield. F7F-2D with F8F windshield NAN3-49.jpg
An F7F-2D drone controller with an additional F8F windshield.
An F7F-3N night fighter of VMF(N)-513 in April 1950. F7F-3N Tigercat VMF(N)-531.jpeg
An F7F-3N night fighter of VMF(N)-513 in April 1950.
XP-65
Proposed United States Army Air Forces pursuit fighter.
XF7F-1
Prototype aircraft, two built.
F7F-1 Tigercat
Twin-engine fighter-bomber aircraft, powered by two Pratt & Whitney R-2800-22W radial piston engines. First production version, 34 built.
F7F-1N Tigercat
Single-seat night fighter aircraft, fitted with an APS-6 radar.
XF7F-2N
Night-fighter prototype, one built.
F7F-2N Tigercat
Two-seat night fighter, 65 built.
F7F-2D
Small numbers of F7F-2Ns converted into drone control aircraft. The aircraft were fitted with a Grumman F8F Bearcat windshield behind the cockpit.
F7F-3 Tigercat
Single-seat fighter-bomber aircraft, powered by two Pratt & Whitney R-2800-34W radial piston engines and featuring an enlarged tailfin for improved stability at high altitudes, 189 built.
F7F-3N Tigercat
Two-seat night fighter aircraft, 60 built.
F7F-3E Tigercat
Small numbers of F7F-3s were converted into electronic warfare aircraft.
F7F-3P Tigercat
Small numbers of F7F-3s were converted into photo-reconnaissance aircraft.
F7F-4N Tigercat
Two-seat night-fighter aircraft, fitted with a tailhook and other naval equipment, 13 built.

Operators

Flag of the United States.svg  United States

Surviving aircraft

The Tigercat was designed to have a very small frontal area. Grumman F7F-3N Tigercat 2007.jpg
The Tigercat was designed to have a very small frontal area.
F7F-3N Tigercat in use with belly tank in the fire-fighting role in 1988 Grumman F7F-3N Tigercat Sis-Q Santa Rosa CA 29.03.88 edited-2.jpg
F7F-3N Tigercat in use with belly tank in the fire-fighting role in 1988
F7F Tigercat N747MX La Patrona at 2014 Reno Air Races F7F Tigercat N747MX La Patrona 2014 Reno Air Races Silver photo D Ramey Logan.jpg
F7F Tigercat N747MX La Patrona at 2014 Reno Air Races
La Patrona in the pits at the 2014 Reno Air Races F7F Tigercat N747MX La Patrona 2014 Reno Air Races pit photo D Ramey Logan.jpg
La Patrona in the pits at the 2014 Reno Air Races

Beginning in 1949, F7Fs were flown to the then-U.S. Navy storage facility at Naval Air Station Litchfield Park, Arizona. [12] Although the vast majority of the airframes were eventually scrapped, a number of examples were purchased as surplus. The surviving Tigercats were primarily used as water bombers to fight wildfires in the 1960s and 1970s and Sis-Q Flying Services of Santa Rosa, California, operated an F7F-3N tanker in this role until retirement in the late 1980s.

Airworthy
F7F-3
On display
F7F-3
Under restoration or in storage
F7F-3

Specifications (F7F-4N Tigercat)

Drawing of an F7F-3N. Grumman F7F-3N drawing.jpg
Drawing of an F7F-3N.

Data from Jane's Fighting Aircraft of World War II [28]

General characteristics

Performance

Armament

Avionics

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

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References

Notes
  1. Dorr and Donald 1990, p. 119.
  2. Thruelsen 1976, p. 204.
  3. Meyer 2002, p. 51.
  4. Meyer 2002, p. 54.
  5. Meyer 2002, p. 55.
  6. Thruelsen 1976, p. 205.
  7. Meyer 2002, p. 50
  8. 1 2 Taylor 1969, p. 504.
  9. Grossnick and Armstrong 1997
  10. Gault 1973, p. 25.
  11. Zuk 2004, p. 129.
  12. Legg 1991, p. 26.
  13. "FAA Registry: N7629C". FAA.gov. Retrieved: 30 October 2020.
  14. "FAA Registry: N379AK". FAA.gov. Retrieved: 30 October 2020.
  15. "FAA Registry: N700F". FAA.gov. Retrieved: 30 October 2020.
  16. "Grumman F7F Tigercat/Bu. 80390". Lewis Air Legends. Retrieved: 13 January 2020.
  17. "FAA Registry: N207F." FAA.gov. Retrieved: 30 October 2020.
  18. "Grumman F7F Tigercat/Bu. 80411". Palm Springs Air Museum. Retrieved: 23 February 2014.
  19. "FAA Registry: N909TC". FAA.gov. Retrieved: 30 October 2020.
  20. "FAA Registry: N6178C". FAA.gov. Retrieved: 30 October 2020.
  21. "FAA Registry: N747MX". FAA.gov. Retrieved: 30 October 2020.
  22. "Grumman F7F Tigercat/Bu. 80503". Lewis Air Legends. Retrieved: 13 January 2020.
  23. "FAA Registry: N7195C". FAA.gov. Retrieved: 30 October 2020.
  24. "Grumman F7F Tigercat/Bu. 80373". National Naval Aviation Museum. Retrieved: 23 March 2020.
  25. "Grumman F7F Tigercat/Bu. 80382". Planes of Fame Museum. Retrieved: 23 March 2020.
  26. "Grumman F7F Tigercat/Bu. 80410". Pima Air & Space Museum. Retrieved: 23 March 2020.
  27. "FAA Registry: N7626C". FAA.gov. Retrieved: 30 October 2020.
  28. Bridgman 1946, p. 233.
  29. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
Bibliography