Grumman F9F Panther
The Grumman F9F Panther was an American single-seat, straight-wing carrier jet fighter — Grumman's first jet fighter. First flown in November 1947, it entered service in May 1949 and became the US Navy and Marine Corps' main jet of the Korean War, flying some 78,000 combat sorties, mostly on ground attack; its pilots claimed the Navy's first jet air-to-air victories. Grumman built 1,385 Panthers before the swept-wing Cougar succeeded the type, and Argentina flew ex-US aircraft until 1969.
Why It Mattered
The Panther was Grumman's first jet fighter, and it carried the United States Navy and Marine Corps into the jet age in combat. The design was deliberately conservative, with straight wings and a conventional tail, but it arrived just when the Navy needed it and became the service's main fighter of the Korean War. On 3 July 1950, days into that war, a Panther from USS Valley Forge shot down a North Korean Yak-9, the first air-to-air kill by a Navy jet. Panthers went on to fly some 78,000 combat sorties over Korea, and most of that work was ground attack rather than dogfighting. The Panther could take a hit and keep flying, a quality that helped it introduce thousands of pilots to jet aviation.
Design Notes
The Panther began as the G-75, a four-engined night fighter, but Grumman replaced it with the single-engined G-79 day fighter that became the F9F. Distrusting the American engines then available for overwater flying, Grumman chose the Rolls-Royce Nene, a 5,000-pound-thrust centrifugal turbojet that Pratt & Whitney licence-built as the J42. The prototype first flew in November 1947, from Grumman's Bethpage plant on Long Island. The airframe stayed conventional: a straight folding wing with the intakes at its roots, four 20 mm cannon in the nose, and permanent wingtip fuel tanks, fitted because the thirsty engine left too little room for fuel inside. Later versions stretched the design: the F9F-5, the most numerous Panther, used the more powerful J48, a licence-built Rolls-Royce Tay, and unarmed photo-reconnaissance variants carried cameras in the nose instead of guns.
Operational History
The Panther entered service in May 1949, with VF-51 the first squadron to receive it. When the Korean War began in June 1950, it was the Navy's principal jet, and Panthers flew the majority of Navy and Marine Corps jet combat sorties of the conflict. Most missions were attack work — interdiction, fleet combat air patrol and escort for reconnaissance aircraft — flown against intense antiaircraft fire that damaged many Panthers but rarely stopped operations. In the air-to-air war, Panther pilots claimed seven MiG-15s for the loss of two Panthers; the first MiG-15 credited to a Navy jet pilot fell on 9 November 1950, to Lieutenant Commander William Amen of VF-111. In November 1952, Lieutenant Royce Williams was credited with four MiG-15s in a single 35-minute fight, a combat against Soviet-flown jets that was kept secret for decades. Marine Corps Panthers flew the type in Korea too, and among their pilots were future astronauts Neil Armstrong and John Glenn and Boston Red Sox slugger Ted Williams, who often flew as Glenn's wingman. Grumman built 1,385 Panthers in all, the main production versions being the F9F-2, with 567 built, and the F9F-5, with 616. The swept-wing Cougar then began replacing the Panther in front-line service; the Navy withdrew it from front-line combat in 1956, the Marines kept a few until late 1957, and surviving aircraft served on as drones and drone controllers.
Afterlife
The Panther's only export operator was Argentina, whose naval aviation bought 28 ex-US Navy aircraft in 1957 and flew them until 1969, when a shortage of spare parts ended their service. Argentine Panthers saw combat in the 1963 navy revolt, bombing and strafing army forces, and one was shot down. Stateside, the Panther had already become the first jet flown by the Blue Angels, serving with the demonstration team from 1949 to late 1954. Surviving Panthers are preserved by museums across the United States, among them the National Naval Aviation Museum at Pensacola, the USS Midway Museum in San Diego and the Pima Air & Space Museum in Tucson. The Wings of Freedom Aviation Museum in Pennsylvania displays an F9F-2 that spent most of its career on test work at Johnsville. Two Panthers returned to the air in civilian hands in the 1980s and 1990s; one was destroyed in a 1996 accident, and the other, at the Cavanaugh Flight Museum in Texas, was described by Smithsonian Magazine in 2013 as the last potentially flyable Panther, though the museum closed in January 2024 and the aircraft was to be moved.