Grumman TBM Avenger
| TBF/TBM Avenger | |
|---|---|
 |
|
| Two Grumman TBF-1 Avengers circa 1942. | |
| Role | Torpedo bomber |
| National origin | United States |
| Manufacturer |
Grumman General Motors |
| First flight | 7 August 1941 |
| Introduction | 1942 |
| Retired | 1960s |
| Status | Retired |
| Primary users |
United States Navy Royal Navy Royal Canadian Navy Royal New Zealand Air Force |
| Number built | 9,839 |
The Grumman TBF Avenger (designated TBM for aircraft manufactured by General Motors) is an American torpedo bomber developed initially for the United States Navy and Marine Corps, and eventually used by several air and naval aviation services around the world.
The Avenger entered U.S. service in 1942, and first saw action during the Battle of Midway. Despite the loss of five of the six Avengers on its combat debut, it survived in service to become one of the outstanding torpedo bombers of World War II. Greatly modified after the war, it remained in use until the 1960s.
The Douglas' TBD Devastator, the U.S. Navy's main torpedo bomber introduced in 1935, was obsolete by 1939. Bids were accepted from several companies, but Grumman's TBF design was selected as the replacement for the TBD and in April 1940 two prototypes were ordered by the Navy. Designed by Leroy Grumman, the first prototype was called the XTBF-1. It was first flown on 7 August 1941. Although one of the first two prototypes crashed near Brentwood, New York, rapid production continued.
Grumman's first torpedo bomber was the heaviest single-engined aircraft of World War II, and only the USAAF's P-47 Thunderbolt came close to equalling it in maximum loaded weight among all single-engined fighters, being only some 400 lb (181 kg) lighter than the TBF, by the end of World War II. The Avenger was the first design to feature a new "compound angle" wing-folding mechanism created by Grumman, intended to maximize storage space on an aircraft carrier; the F4F-4 and later models of Wildcat received a similar folding wing and the F6F Hellcat (both designed by Grumman) employed this mechanism as well. The engine used was the Wright R-2600-20 Cyclone 14 twin-row radial engine (which produced 1,900 hp/1,417 kW). The aircraft took 25 gallons of oil and used one gallon per minute at start-up.
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