TBD Devastator

TBD Devastator
Name	TBD Devastator
Type	Torpedo bomber
National origin	United States
Manufacturer	Douglas Aircraft Company
First flight	15 April 1935
Introduction	1937
Retired	1942
Primary user	United States Navy
Number built	130

TBD Devastator. The Douglas TBD Devastator was the first all-metal, low-wing monoplane torpedo bomber to enter service with the United States Navy. Introduced in 1937, it represented a significant technological leap for Naval aviation but was rendered obsolete by rapid advances in fighter aircraft and anti-aircraft warfare by the time of World War II. Its combat career was brief and culminated in heavy losses during the pivotal Battle of Midway, after which it was swiftly withdrawn from front-line service.

Design and development

The Devastator emerged from a United States Navy design competition in 1934, seeking to replace older biplane types like the Great Lakes BG. Designed by a team at the Douglas Aircraft Company, it featured several advanced innovations including a fully enclosed cockpit, hydraulically operated folding wings for carrier storage, and a semi-monocoque fuselage. Power was provided by a single Pratt & Whitney R-1830 Twin Wasp radial engine, driving a three-bladed Hamilton Standard propeller. The aircraft's primary armament was a single Mark 13 torpedo carried in a semi-recessed bay, though it could also be configured for level bombing with a 1,000 lb bomb. Despite its modern appearance, the design's performance was hampered by its large size, single engine, and lack of self-sealing fuel tanks or substantial defensive armor.

Operational history

The TBD entered service with Torpedo Squadron 3 (VT-3) aboard the USS Saratoga (CV-3) in late 1937, and by 1941 equipped all frontline torpedo squadrons in the Pacific Fleet. It saw minor action in early war raids, including the Marshalls-Gilberts raids and the Doolittle Raid support operations. The aircraft's most significant and tragic engagement came during the Battle of the Coral Sea in May 1942, where Devastators from USS Lexington (CV-2) and USS Yorktown (CV-5) scored hits on the Japanese light aircraft carrier Shōhō. Its final and most famous operation was at the Battle of Midway in June 1942. During slow, unescorted attacks on the Imperial Japanese Navy fleet, Devastators from Torpedo Squadron 8 (VT-8), Torpedo Squadron 6 (VT-6), and VT-3 suffered catastrophic losses to Mitsubishi A6M Zero fighters and intense anti-aircraft artillery fire, failing to score any hits. This sacrifice, however, drew Japanese combat air patrols down to sea level, enabling subsequent successful dive-bombing attacks by Douglas SBD Dauntless aircraft.

Variants

Only one major production variant of the aircraft was built, the TBD-1. The initial prototype, designated the XTBD-1, first flew from Clover Field in Santa Monica, California. All 129 production aircraft were TBD-1 models, with minor changes in equipment and radio fit over the production run. A proposed follow-on, the XTBD-2, which was to be equipped with a more powerful Wright R-2600 Twin Cyclone engine, was never produced as development priority shifted to its intended replacement, the Grumman TBF Avenger.

Operators

The sole operator of the TBD Devastator was the United States Navy. It served with multiple carrier air wings aboard aircraft carriers including USS Enterprise (CV-6), USS Yorktown (CV-5), USS Lexington (CV-2), USS Saratoga (CV-3), USS Hornet (CV-8), and USS Wasp (CV-7). Following its withdrawal from combat after Midway, remaining aircraft were relegated to training duties with operational training units like those at Naval Air Station Miami and utility squadrons, before being completely phased out of service by late 1942.

Specifications (TBD Devastator)

* **Crew:** 3 (pilot, bombardier/navigator, radio operator/gunner) * **Length:** 35 ft 0 in (10.67 m) * **Wingspan:** 50 ft 0 in (15.24 m) * **Height:** 15 ft 1 in (4.60 m) * **Empty weight:** 6,182 lb (2,804 kg) * **Gross weight:** 10,194 lb (4,624 kg) * **Powerplant:** 1 × Pratt & Whitney R-1830-64 Twin Wasp 14-cylinder air-cooled radial engine, 900 hp (670 kW) * **Maximum speed:** 206 mph (332 km/h, 179 kn) at 8,000 ft (2,400 m) * **Range:** 435 mi (700 km, 378 nmi) with torpedo * **Service ceiling:** 19,700 ft (6,000 m) * **Armament:** * 1 × 0.30 in (7.62 mm) or 0.50 in (12.7 mm) Browning machine gun in nose * 1 × 0.30 in (7.62 mm) Browning machine gun in rear cockpit * 1 × Mark 13 torpedo or 1 × 1,000 lb (450 kg) bomb or 2 × 500 lb (230 kg) bombs

Survivors

No complete Douglas TBD Devastators exist today. The last known airframe was reportedly scrapped in the late 1940s. Wreckage from several aircraft lost during the Battle of Midway has been located on the seabed near Midway Atoll by research teams, including expeditions led by Robert Ballard and more recently by Ocean Exploration Trust. These sites are considered war graves and are protected by international law. A few artifacts, such as instruments and small components recovered from crash sites, are held in collections like those of the National Naval Aviation Museum in Pensacola, Florida and the National Museum of the United States Navy in Washington, D.C..

Category:Torpedo bombers Category:World War II naval aircraft of the United States Category:Douglas aircraft