TBD Devastator
Encyclopedia
The Douglas
Douglas Aircraft Company
The Douglas Aircraft Company was an American aerospace manufacturer, based in Long Beach, California. It was founded in 1921 by Donald Wills Douglas, Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas...

 TBD Devastator
was a torpedo bomber
Torpedo bomber
A torpedo bomber is a bomber aircraft designed primarily to attack ships with aerial torpedoes which could also carry out conventional bombings. Torpedo bombers existed almost exclusively prior to and during World War II when they were an important element in many famous battles, notably the...

 of the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

, ordered in 1934, first flying in 1935 and entering service in 1937. At that point, it was the most advanced aircraft flying for the USN and possibly for any navy in the world. However, the fast pace of aircraft development caught up with it, and by the time of the Japanese attack on Pearl Harbor
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...

 the TBD was already outdated. It performed well in some early battles, but in the Battle of Midway
Battle of Midway
The Battle of Midway is widely regarded as the most important naval battle of the Pacific Campaign of World War II. Between 4 and 7 June 1942, approximately one month after the Battle of the Coral Sea and six months after Japan's attack on Pearl Harbor, the United States Navy decisively defeated...

 the Devastators launched against the Japanese fleet were almost totally wiped out. The type was immediately withdrawn from front line service, replaced by the Grumman TBF Avenger.

Design and development

Ordered on 30 June 1934, and entered into a U.S. Navy competition for new bomber aircraft to operate from its aircraft carriers, the Douglas entry was one of the winners of the competition. Other aircraft ordered for production as a result of the competition included the Northrop BT-1 which would evolve into the SBD Dauntless
SBD Dauntless
The Douglas SBD Dauntless was a naval dive bomber made by Douglas during World War II. The SBD was the United States Navy's main dive bomber from mid-1940 until late 1943, when it was largely replaced by the SB2C Helldiver...

, the Brewster SBA and the Vought SB2U Vindicator.

The XTBD Devastator, which flew for the first time on 15 April 1935, marked a large number of "firsts" for the U.S. Navy. It was the first widely-used carrier-based monoplane
Monoplane
A monoplane is a fixed-wing aircraft with one main set of wing surfaces, in contrast to a biplane or triplane. Since the late 1930s it has been the most common form for a fixed wing aircraft.-Types of monoplane:...

 as well as the first all-metal naval aircraft, the first with a totally-enclosed cockpit, the first with power-actuated (hydraulically) folding wings; it is fair to say that the TBD was revolutionary. A semi-retractable undercarriage was fitted, with the wheels designed to protrude 10 in (254 mm) below the wings to permit a "wheels-up
Belly landing
A belly landing or gear-up landing occurs when an aircraft lands without its landing gear fully extended and uses its underside, or belly, as its primary landing device...

" landing with only minimal damage. A crew of three was normally carried beneath a large "greenhouse" canopy almost half the length of the aircraft. The pilot sat up front; a rear gunner/radio operator took the rearmost seat, while the bombardier occupied the middle seat. During a bombing run, the bombardier lay prone, sliding into position under the pilot to sight through a window in the bottom of the fuselage, using the Norden Bombsight
Norden bombsight
The Norden bombsight was a tachometric bombsight used by the United States Army Air Forces and the United States Navy during World War II, and the United States Air Force in the Korean and the Vietnam Wars to aid the crew of bomber aircraft in dropping bombs accurately...

.

The normal TBD offensive armament consisted of either a 1200 lb (544.3 kg) Bliss-Leavitt Mark 13
Mark 13 torpedo
The Bliss-Leavitt Mark 13 torpedo was the U.S. Navy's most common aerial torpedo of World War II. It was designed with unusually squat dimensions for its type: diameter was and length . In the water, the Mark 13 could reach a speed of for up to . The Mark 13 ran slower than the Mark 14 torpedo...

 aerial torpedo
Aerial torpedo
The aerial torpedo, airborne torpedo or air-dropped torpedo is a naval weapon, the torpedo, designed to be dropped into water from an aircraft after which it propels itself to the target. First used in World War I, air-dropped torpedoes were used extensively in World War II, and remain in limited...

 or a 1000 lb (453.6 kg) bomb. Alternatively, three 500 lb (226.8 kg) general-purpose bombs: one under each wing and one under the fuselage, or 12 100 lb (45.4 kg) fragmentation bombs: six under each wing, could be carried. This weapons load was often used when attacking Japanese targets on the Gilbert and Marshall Islands in 1942. Defensive armament consisted of a 0.3 in (7.62 mm) machine gun
M1919 Browning machine gun
The M1919 Browning is a .30 caliber medium machine gun that was widely used during the 20th century. It was used as a light infantry, coaxial, mounted, aircraft, and anti-aircraft machine gun by the U.S. and many other countries, especially during World War II, the Korean War, and the Vietnam War...

 for the rear gunner. Fitted in the starboard side of the cowling was either a 0.3 in (7.6 mm) or 0.5 in (12.7 mm) machine gun.

The powerplant was a Pratt & Whitney R-1830-64 Twin Wasp radial engine
Radial engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel...

 of 850 hp, an outgrowth of the prototype's Pratt & Whitney XR-1830-60/R-1830-1 of 800 hp. Other changes from the 1935 prototype included a revised engine cowling and raising the cockpit canopy to improve visibility.

The XTBD had a flat canopy that was replaced on production models by a higher, domed canopy over a roll over bar. Other than requests by test pilots to improve pilot visibility, the prototype easily passed its acceptance trials that took place from 24 April-24 November 1935 at NAS Anacostia and Norfolk bases. After successfully completing torpedo drop tests, the prototype was transferred to the for carrier certification. The extended service trials continued until 1937 with the first two production aircraft retained by the company exclusively for testing.

A total of 129 of the type were purchased by the U.S. Navy's Bureau of Aeronautics (BuAer), and starting from 1937, began to equip the carriers , , , , , and . In pre-war use, TBD units were engaged in training and other operational activities and were gradually approaching the end of their useful service life with at least one aircraft being converted to target tug duty. By 1940, the U.S. Navy was aware that the TBD had become outclassed by the fighters and bombers of other nations and a replacement was in the works, but it was not yet in service when the U.S. entered World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. By then, attrition had reduced their numbers to just over 100 aircraft. The U.S. Navy assigned popular names to its aircraft in late 1941, and the TBD became the Devastator, although its nickname "torpecker" was commonly used.

Operational history

In the early days of the Pacific war, the TBD acquitted itself well during February and March 1942, with TBDs from Enterprise and Yorktown attacking targets in the Marshall
Marshall Islands
The Republic of the Marshall Islands , , is a Micronesian nation of atolls and islands in the middle of the Pacific Ocean, just west of the International Date Line and just north of the Equator. As of July 2011 the population was 67,182...

 and Gilbert Islands
Gilbert Islands
The Gilbert Islands are a chain of sixteen atolls and coral islands in the Pacific Ocean. They are the main part of Republic of Kiribati and include Tarawa, the site of the country's capital and residence of almost half of the population.-Geography:The atolls and islands of the Gilbert Islands...

, Wake Island
Wake Island
Wake Island is a coral atoll having a coastline of in the North Pacific Ocean, located about two-thirds of the way from Honolulu west to Guam east. It is an unorganized, unincorporated territory of the United States, administered by the Office of Insular Affairs, U.S. Department of the Interior...

 and Marcus Island, while TBDs from Yorktown and Lexington struck Japanese shipping off New Guinea
New Guinea
New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

 on 10 March. In the Battle of the Coral Sea
Battle of the Coral Sea
The Battle of the Coral Sea, fought from 4–8 May 1942, was a major naval battle in the Pacific Theater of World War II between the Imperial Japanese Navy and Allied naval and air forces from the United States and Australia. The battle was the first fleet action in which aircraft carriers engaged...

 Devastators helped sink the on 7 May, but failed to hit the the next day.

Problems were discovered with the Mark 13 torpedo at this point. Many were seen to hit the target yet fail to explode; there was also a tendency to run deeper than the set depth. It took over a year for the problems to be corrected. These problems were not fixed by the time of the Battle of Midway
Battle of Midway
The Battle of Midway is widely regarded as the most important naval battle of the Pacific Campaign of World War II. Between 4 and 7 June 1942, approximately one month after the Battle of the Coral Sea and six months after Japan's attack on Pearl Harbor, the United States Navy decisively defeated...

 on 4 June 1942.

At Midway, a total of 41 Devastators, a majority of the type still operational, were launched from Hornet, Enterprise and Yorktown to attack the Japanese fleet. The sorties were not well coordinated, in part because Rear Admiral Raymond A. Spruance
Raymond A. Spruance
Raymond Ames Spruance was a United States Navy admiral in World War II.Spruance commanded US naval forces during two of the most significant naval battles in the Pacific theater, the Battle of Midway and the Battle of the Philippine Sea...

 ordered a strike on the enemy carriers immediately after they were discovered, rather than spend the time to assemble a well-ordered attack among the different types of aircraft: fighters, bombers, torpedo planes, reasoning that attacking the Japanese would prevent a counterstrike against the US carriers. The TBDs from Hornet and Enterprise lost contact with their fighter escort and started their attacks without fighter protection.

The Devastator proved to be a death trap for its crews: slow and scarcely maneuverable, with light defensive weaponry and poor armor relative to the weapons of the time; its speed on a glide-bombing approach was a mere 200 mph (321.9 km/h), making it easy prey for fighters and defensive guns alike. The aerial torpedo could not even be released at speeds above 115 mph (185.1 km/h). Torpedo delivery requires a long, straight-line attack run, making the aircraft vulnerable, and the slow speed of the aircraft made them easy targets for the Mitsubishi A6M Zeros. Only four TBDs made it back to Enterprise, none to Hornet and two to Yorktown, without scoring a torpedo hit.

Nonetheless, their sacrifice was not completely in vain, as several TBDs managed to get within a few ship-lengths range of their targets before dropping their torpedoes, being close enough to be able to strafe the enemy ships and force the Japanese carriers to make sharp evasive maneuvers. Furthermore, the actions of the Devastator aircrews that day drew the Japanese air cover out of position. This window of opportunity was exploited by the late-arriving Douglas SBD Dauntless dive bombers led by Lieutenant Commander
Lieutenant Commander
Lieutenant Commander is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander...

 C. Wade McClusky
C. Wade McClusky
Rear Admiral Clarence Wade McClusky, Jr., was a United States Navy aviator during World War II. He is credited with playing a major part in the Battle of Midway...

 and Max Leslie
Max Leslie
Maxwell Franklin Leslie was a naval aviator in the United States Navy during World War II. He is credited with playing a major part in the Battle of Midway....

, and three of the four Japanese carriers were fatally damaged shortly afterwards.

The Navy immediately withdrew the TBD from front-line units after Midway; in any case, there were only 39 aircraft left. They remained in service briefly in the Atlantic and in training squadrons until 1944. The original prototype finished its career at NAS Norman
University of Oklahoma Westheimer Airport
University of Oklahoma Westheimer Airport , also known as Max Westheimer Airport, is a public general aviation airport located three miles northwest of the city of Norman in Cleveland County, Oklahoma, USA. The airport is run by the University of Oklahoma...

, Oklahoma
Oklahoma
Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

, and the last TBD in the U.S. Navy was used by the Commander of Fleet Air Activities-West Coast. When his TBD was scrapped in November 1944, there were no more. None survived the war and there are none known to exist on dry land today.

In fairness to the Devastator, the newer TBF Avengers were similarly ineffective, losing five out of six aircraft without scoring a hit at Midway. The Avengers' only successes in 1942 would be against the light carrier and the battleship In the initial part of the Pacific War, the poor performances of US torpedo bombers was due to the vulnerability of that type in general against AAA fire and defending fighters, plus the inexperience of American pilots and lack of coordinated fighter cover. It took growing American air superiority, improved attack coordination, and more experienced pilots, before the Avengers were able to successfully accomplish their roles in subsequent battles against Japanese surface forces.

After the debacle at Midway, the surviving TBD Devastators in VT-4 and VT-7 remained in service for a short time before being shipped back to the United States where the aircraft were relegated to training duties for pilots and mechanics or were destroyed following use as instructional airframes for fire-fighting training. By late 1944, no TBD Devastators were left in the US Navy inventory.

Variants

XTBD-1
Prototype powered by a 800 hp XR-1830-60, one built.

TBD-1
Production variant powered by a 850 hp R-1830-64, 129 built.

TBD-1A
One TBD-1 modified with twin floats.

Operators

 United States
  • United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

    • VT-2 used 58 Devastators between December 1937 and May 1942.
    • VT-3 used 71 Devastators between October 1937 and June 1942. They starred in the 1941 movie Dive Bomber.
    • VT-4
      VFA-15
      The VFA-15, Strike Fighter Squadron 15 is a U.S. Navy strike fighter squadron based at NAS Oceana. Their call sign is Pride, tail code is AJ, and they fly the F-18 Hornet...

       used 9 Devastators between December 1941 and September 1942.
    • VT-5 used 57 Devastators between February 1938 and June 1942.
    • VT-6 used 62 Devastators between April 1938 and June 1942.
    • VT-7 used 5 Devastators between January 1942 and July 1942.
    • VT-8
      VT-8
      Torpedo Squadron 8 was a United States Navy squadron of World War II torpedo bombers assigned initially to the Air Group operating from the aircraft carrier USS Hornet , until after her loss in October 1942 during the Battle of Santa Cruz Island...

       used 23 Devastators between September 1941 and June 1942.
    • VB-4
      VFA-14
      The Strike Fighter Squadron 14 "Tophatters" are a United States Navy fighter attack squadron based at Naval Air Station Lemoore. They fly the F/A-18E Super Hornet, and are the Navy's oldest active squadron, having formed in 1919...

       used 3 Devastators between December 1941 and January 1942.
    • VS-42 used 3 Devastators between December 1940 and December 1941.
    • VS-71 used 8 Devastators between December 1940 and June 1942.
    • VS-72 used 2 Devastators in June 1941.
    • VU-3 used a single Devastator from January until May 1940.
  • United States Marine Corps
    United States Marine Corps
    The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

    • VMS-2 used a single Devastator, BuNo. 1518, from 26 March 1941 till 5 June 1941, loaned from VT-3.

Survivors

There are no Devastators in any collection or museum. Several wrecks are known and are being investigated for possible salvage and restoration:
TBD-1, BuNo.0298
Ex-VT-5 / USS Yorktown (CV-5) "5-T-7", Jaluit Lagoon, Marshall Islands.

TBD-1 BuNo.0353
Ex-NAS Miami, Atlantic Ocean, Miami, Florida.

TBD-1 BuNo.1515
Ex VT-5 / USS Yorktown (CV-5) "5-T-6", Jaluit Lagoon, Marshall Islands.

TBD-1 BuNo.0377
Ex-VT-2 / USS Lexington (CV-2) "6-T-7", Pacific Ocean, Mission Beach, California.

Specifications (TBD-1)

Notable appearance in media

Dive Bomber
Dive Bomber (film)
Dive Bomber is a 1941 American propaganda film directed by Michael Curtiz. It is notable for both its Technicolor photography of pre-World War II United States Navy aircraft and as a historical document of the US in 1941, including the aircraft carrier USS Enterprise, one of the best known World...

(1941) was an American
Cinema of the United States
The cinema of the United States, also known as Hollywood, has had a profound effect on cinema across the world since the early 20th century. Its history is sometimes separated into four main periods: the silent film era, classical Hollywood cinema, New Hollywood, and the contemporary period...

 propaganda film
Propaganda film
The term propaganda can be defined as the ability to produce and spread fertile messages that, once sown, will germinate in large human cultures.” However, in the 20th century, a “new” propaganda emerged, which revolved around political organizations and their need to communicate messages that...

 directed by Michael Curtiz
Michael Curtiz
Michael Curtiz was an Academy award winning Hungarian-American film director. He had early creditsas Mihály Kertész and Michael Kertész...

. It is notable for both its Technicolor
Technicolor
Technicolor is a color motion picture process invented in 1916 and improved over several decades.It was the second major process, after Britain's Kinemacolor, and the most widely used color process in Hollywood from 1922 to 1952...

 photography of pre-World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 aircraft featuring the TBD Devastator, and scenes on the aircraft carrier as well as the NAS North Island
Naval Air Station North Island
Naval Air Station North Island or NAS North Island is located at the north end of the Coronado peninsula on San Diego Bay and is the home port of several aircraft carriers of the United States Navy...

 in San Diego.

See also

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK