Martin B-26 Marauder: "Building a Bomber" 1941 US Office for Emergency Management; World War II (Patreon)

more at http://quickfound.net/

'Shows B-26 medium bombers at the Glenn L. Martin Company plant in Baltimore, Maryland.'

Originally a public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.

The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

http://en.wikipedia.org/wiki/Martin_B-26_Marauder

Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

The Martin B-26 Marauder was a World War II twin-engine medium bomber built by the Glenn L. Martin Company. First used in the Pacific Theater in early 1942, it was also used in the Mediterranean Theater and in Western Europe.

After entering service with the U.S. Army, the aircraft received the reputation of a "Widowmaker" due to the early models' high rate of accidents during takeoff and landings. The Marauder had to be flown by exact airspeeds, particularly on final approach and when one engine was out. The 150 mph (241 km/h) speed on short final was intimidating to pilots who were used to much slower speeds, and whenever they slowed down below what the manual stated, the aircraft would stall and crash.

The B-26 became a safer aircraft once crews were re-trained and after aerodynamics modifications (increase of wing span and incidence, to give better take off performance, and a larger fin and rudder). After aerodynamic and design changes, the aircraft distinguished itself as "the chief bombardment weapon on the Western Front" according to a United States Army Air Forces dispatch from 1946.[citation needed] The Marauder ended World War II with the lowest loss rate of any USAAF bomber.

A total of 5,288 were produced between February 1941 and March 1945; 522 of these were flown by the Royal Air Force and the South African Air Force. By the time the United States Air Force was created as an independent service separate from the Army in 1947, all Martin B-26s had been retired from US service. The Douglas A-26 Invader then assumed the B-26 designation.

Design and development

In March 1939, the United States Army Air Corps issued Circular Proposal 39-640, a specification for a twin-engined medium bomber, demanding a maximum speed of 350 mph (560 km/h), a range of 3,000 mi (4,800 km) and a bomb load of 2,000 lb (910 kg). On 5 July 1939, the Glenn L. Martin Company submitted its design, produced by a team led by Peyton M. Magruder, to meet the requirement, the Martin Model 179. Martin's design was evaluated as superior to the other proposals and was awarded a contract for 201 aircraft, to be designated B-26.[6] The B-26 went from paper concept to an operational bomber in approximately two years. Additional orders for a further 930 B-26s followed in September 1940, still prior to the first flight of the type...

The B-26 Marauder was used mostly in Europe but also saw action in the Mediterranean and the Pacific. In early combat the aircraft took heavy losses but was still one of the most successful medium-range bombers used by the U.S. Army Air Forces. The B-26 was initially deployed on combat missions in the South West Pacific in the spring of 1942, but most of the B-26s subsequently assigned to operational theaters were sent to England and the Mediterranean area.

By the end of World War II, it had flown more than 110,000 sorties and had dropped 150,000 tons (136,078 tonnes) of bombs, and had been used in combat by British, Free French and South African forces in addition to U.S. units. In 1945, when B-26 production was halted, 5,266 had been built...