The Douglas B-18 Bolo is an American twin-engined medium bomber which served with the United States Army Air Corps and the Royal Canadian Air Force (as the Digby) during the late 1930s and early 1940s. The Bolo was developed by the Douglas Aircraft Company from their DC-2 as a replacement for the Martin B-10.

Though equipped with inadequate defensive armament and underpowered, the Bolo remained the Air Corps' primary bomber into 1941, and the Japanese destroyed some B-18s during the surprise attacks on Dec. 7. By early 1942, improved bombers like the B-17 replaced the Bolo as first-line bombardment aircraft.

The Douglas B-18 Bolo was an American medium bomber used by the United States Army Air Corps (USAAC) during the late 1930s and early 1940s. It was primarily employed for coastal defense and anti-submarine patrols before and during World War II.

B-18轰炸机，（英文：B-18 Bomber），是20世纪30年代后期道格拉斯飞机公司为美国陆军航空队研制的双发动机中型轰炸机。 B-18轰炸机具有较好的抗损毁性和较低的造价，是美军在珍珠港事变之前的主要轰炸机型，但其缺乏自卫武器、载弹量小和动力不足的缺点 ...

The Douglas B-18 (DB-1) was a military version of the Douglas DC-2 designed to meet the requirement for a coastal-defense, multi-engine bomber. It was designed for a USAAC competition, announced on August 6, 1934, to find a modern replacement for the assorted twin-engine Keystone biplane and Martin B-10 bombers.

The Douglas B-18 Bolo is an American medium bomber which served with the United States Army Air Corps and the Royal Canadian Air Force (as the Digby) during the late 1930s and early 1940s. The Bolo was built by the Douglas Aircraft Company, based on its DC-2, and was developed to replace the Martin B-10.

The National Museum of the US Air Force loaned the B-18 to Wings Over the Rockies in 1990, and our Restorations team has restored it to its prewar bomber configuration. Aircraft specifications: Wingspan: 89 ft 6 in (27.3 m) Length: 57 ft 10 in (17.7 m) Maximum speed: 216 mph (348 km/h) Bomb load: 4,400 lb (1,996 kg)

These new bombers were required to carry 2,000 pounds (907 kg) of bombs over a distance of at least 1,020 miles (1,640 km) and, if possible, 2,200 miles (3,540 km), with a top speed of at least 200 mph (322 km/h) and ideally 250 mph (402 km/h).

2017年1月22日 · Page details technical specifications, development, and operational history of the Douglas B-18 Bolo Medium Bomber Aircraft including pictures. The global defense reference actively compiled since 2003

Faced with a US Army Air Corps requirement of early 1934 for a bomber with virtually double the bomb load and range capability of the Martin B-10, which was then the USAAC's standard bomber, Douglas had little doubt that it could draw upon engineering experience and design technology of the DC-2 commercial transport which was then on the point ...