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Douglas B-23 Dragon

Medium Bomber / Maritime Patrol / Crew Trainer Aircraft

United States | 1939

"Fewer then forty of the Douglas B-23 Dragon bombers were furnished by Douglas Aircraft Company to the United States Army Air Corps prior to World War 2."

Authored By: Staff Writer | Last Edited: 06/25/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The lead-up to World War 2 for the United States saw a period of constant progression for its bomber force. Founded in 1921, the Douglas Aircraft Company was already a common manufacturing brand seen in large American aircraft. The Douglas B-18 "Bolo" medium bomber was one of the primary types taken into service during the 1930s. Introduced in 1936, three-hundred fifty were produced and served with the United States Army Air Corps (USAAC), the Canadian Air Force, and the Brazilian Air Force. It held origins in the Douglas DC-2 transport of 1934.

From the B-18's basic design, the company began work on a more refined version under the "XB-22" prototype designation. This aircraft was proposed with 2 x Wright R-2600-3 series "Twin Cyclone" radial piston engines of 1,600 horsepower each and, from this, emerged a USAAC contract order for 38 aircraft. These replaced an order for thirty eight examples originally intended as B-18A bombers from Douglas.

The new bomber was designated B-23 "Dragon" in service and carried the Wright engine pairing in nacelles buried along the wing leading edges, each engine driving three-bladed propeller units. The wing mainplanes were low-mounted along the fuselage sides and the fuselage being well-tapered from nose to tail. The nose section was glazed over for optimal viewing by the bombardier/navigator while the cockpit was stepped. The aircraft was crewed by six personnel. The undercarriage was of a "tail dragger" configuration and retractable with the main legs recessing into the engine nacelles at each wing.

Standard armament was 3 x 0.30 caliber machine guns set about the aircraft for local defense. There was also a single 0.50 caliber heavy machine gun fitted to the tail - the first such installation seen on any American aircraft. Beyond this armament, the aircraft was cleared to carry up to 2,000lb of conventional drop ordnance in an internal bomb bay.

Performance from the Wright engines allowed the aircraft to reach speeds nearing 285 miles per hour while cruising at around 210 miles per hour. Range was out to 1,400 miles and a service ceiling of 31,600 feet could be met. An altitude of 10,000 feet was had in about 6.5 minutes.

Compared to the B-18, the B-23 offered better performance, was given an improved defensive armament fit, and featured an increased wingspan. Its prototype went airborne for the first time on July 27th, 1939 - just months ahead of the official start of World War 2 in Europe (September 1st). Serial production was begun that same month and ended in September of 1940 with all 38 aircraft completed.

By the time of the American entry into the war, the B-23 had already met its performance match as newer, better medium types were taken into USAAC service. As such, the B-23 was never seen as an active combat performer during the war but instead relegated for service use as a trainer, stateside maritime patrol, and transport. In the latter role, it became the "C-67" and was redesignated to "UC-67" in 1943. At least twelve were converted to transports from the existing B-23 stock. Other airframes were set aside, modified, and used in various aeronautical-related tests.

Those that survived the war were eventually sold off and entered extended service lives in the civilian market. A few remain as showpieces around the United States today.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Douglas B-23 Dragon Medium Bomber / Maritime Patrol / Crew Trainer Aircraft.
2 x Wright R-2600-3 radial piston engines developing 1,600 horsepower each driving three-bladed propeller units in puller fashion.
283 mph
455 kph | 246 kts
Max Speed
31,611 ft
9,635 m | 6 miles
Service Ceiling
1,401 miles
2,255 km | 1,218 nm
Operational Range
1,500 ft/min
457 m/min
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
The nose-to-tail, wingtip-to-wingtip physical qualities of the Douglas B-23 Dragon Medium Bomber / Maritime Patrol / Crew Trainer Aircraft.
58.4 ft
17.80 m
O/A Length
92.0 ft
(28.04 m)
O/A Width
18.4 ft
(5.60 m)
O/A Height
19,092 lb
(8,660 kg)
Empty Weight
32,408 lb
(14,700 kg)
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
Available supported armament and special-mission equipment featured in the design of the Douglas B-23 Dragon Medium Bomber / Maritime Patrol / Crew Trainer Aircraft .
3 x 0.30 caliber machine guns.
1 x 0.50 caliber machine gun at tail position.

Up to 2,000lb of conventional drop bombs held in an internal bomb bay.
Notable series variants as part of the Douglas B-23 Dragon family line.
B-23 - Base Series Designation; definitive production model; 38 examples completed.
C-67 - Utility transport model converted from B-23 airframes; 12 examples completed.
UC-67 - Redesignation of C-67 aircraft from 1943 onward.
Global customers who have evaluated and/or operated the Douglas B-23 Dragon. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 38 Units

Contractor(s): Douglas Aircraft Company - USA
National flag of the United States

[ United States ]
Relative Max Speed
Hi: 300mph
Lo: 150mph
Aircraft Max Listed Speed (283mph).

Graph Average of 225 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
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Image of the Douglas B-23 Dragon
Image from the National Museum of the United States Air Force, Dayton, Ohio.
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Image of the Douglas B-23 Dragon
Image from the Public Domain.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Douglas B-23 Dragon Medium Bomber / Maritime Patrol / Crew Trainer Aircraft appears in the following collections:
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