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Douglas XB-43 Jetmaster


Experimental Bomber Aircraft (1946)


Aviation / Aerospace

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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.
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Image from the National Museum of the United States Air Force, Dayton, Ohio archives.

Jump-to: Specifications

The three-man Douglas XB-43 Jetmaster existed only through a pair of prototypes - the first flying in May of 1946.



Authored By: Staff Writer | Last Edited: 05/31/2016 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
Born from the XB-42 "Mixmaster" program - which sought a unique solution for a budget-conscious medium bomber platform alternative to the large and expensive Boeing B-29 "Superfortress" - the Douglas XB-43 "Jetmaster" was an evolved, jet-powered offshoot of the original design. The earlier XB-42 was powered by a pair of Allison inline engines arranged in a "pusher" setup at the rear of the aircraft which promoted speed gains over a traditional configuration. This left the forward / middle fuselage and wings clear of any mechanical obstructions and resulted in a more streamlined shape. At one point, the XB-42 was fitted with Westinghouse axial-flow turbojets which advanced it along altogether different lines. While neither design was adopted (two prototypes were completed), it did lay the foundation for the XB-43 which substituted the Westinghouse powerplants with a pair of General Electric J35 series engines. Two flyable XB-43 prototypes then emerged.

The XB-43 was more-or-less an add-on project to the in-development XB-42. The airframe proved feasible for the study of jet propulsion in a medium-sized bomber airframe so an agreement between the United States Army Air Force (USAAF) and Douglas Aircraft was had in March of 1944 with World War 2 (1939-1945) still ongoing. The aircraft resembled the XB-42 airframe on the whole while the inline engines were given up for the General Electric turbojets. Engineers added a pair of intakes along either side of the fuselage near the wingroots and exhaust ports took up the space where the propeller units once lay at the rear. The aircraft retained its single dorsal vertical tail fin (the ventral fin was deleted while the dorsal fin was enlarged), retractable tricycle undercarriage, and two-man cockpit arrangement. The nose section was glazed over for a bombardier's position bringing the operating crew total to three. Proposed defensive armament was 2 x 12.7mm heavy machine guns held in a remote-controlled tail turret though this was never fitted. The bomb load was to total 8,000 pounds. An attack variant (possibly designated as "A-43") was entertained that would have fitted multiple machine guns in the nose with the bombardier's position omitted and covered over. Additional weapons support in this version would have been added for underwing rockets.

Due to the limited availability of the GE J35 engines, the XB-43 product languished for several years before the aircraft could be flown. When fitted with its jets the aircraft suffered damage during ground running tests which saw one engine explode. A first flight was finally recorded on May 17th, 1946 but, by this time, World War 2 (1939-1945) had ended and many promising programs fell under the axe of the massive military drawdown that followed. The second prototype (given the developmental designation of "YB-43") followed in flyable form during 1947. The original J35 turbojets were then upgraded with J47 series engines.

The first prototype - s/n 44-61508 - was eventually cannibalized for its useful parts (to serve the second) and given up as a target. The second prototype - s/n 44-61509 managed a rather healthy test life until December of 1953. By this time, the now-USAF (the United States Army Air Force was renamed after World War 2) focused its energies on dedicated jet-powered bomber developments and not simply modified propeller-driven forms. This led to the cancellation of the XB-43 project in whole - the aircraft passed on for preservation to the National Museum of the United States Air Force (Dayton, Ohio).

As completed, the XB-43 exhibited a length of 15.7 meters, a wingspan of 21.7 meters, and a height of 7.4 meters. Its empty weight was 22,900 lb with a Maximum Take-Off Weight (MTOW) of 40,000 lb. Power was originally from 2 x General Electric J35-GE-3 turbojet engines of 4,000 lb thrust each. Maximum speed was recorded to be 507 miles per hour with a range out to 2,500 miles, and a service ceiling nearing 38,500 feet (requiring use of a pressurized crew cabin). Rate-of-climb reached 2,470 feet-per-minute.

Specifications



Service Year
1946

Origin
United States national flag graphic
United States

Crew
3

Production
2
UNITS


Douglas Aircraft Company - USA
National flag of the United States United States (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
51.5 ft
(15.70 m)
Width/Span
71.2 ft
(21.70 m)
Height
24.3 ft
(7.40 m)
Empty Wgt
22,884 lb
(10,380 kg)
MTOW
39,683 lb
(18,000 kg)
Wgt Diff
+16,799 lb
(+7,620 kg)
(Showcased structural values pertain to the base Douglas XB-43 Jetmaster production variant)
Installed: 2 x General Electric J35-GE-3 turbojet engines developing 4,000lb of thrust each.
Max Speed
506 mph
(815 kph | 440 kts)
Ceiling
38,386 ft
(11,700 m | 7 mi)
Range
2,485 mi
(4,000 km | 7,408 nm)
Rate-of-Climb
2,470 ft/min
(753 m/min)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base Douglas XB-43 Jetmaster production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
PROPOSED (Standard):
2 x 12.7mm heavy machine guns in remote-controlled tail turret.

PROPOSED (Optional):
Up to 8,000lb of conventional drop stores carried.


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft conventional drop bomb munition


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 0


XB-43 "Jetmaster" - Base Series Name; 2 prototypes complete.
YB-43 - U.S. Army designation for XB-43 prototype
A-43 - Proposed attack form featuring 8 x 12.7mm heavy machine guns in the nose now lacking the bombardier's station.


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