About: Boeing XB-39 Superfortress

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An Entity of Type : dbkwik:resource/AGhloO_nVTaFp7GvOmHv5Q==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The Boeing XB-39 Superfortress was a United States prototype bomber aircraft, a single example of the B-29 Superfortress converted to fly with alternative powerplants. It was intended to demonstrate that the B-29 could still be put into service even if the first choice of engine, the air-cooled Wright R-3350 radial engine, ran into development or production difficulties.

Attributes	Values
rdf:type	Aircraft Type
rdfs:label	Boeing XB-39 Superfortress
rdfs:comment	The Boeing XB-39 Superfortress was a United States prototype bomber aircraft, a single example of the B-29 Superfortress converted to fly with alternative powerplants. It was intended to demonstrate that the B-29 could still be put into service even if the first choice of engine, the air-cooled Wright R-3350 radial engine, ran into development or production difficulties.
sameAs	dbr:Boeing_XB-39_Superfortress
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max takeoff weight alt	60560.0
loaded weight main	120000.0
Guns	8× .50 in Browning M2 machine guns in remote controlled turrets 2× .50 in machine guns in manual turrets ** 1× 20 mm M2 cannon in tail
number of props	4(xsd:integer)
length alt	30.18 m
span main	4305.3
power/mass alt	121(xsd:integer)
Produced	1944(xsd:integer)
height alt	8.46 m
primary user	United States Army Air Forces
Type	dbkwik:resource/X9vR24_jFpi4-c37vDnZUQ==
type of prop	liquid-cooled W24 engines
loading main	69(xsd:double)
range alt	5460(xsd:integer)
length main	3017.52
power alt	1600.0
area main	1736.0
power main	2100.0
bombs	20000.0
height main	845.82
span alt	43.05 m
range main	6290.0
Manufacturer	Boeing
max speed main	405.0
engine (prop)	Allison V-3420-11
power/mass main	0(xsd:double)
ceiling main	35000.0
empty weight main	74500.0
loaded weight alt	54000.0
Developed From	B-29 Superfortress
area alt	161.3
First Flight	1944(xsd:integer)
max speed alt	351(xsd:integer)
jet or prop?	prop
loading alt	337(xsd:double)
empty weight alt	33800.0
plane or copter?	plane
ceiling alt	11,000 m
max takeoff weight main	133500.0
Crew	10(xsd:integer)
Number Built	1(xsd:integer)
abstract	The Boeing XB-39 Superfortress was a United States prototype bomber aircraft, a single example of the B-29 Superfortress converted to fly with alternative powerplants. It was intended to demonstrate that the B-29 could still be put into service even if the first choice of engine, the air-cooled Wright R-3350 radial engine, ran into development or production difficulties.

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