List of Different Types of Airplanes in the World
Boeing XB-39 Superfortress - airplanes
Boeing XB-39 Superfortress
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.
Le Boeing XB-39 Superfortress est un prototype de bombardier américain issu de la conversion d'un B-29. Les moteurs Wright R-3350 Cyclone du B-29 sont remplacés par des Allison V-3420-11. Le XB-39 effectue son premier vol le .1
Made by Boeing.
It is the successor of the Boeing B-29 Superfortress .
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.2
Jet Or Prop
prop
Height Alt
8.46 m
Predecessor
Boeing B-29 Superfortress
Length Alt
30.18 m
Max Takeoff Weight Main
133500.0
Power Alt
1600.0
Lists
* List of bomber aircraft* List of military aircraft of the United States
Range Main
6
290 mi
Loaded Weight Main
120000.0
Max Speed Alt
351
Type Of Prop
liquid-cooled X24 engines
Loading Main
69
Power/mass Main
262.8
Developed From
Boeing B-29 Superfortress
Bombs
20000.0
Height Main
845.82
Max Speed Main
405 mph
Max Takeoff Weight Alt
60560.0
Ceiling Main
35000.0
Number Built
1
Crew
10
Span Main
4305.3
Area Main
1736.0
Primary user
Span Alt
43.05 m
Plane Or Copter?
Engine(prop)
Allison V-3420-11
Manufacturer
Number Of Props
4
First Flight
1944
Production End Year
1944
Loaded Weight Alt
54000.0
Power Main
2
100 hp
Production Start Year
1944
Power/mass Alt
121
Guns
1200.0
Empty Weight Alt
33800.0
Length Main
3017.52
Area Alt
161.3 m²
Range Alt
5460
Related
* B-29 Superfortress* XB-44 Superfortress* B-50 Superfortress
Empty Weight Main
74500.0
Ceiling Alt
11
000 m
Category
Produced
1944
Loading Alt
338