Comparison of Boeing B-47 Stratojet and NAA XB-70 Valkyrie

Attribute	NAA XB-70 Valkyrie ×	Boeing B-47 Stratojet ×
General
Manufacturer	North American Aviation NAA	Boeing
Model	NAA XB-70 Valkyrie	Boeing B-47 Stratojet
Country	United States	United States
Manufactured from (year)	1964	1947
Manufactured to (year)	1969	1957
Type	Military Aircraft	Military Propellor Planes
Icao	XB70	B47
Performance
Engine	6x 6 × General Electric YJ93-GE-3 afterburning	6x General Electric J47-GE-25
Power, lbf (lbf)	30,000	7,200
Avionics	-	AN/APG-39, AN/APG-32, AN/APD-4 etc.
Max cruise speed (km/h)	3,217	976
Travel range (km)	6,901	7,478
Fuel economy (km/l)	0.068	-
Service ceiling (m)	23,576	12,344
Rate of climb (m/sec)	36.42	22.1
Take off distance (m)	2,256	2,240
Weights
Max take off weight (kg)	245,847	104,310
Max payload (kg)	9,072	11,340
Fuel tank capacity (l)	136,074	64,352
Dimensions
Seats	2	3
Exterior length (m)	56.6	32.64
Tail height (m)	9.1	8.53
Fuselage diameter (m)	-	2.8
Wing span (m)	32	35.36
Wing tips	No Winglets	No Winglets