Boeing 747
The 747 is a quadjet, initially powered by JT9D turbofan engines, then GE CF6 and Rolls-Royce RB211 engines for the original variants. With a ten-abreast economy seating, it typically accommodates 366 passengers in three travel classes. It has a pronounced 37.5° wing sweep, allowing a cruise speed, and its heavy weight is supported by four main landing gear legs with four-wheel bogies each. The partial double-deck aircraft was designed with a raised cockpit so it could be converted to a freighter airplane by installing a front cargo door, as it was initially thought that it would eventually be superseded by supersonic transports.
Q2523684
quadjet
MISC
Q2107978
JT9D
MISC
+9^^http://www.w3.org/2001/XMLSchema#decimal
9
NUMBER
Q654051
turbofan
Concept
Q1501579
GE CF6
Concept
+6^^http://www.w3.org/2001/XMLSchema#decimal
6
NUMBER
Q1636078
Rolls-Royce RB211
Concept
+211^^http://www.w3.org/2001/XMLSchema#decimal
211
NUMBER
Q814267
travel class
Concept
+37.5^^http://www.w3.org/2001/XMLSchema#decimal
37.5
NUMBER
Q1929294
wing sweep
UNK
Q2063640
cruise speed
Concept
Q217421
bogie
Concept
Q572621
double-deck aircraft
UNK
Q19799
freighter airplane
Concept
Q1239346
supersonic transport
Concept
Q2107978
JT9D
MISC
Q654051
turbofan
Concept