Intended as a large-capacity transport craft for military or civilian use, it would have a wingspan of 500 feet (150 m), a cargo capacity of 1,400 tons (1,300 metric tonnes), and a range of about 10,000 nautical miles (18,000 km). Powered by four turboprop engines, its main mode would be to fly 20-50 ft (6-15 m) over water, though it would also be capable of overland flight at an altitude as high as 20,000 ft (6,100 m) albeit with a decreased range of about 6,500 nautical miles (12,000 km). It would operate from conventional runways, with its weight distributed over 38 fuselage-mounted landing gears with 76 wheels.
General characteristics
Length: 400 ft (122 m)
Wingspan: 500 ft (152 m)
Height: 18.3 ft (fuselage bay interior) (6 m)
Wing area: > 1 acre (>4,000 square meters[1])
Useful load: 2,800,000 lb (1,400 tons) (1,272,727 kg (1,273 metric tonnes))
Powerplant: 4 × , () each
Cruise speed: 240 kts in ground effect (445 km/h)
Source:
http://en.wikipedia.org/wiki/Boeing_Pelican
http://www.editinternational.com/read.php?id=47ddf0fe4b9ca