 |
| Official
Designation |
HK-1 (H-4) Hercules Flying Boat |
| Unofficial
Nicknames |
The Spruce Goose, Flying Lumberyard |
| Primary
Role |
Military transport |
| National
Origin |
USA |
| Original
Contractor |
Hughes Aircraft Company |
| Wingspan |
320 feet |
| Wing Area |
11,430 square feet |
| Length |
218 feet, 6 inches |
| Height
at
Tail |
80 feet |
| Tailspan |
113 feet, 6 inches |
| Height of Fuselage |
30 feet, 6 inches |
| Width of Fuselage |
24 feet, 5 inches |
| Volume of Cargo Hold |
165,000 cubic feet |
| Armament |
None |
| Engines |
Eight Pratt & Whitney R-4360 Wasp Major radials (largest radial reciprocating engines ever built) |
| Horsepower |
3,000 shp each |
| Propellers |
Eight four-bladed Hamilton Standards with a diameter of 17 feet, 2 inches (the four inboard propellers have reverse pitch capability) |
| Cruise
Speed (est.) |
175 mph |
| Max
Speed (est.) |
218 mph |
| Range (est.) |
3,000 miles (flew one mile during first and only flight) |
| Service
Ceiling (est.) |
20,900 feet |
| Gross Weight |
400,000 pounds |
| Max
Payload |
130,000 pounds |
| Total Cost |
$40 million |
| First Flight |
2 November 1947 |
| Total
Produced |
One aircraft |
|
|
|
|
|
