Tech Spec's
Prop-Liners of America , Inc.
58 Lindbergh Drive
Brainard Airport
Hartford, CT 06114
Phone:860-684-4988 Email: wbradshaw@prop-liners.com
Sikorsky S-56 Technical Specifications
| First Flight: | N/A |
| Number Built: | N/A |
| Fuselage Length: | 64 feet 11 inches |
| Fuselage Width: | 9 feet |
| Main Rotor Diameter: | 72 feet |
| Tail Rotor Diameter: | 15 feet 6 inches |
| Height: | 22 feet |
| Max Gross Wt.: | 31,000 lbs. |
| Empty Wt.: | 20,000 lbs. |
| Useful Load: | 11,000 lbs. |
| Max Cruising Speed: | 145 mph 126 kts |
| Normal Cruising Speed: | 120 mph 104 kts |
| Service Ceiling: | N/A |
| Fuel Capacity: | 404 US gallons |
| Range: | 240 miles |
| Fuel Type: | 100/130 octane |
| Fuel Consumption: | 200 gph |
| Engine: | 2 Pratt & Whitney R-2800-54 |
| Seating: | 24 passengers |
| Crew: | 2 Pilots |
Engine Specifications |
Pratt & Whitney R-2800-54 |
| Type: | 18 cylinder air cooled radial |
| Length: | 81.4 inches |
| Diameter: | 52.8 inches |
| Bore: | 5.75 inches |
| Stroke: | 6.0 inches |
| Displacement: | 2804 cubic inches |
| Compression Ratio: | 6.75 to 1 |
| Dry Weight: | 2390 lbs. |
| Ignition: | Scintilla DLN-10 low tension |
| Fuel Grade: | 100/130 octane |
| Carburation: | Stromberg PR-58E5 |
| Performance: | Take-Off: 2100 HP Normal Rating: 1900 HP |