Piasecki H-21
Technical Specifications
| First Flight: |
April 11, 1952 |
| Number Built: |
500+ for military and commercial service |
| Length: |
86 feet 4 inches |
| Rotor Diameter: |
2 @ 44 feet 6 inches each |
| Height: |
16 feet |
| Max Take-Off Wt.: |
13,300 lbs. |
| Empty Wt.: |
8,000 lbs. |
| Max Cruising Speed: |
135 mph 117 kts |
| Normal Cruising Speed: |
98 mph 85 kts |
| Service Ceiling: |
10,000 feet |
| Fuel Capacity: |
300 US gallons |
| Range: |
450 miles |
| Fuel Type: |
100/130 octane |
| Fuel Consumption: |
N/A |
| Engine: |
1 Wright R-1820-103 rated @ 1425 HP |
| Seating: |
19 Passengers |
| Crew: |
2 Pilots |
Engine Specifications
|
Wright
R-1820-103
|
| Type: |
9 cylinder air cooled radial |
| Length: |
48.35 inches |
| Diameter: |
55.25 inches |
| Bore: |
6.125 inches |
| Stroke: |
6.875 inches |
| Displacement: |
1820 cubic inches |
| Compression Ratio: |
6.80 to 1 |
| Dry Weight: |
1362 lbs. |
| Ignition: |
Magnetos; Bosch S9LU-3 |
| Fuel Grade: |
100/130 octane |
| Carburation: |
Bendix PD-12K19 |
| Performance: |
Take-Off: 1425 HP @ 2700 RPM
Normal: 1275 HP @ 2500 RPM |
|