Credit
Original uploader was User:Ahunt at en:wikipedia · Public domain · Resized · Public domain · Source ↗ · Modified
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At a glance
Measured figures
F28F · Length
Single source29 ft 3 in (8.92 m)[source]
HH-3E · Length
Single sourceConfiguration
| Specification | Enstrom F-28 | Sikorsky S-61R |
|---|---|---|
| Type | Light helicopter[source] | Medium-lift transport/ Search and Rescue (SAR) helicopter[source] |
| Manufacturer | Enstrom Helicopter Corporation[source] | Sikorsky Agusta[source] |
| Manufactured | 1965-present[source] | 1963–1970s[source] |
| Introduction date | 1965[source] | 1965 |
73 ft (22 m)[source]
F28F · 1 × Lycoming HIO-360-F1AD four-cylinder, direct-drive, horizontally opposed, air-cooled, piston aircraft engine
Single source1 × Lycoming HIO-360-F1AD four-cylinder, direct-drive, horizontally opposed, air-cooled, piston aircraft engine, 225 hp (168 kW)[source]
HH-3E · 2 × General Electric T58-GE-10 turboshaft engines, 1,400 shp ( ) each
Single source2 × General Electric T58-GE-10 turboshaft engines, 1,400 shp (1,000 kW) each[source]
F28F · Endurance
Single source3 hr 30 min[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Variants | Enstrom TH180 Spitfire Mark I[source] | — |
|---|
| Developed into | Enstrom 480[source] | — |
|---|
| Capacity | two passengers[source] | 28 pax / 6,500 lb (2,948 kg) payload[source] |
|---|
| Main rotor area | 804 sq ft (74.7 m 2 ) NACA 0013.5[source] | 3,019 sq ft (280.5 m 2 ) 5-bladed main rotor; blade section NACA 0012[source] |
|---|
| Country of origin | Vereinigte Staaten[source]Country of design · Entwurfsland | États-Unis[source]Design origin explicitly attributed in article text |
|---|
| Status | — | In service[source] |
|---|
| Primary users | — | United States Air Force (Historical) United States Coast Guard (Historical) Italian Air Force (Historical) Tunisian Air Force[source] |
|---|
| First flight | — | 1963[source] |
|---|
| Developed from | — | Sikorsky SH-3 Sea King[source] |
|---|
| Fuel capacity | — | 683 US gal (569 imp gal; 2,590 L)[source] |
|---|
| Guns | — | Door guns on some variants (For information on American equipment, see U.S. Helicopter Armament Subsystems, S-61R )[source] |
|---|
| Disk loading | — | 7.3 lb/sq ft (36 kg/m 2 )[source] |
|---|