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At a glance
Measured figures
F28F · Length
Single source29 ft 3 in (8.92 m)[source]
Sea King HAS.5 · Length
Single sourceConfiguration
| Specification | Enstrom F-28 | Westland Sea King |
|---|---|---|
| Type | Light helicopter[source] | Anti-submarine warfare , medium-lift transport and utility helicopter[source] |
| Manufacturer | Enstrom Helicopter Corporation[source] | Westland Helicopters[source] |
| Manufactured | 1965-present[source] | 1969–1995[source] |
| Introduction date | 1965[source] | — |
55 ft 10 in (17.02 m)[source]
Cruise; F28F · econ cruise
Single sourceMaximum; F28F · Maximum speed
Single source97 kn (112 mph, 180 km/h)[source]
89 kn (102 mph, 165 km/h) (econ cruise)[source]
Cruise; Sea King HAS.5 · max cruise at sea level
Single source112 kn (129 mph, 207 km/h) (max cruise at sea level)[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]
Sea King HAS.5 · 2 × Rolls-Royce H.1400-2 Gnome turboshaft engines, 1,660 shp ( ) each
Single source2 × Rolls-Royce H.1400-2 Gnome turboshaft engines, 1,660 shp (1,240 kW) each[source]
F28F · Endurance
Single source3 hr 30 min[source]
F28F · Service ceiling
Single source12,000 ft (3,700 m)[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] | — |
|---|
| Main rotor area | 804 sq ft (74.7 m 2 ) NACA 0013.5[source] | 3,020 sq ft (281 m 2 )[source] |
|---|
| Country of origin | Vereinigte Staaten[source]Country of design · Entwurfsland | — |
|---|
| Status | — | Active service[source] |
|---|
| Primary users | — | Royal Navy (Retired) Royal Air Force (Retired) German Navy (Retired) Indian Navy[source] |
|---|
| Number built | — | 344 (Westland Sea King) / 13 (Westland Sea King AEW Mk.2/ASac MK.7 variant)[source] |
|---|
| First flight | — | Sea King: 7 May 1969 Commando: 26 September 1979[source] |
|---|
| Developed from | — | Sikorsky SH-3 Sea King[source] |
|---|
| Blade section | — | NACA 0012[source] |
|---|
| National origin | — | United Kingdom[source] |
|---|
Maximum take-off; Sea King HAS.5 · Max takeoff weight
Single source