Credit
Original uploader was User:Ahunt at en:wikipedia · Public domain · Resized · Public domain · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
F28F · Length
Single source29 ft 3 in (8.92 m)[source]
R22 · Length
Single sourceConfiguration
| Specification | Enstrom F-28 | Robinson R22 |
|---|---|---|
| Crew | one[source] | 1/2[source] |
| Type | Light helicopter[source] | Light utility and trainer helicopter[source]R22 |
| Manufacturer | Enstrom Helicopter Corporation[source] | Robinson Helicopter Company[source]R22 |
| Manufactured | 1965-present[source] | 1979–present |
28 ft 8 in (8.74 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]
R22 · 1 × Lycoming O-320-A2B or -A2C 4-cylinder air-cooled horizontally-opposed piston engine
Single source1 × Lycoming O-320-A2B or -A2C 4-cylinder air-cooled horizontally-opposed piston engine, 124 hp (92 kW)[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.
| Introduction date | 1965[source] | 1979[source]R22 |
|---|
| Variants | Enstrom TH180 Spitfire Mark I[source] | — |
|---|
| Developed into | Enstrom 480[source] | Robinson R44[source]R22 |
|---|
| Capacity | two passengers[source] | 1/0[source] |
|---|
| Main rotor area | 804 sq ft (74.7 m 2 ) NACA 0013.5[source] | 497 sq ft (46.2 m 2 )[source] |
|---|
| Country of origin | Vereinigte Staaten[source]Country of design · Entwurfsland | — |
|---|
| Designer | — | Frank D. Robinson[source]R22 |
|---|
| Status | — | In production[source]R22 |
|---|
| Number built | — | over 4,800 (2019)[source]R22 |
|---|
| First flight | — | 1975[source]R22 |
|---|
| Fuel capacity | — | Main tank total capacity: 16.9 US gal (14 imp gal; 64 L) Optional auxiliary tank total capacity: 10.9 US gal (9 imp gal; 41 L)[source] |
|---|
| Main tank total capacity | — | 16.9 US gal (14 imp gal; 64 L)[source] |
|---|
| Optional auxiliary tank total capacity | — | 10.9 US gal (9 imp gal; 41 L)[source] |
|---|
| Tail rotor diameter | — | 3 ft 6 in (1.1 m)[source] |
|---|
| Blade section | — | - NACA 63-015[source] |
|---|
| Never exceed speed | — | 102 kn (117 mph, 189 km/h)[source] |
|---|
| Disk loading | — | 2.61 lb/sq ft (12.7 kg/m 2 )[source] |
|---|
| Power/mass | — | 0.095 hp/lb (0.156 kW/kg)[source] |
|---|
| Fuel consumption | — | 8–10 gal/h (7–8 imp gal/h; 30–38 L/h)[source] |
|---|