Credit
André Völzke · CC BY-SA 3.0 · Resized · CC BY-SA 3.0 · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
K-MAX · rotors running
Single source52 ft (16 m) rotors running[source]
S-92 · Length
Single sourceConfiguration
| Specification | Kaman K-MAX | Sikorsky S-92 |
|---|---|---|
| Type | Medium lift helicopter[source] | Medium-lift transport/utility helicopter[source] |
| Manufacturer | Kaman Aircraft[source] | Sikorsky Aircraft[source] |
| Status | Production ended, in service[source] | In service[source] |
| Manufactured | 1991–2003, 2015–2023[source] | 1998–present[source] |
68 ft 6 in (20.88 m)[source]
K-MAX · 1 × Honeywell T5317A-1 turboshaft engine, 1,350 shp ( ) flat rated for take-off up to ~29,000 ft (8,839 m) to increase transmission life
Single source1 × Honeywell T5317A-1 turboshaft engine, 1,350 shp (1,010 kW) flat rated for take-off up to ~29,000 ft (8,839 m) to increase transmission life[source]
S-92 · 2 × General Electric CT7-8A turboshaft engines, 2,520 shp ( ) each
Single source2 × General Electric CT7-8A turboshaft engines, 2,520 shp (1,880 kW) each[source]
K-MAX · 2,500 ft/min ( ) at Sea Level with flat-rated torque
Single source2,500 ft/min (13 m/s) at Sea Level with flat-rated torque[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| First flight | December 23, 1991[source] | December 23, 1998[source] |
|---|
| Fuel capacity | 1,541 lb (699 kg) / 228.5 US gal (190 imp gal; 865 L)[source] | — |
|---|
| Length of fuselage | 41 ft 9 in (12.73 m)[source] | — |
|---|
| Main rotor area | 3,669 sq ft (340.9 m 2 )[source] | 2,492.3 sq ft (231.54 m 2 )[source] |
|---|
| Blade section | - root: NACA 23012 ; tip: NACA 23011[source] | - root: Sikorsky SC2110; tip: Sikorsky SSC-A09[source] |
|---|
| Never exceed speed | 100 kn (120 mph, 190 km/h) clean[source] | — |
|---|
| Hover ceiling IGE | 26,300 ft (8,016 m) at 6,000 lb (2,722 kg) AUW, ISA[source] | — |
|---|
| Disk loading | 3.52 lb/sq ft (17.2 kg/m 2 )[source] | 9.8 lb/sq ft (48 kg/m 2 )[source] |
|---|
| Power/mass | 0.1045 hp/lb (0.1718 kW/kg)[source] | 0.23 hp/lb (0.38 kW/kg)[source] |
|---|
| Fuel consumption | 85 gal/h (71 imp gal/h; 322 L/h)[source] | — |
|---|
| Capacity | 6,000 lb (2,722 kg) external load at ISA +15 °C (59.0 °F) at sea level 5,663 lb (2,569 kg) external load at ISA +15 °C (59.0 °F) at 5,000 ft (1,524 m) 5,163 lb (2,342 kg) external load at ISA +15 °C (59.0 °F) at 10,000 ft (3,048 m) 5,013 lb (2,274 kg) external load at ISA +15 °C (59.0 °F) at 12,100 ft (3,688 m) 4,313 lb (1,956 kg) external load at ISA +15 °C (59.0 °F) at 15,000 ft (4,572 m)[source] | 19 passengers[source] |
|---|
| National origin | — | United States[source] |
|---|
| Primary users | — | CHC Helicopter Petroleum Helicopters International Bristow Helicopters Cougar Helicopters[source] |
|---|
| Number built | — | at least 300[source] |
|---|
| Introduction date | — | 2004[source] |
|---|
| Developed from | — | Sikorsky S-70[source] |
|---|
| Variants | — | Sikorsky CH-148 Cyclone Sikorsky VH-92[source] |
|---|
| Cabin dimensions | — | 20 ft (6 m) long by 6.6 ft (2 m) tall[source] |
|---|
Maximum take-off; S-92 · Max takeoff weight
Single source