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At a glance
Measured figures
Chinook HC6A · Length
Single sourceChinook / RAF specification (variant not stated) · Length · Length
Single source98 ft 9 in (30.10 m)[source]
30.14m[source]Chinook / RAF specification (variant not stated) · Length
Sikorsky S-76C++ · from tip of main rotor to tip of tail rotor
Single source52 ft 6 in (16 m) from tip of main rotor to tip of tail rotor[source]
Sikorsky S-76C++ · at horizontal stabilizer
Single source10 ft 0 in (3.05 m) at horizontal stabilizer[source]
Chinook HC6A · 2 ×
Single sourceChinook / RAF specification (variant not stated) · Rotor diameter · Rotor
Single source2 × 60 ft 0 in (18.29 m)[source]
18.29m[source]Chinook / RAF specification (variant not stated) · Rotor
Sikorsky S-76C++ · Main rotor diameter
Single source44 ft 0 in (13.41 m)[source]
Chinook HC6A · Height
Single sourceChinook / RAF specification (variant not stated) · Height · Height
Single source18 ft 8 in (5.69 m)[source]
5.77m[source]Chinook / RAF specification (variant not stated) · Height
Sikorsky S-76C++ · to tip of tail rotor
Single source14 ft 6 in (4.42 m) to tip of tail rotor[source]
Empty; Chinook HC6A · Empty weight
Single sourceGross; Chinook HC6A · Gross weight
Single sourceMaximum take-off; Chinook HC6A · Max takeoff weight
Single source22,450 lb (10,183 kg)[source]
26,680 lb (12,102 kg)[source]
50,000 lb (22,680 kg)[source]
Empty; Sikorsky S-76C++ · in utility configuration
Single sourceGross; Sikorsky S-76C++ · Gross weight
Single sourceChinook HC6A · pilot, copilot, two weapon system operators/loadmasters
Single source4 (pilot, copilot, two weapon system operators/loadmasters)[source]
2 Pilots, 2 Weapon System Operators[source]Chinook / RAF specification (variant not stated) · AircrewSource text · numeric interpretation needs review
two[source]
Maximum; Chinook HC6A · Maximum speed
Single sourceMaximum; Chinook / RAF specification (variant not stated) · Maximum speed · Maximum speed
Single source160 kn (180 mph, 300 km/h)[source]
160kt[source]Chinook / RAF specification (variant not stated) · Maximum speed
Cruise; Sikorsky S-76C++ · maximum cruise speed is the same as maximum speed
Single sourceMaximum; Sikorsky S-76C++ · at maximum takeoff weight at sea level in standard atmospheric conditions
Single sourceChinook HC6A · with auxiliary fuel tanks
Single source1,200 nmi (1,400 mi, 2,200 km) with auxiliary fuel tanks[source]
Sikorsky S-76C++ · no reserves, at long-range cruise speed at 4,000 ft altitude
Single source411 nmi (473 mi, 761 km) no reserves, at long-range cruise speed at 4,000 ft altitude[source]
Chinook HC6A · 2 × Honeywell T55-GA-714A turboshaft free-turbine engines, 3,750 shp ( ) each
Single source2 × Honeywell T55-GA-714A turboshaft free-turbine engines, 3,750 shp (2,800 kW) each[source]
Sikorsky S-76C++ · 2 × Turbomeca Arriel 2S2 turboshaft, 922 shp ( ) each
Single source2 × Turbomeca Arriel 2S2 turboshaft, 922 shp (688 kW) each[source]
Chinook HC6A · 1,980 ft/min ( )Thrust 2x 4,168shp each engine
Single source1,980 ft/min (10.1 m/s)Thrust 2x 4,168shp each engine[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Configuration
| Specification | Boeing Chinook (UK variants) | Sikorsky S-76 |
|---|---|---|
| Type | Transport helicopter[source] | Utility helicopter[source] |
| Manufacturer | Boeing Defense, Space & Security[source] | Sikorsky Aircraft[source] |
| Designer | Boeing-Vertol[source] | — |
| Status | In service[source] | In Service[source] |
| Primary user | Royal Air Force[source] | — |
| Number built | 72 (all RAF models)[source] | 875[source] |
| Introduction date | 22 November 1980 (with RAF)[source] | — |
| First flight | 23 March 1980 (HC1)[source] | 13 March 1977 ( 1977-03-13 )[source] |
| Developed from | Boeing CH-47 Chinook[source] | — |
| Variants | HC1, HC1B, HC2, HC3, HC4, HC5, HC6, HC6A, HC7[source] | — |
| Capacity | 55 soldiers and up to 10 tonnes of freight or equipment[source] | 13 passengers[source] |
| Guns | 2× M134 Miniguns and 1× M60 machine gun[source] 2 x M134 Miniguns, 1 x M60 Machine Gun[source]Chinook / RAF specification (variant not stated) · Guns | — |
| Main rotor area | 5,655.2 sq ft (525.39 m 2 )[source] | — |
| Blade section | - root: Boeing VR-7; tip: Boeing VR-8[source] | — |
| Cockpit Avionics | Glass cockpit with a BAE Systems Digital Advanced Flight Control System (DAFCS), includes automatic modes such as auto-hover and auto-descend to ease pilot workload.[source] | — |
| Sensors | Electro-Optical Sensor Turret (EOST) with two infrared cameras and a low-light TV function .[source] EOST turret including two infrared cameras and a low-light TV function[source]Chinook / RAF specification (variant not stated) · Electro optics | — |
| Defensive Aids | Missile Warning Receiver, Infrared Warning Receiver, Radar Warning Receiver, Counter-measure dispensing system (flares).[source] | — |
| Country of origin | United States[source]Boeing Chinook (UK variants) · origin explicitly stated in the linked current national-inventory row; no inference from operator or shipyard | — |
| Powerplant | Two Honeywell 55-L-714A Free-Turbine engines[source]Chinook / RAF specification (variant not stated) · Powerplant | — |
| Reported engine rating | 4,168shp each[source]Chinook / RAF specification (variant not stated) · ThrustSource text · numeric interpretation needs review | — |
| Flight altitude | 15,000ft[source]Chinook / RAF specification (variant not stated) · Maximum altitude | — |
| National origin | — | United States[source] |
| Primary users | — | Bristow Helicopters CHC Helicopter[source] |
| Manufactured | — | 1976–present[source] |
| Variant | — | Sikorsky S-75[source] |
| Fuel capacity | — | 281 US gallons (1,064 liters), with 50 or 102 US gallons (189 or 386 liters) available in extra auxiliary tanks[source] |