Sikorsky CH-54 Tarhe
|A CH-54A carrying a parachute bomb|
|Role||Heavy-lift cargo helicopter|
|First flight||9 May 1962|
|Primary user||United States Army|
The Sikorsky CH-54 Tarhe is a twin-engine heavy-lift helicopter designed by Sikorsky Aircraft for the United States Army. It is named after Tarhe (whose nickname was "The Crane"), an 18th-century chief of the Wyandot Indian tribe. The civil version is the S-64 Skycrane.
The first flight of the turboshaft-powered S-64 Skycrane was 9 May 1962, with the United States Army eventually purchasing 105, designating them CH-54. Used in Vietnam for transport and downed-aircraft retrieval, it was highly successful, thanks to the 'adaptable' nature of the module system first conceived by General James M. Gavin in his book Airborne Warfare in 1947. Early pods could not carry troops and external sling-loads at the same time. Advanced pods for the CH-54 could carry troops and cargo underslung at the same time but were not purchased. As of 2014[update], it holds the record for highest altitude in level flight (11 km in 1971) and fastest climb to 3, 6 and 9 km.
The Skycrane can not only hold its cargo up and tight against its center spine to lessen drag and eliminate the pendulum effect when flying forward, it can winch vehicles up and down from a hovering position, so the helicopter does not need to land. Due to budget cuts the Heavy Lift Helicopter (HLH) program was canceled and the CH-54s not upgraded with larger engines. The Boeing CH-47 Chinook gradually supplemented it in combat and eventually replaced it in Regular Army aviation units, although CH-54 Skycranes remained in Army National Guard service until the early 1990s. The Soviet Union also created much larger crane helicopters with a similar skeletal design.
Today, Erickson Air-Crane of Central Point, Oregon operates the largest fleet of S-64 helicopters in the world under the name Erickson S-64 Aircrane, which can be equipped with water-dropping equipment (some also have foam/gel capability) for firefighting duties worldwide. After obtaining the type certificate and manufacturing rights in 1992, Erickson remains the manufacturer and world's largest operator of S-64s.
- Pre-production aircraft, six built.
- Production model powered by two 4,500 shp (3,400 kW) Pratt & Whitney T73-P-1 turboshafts, 54 built.
- Heavier version of the CH-54A with two 4,800 shp (3,600 kW) T-73-P-700 turboshafts and twin-wheeled main undercarriage, 37 built.
A large number of surviving airframes exist in flyable condition as well as in museum collections worldwide.
- Crew: 3
- Payload: 20,000 lb (9,072 kg)
- Length: 88 ft 6 in (26.97 m)
- Rotor diameter: 72 ft 0 in (21.95 m)
- Height: 25 ft 5 in (7.75 m)
- Disc area: 4071.5 ft² (378.24 m²)
- Empty weight: 19,800 lb (8,980 kg)
- Max. takeoff weight: 47,000 lb (21,000 kg)
- Powerplant: 2 × Pratt & Whitney T73-P-700 turboshaft engines, 4,800 shp (3,580 kW) each
- Maximum speed: 130 kn (150 mph, 240 km/h)
- Cruise speed: 100 kn (115 mph, 185 km/h)
- Range: 200 NM (230 mi, 370 km)
- Service ceiling: 18,330 ft (5,600 m)
- Rate of climb: 1,330 ft/min (6.75 m/s)
- Related development
- Aircraft of comparable role, configuration and era
- Related lists
- Ohio History Central page on Tarhe
- Taylor 1976, p.386.
- "FAI Record ID #9918 - Altitude in horizontal flight. Class E-1 (Helicopters), turbine" Fédération Aéronautique Internationale (FAI). Retrieved: 21 September 2014.
- "FAI Record ID #9942 - Time to climb to a height of 3 000 m. Class E-1 (Helicopters), turbine" Fédération Aéronautique Internationale (FAI). Retrieved: 21 September 2014.
- "FAI Record ID #9957 - Time to climb to a height of 6 000 m. Class E-1 (Helicopters), turbine" Fédération Aéronautique Internationale (FAI). Retrieved: 21 September 2014.
- "FAI Record ID #9960 - Time to climb to a height of 9 000 m. Class E-1 (Helicopters), turbine" Fédération Aéronautique Internationale (FAI). Retrieved: 21 September 2014.
- Harding 1990, p.243.
- "What Is a Helicopter?". nasa.gov. Retrieved 26 January 2013.
- "Sikorsky CH – 54B Skycrane Helicopter". nasa.gov. Retrieved 26 January 2013.
- "Sikorsky CH-54 Tarhe Flying crane". www.Military-Today.com. Retrieved 26 January 2013.
- Francillon, René J. (Spring 1991). "The Army Guard's Weightlifter". World Air Power Journal 5: 36–41.
- Harding, Stephen (1990). U.S. Army Aircraft Since 1947. Shrewsbury, UK: Airlife. ISBN 1-85310-102-8.
- Taylor, John W. R. (1976). Jane's All The World's Aircraft 1976–77. London: Jane's Yearbooks. ISBN 0-354-00538-3.
|Wikimedia Commons has media related to CH-54 Tarhe (Skycrane).|
- CH-54 U.S. Army Aviation history fact sheet
- CH-54 Skycrane/Tarhe on Global Security.org
- The short film STAFF FILM REPORT 66-2A (1966) is available for free download at the Internet Archive
- The short film STAFF FILM REPORT 66-21A (1966) is available for free download at the Internet Archive
- HELIS.com Sikorsky S-64/CH-54 Database