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Schematic diagram showing the operation of a simplified turboshaft engine. The compressor spool is shown in green and the free / power spool is in purple.
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Aircraft propulsion
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Gas turbine used to spin a shaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaft horsepower rather than jet thrust. In concept, turboshaft engines are very similar to turbojets, with additional turbine expansion to extract heat energy from the exhaust and convert it into output shaft power. They are even more similar to turboprops, with only minor differences, and a single engine is often sold in both forms.
Turboshaft engines are commonly used in applications that require a sustained high power output, high reliability, small size, and light weight. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment.
A turboshaft engine is a form of gas turbine that is optimized to produce shaft horsepower rather than jet thrust. In concept, turboshaft engines are...
The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and fixed-wing aircraft (in turboprop...
family of turboshaft and turboprop engines in the 1,500–3,000 shp (1,100–2,200 kW) class. In 1967, General Electric began work on a new turboshaft engine...
rocket-propelled aircraft exceeds the speed of sound. 1948: 100 shp 782, the first turboshaft engine to be applied to aircraft use; in 1950 used to develop the larger...
Turbomeca, is a French manufacturer of low- and medium-power gas turbine turboshaft engines for helicopters. The company also produces gas turbine engines...
Panther. Early models were powered by a pair of Turbomeca Arriel 1M1 turboshaft engines; in 1995, Eurocopter began offering higher powered versions of...
HTS900/LTS101 family of turboshaft engines have accumulated nine million flight hours of operation in helicopters. The T800 turboshaft engine is a product...
be a single General Electric T901 turboshaft engine, with supplemental power from a Pratt & Whitney PW207D1 turboshaft. The US Army requirement calls for...
The Turbomeca Arriel is a series of French turboshaft engines that first ran in 1974. Delivering 650 to 1,000 hp (480 to 750 kW), over 12,000 Arriel engines...
September 1977. It was fitted with two 1,330 kW Turbomeca Makila 1A1 turboshaft engines, composite rotor blades, improved landing gear and a modified...
also required to drive a helicopter rotor or land-vehicle transmission (turboshaft), marine propeller or electrical generator (power turbine). Greater thrust-to-weight...
Cobra gunship for the US Army, with one 1,400 shp Avco Lycoming T53-13 turboshaft. JAH-1G One Cobra helicopter modified for armament testing, including...
M250, (US military designations T63 and T703) is a highly successful turboshaft engine family, originally developed by the Allison Engine Company in the...
achievement in aviation. Other successes followed, including the T58 and T64 turboshaft engines, the J85 turbojet, and F404 turbofan. Starting in 1961, General...
The Turbomeca Arrius is one of a family of turboshaft engines for helicopter use, first produced in 1981. As of 2012, some 2,700 units had been sold. Power...
SA 365 N2, which was equipped with more powerful Turbomeca Arriel 1C2 turboshaft engines. In January 1990, the overall type was formally redesignated as...
The LHTEC T800 is a turboshaft engine for rotary wing applications. It is produced by the LHTEC (Light Helicopter Turbine Engine Company), a joint venture...
rocket engine (in production, used on C25 upperstage of LVM-3) Shakti — a turboshaft engine for HAL Dhruv Helicopter, co-developed with Safran Helicopter Engines...
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