The NPO Saturn AL-55 is a high performance turbofan engine manufactured by NPO Saturn Russia, for powering advanced trainers, unmanned aerial vehicles (UAV) and light attack aircraft. A variant of the AL-55I powers the HAL HJT-36 Sitara Indian jet trainer.
| NPO Saturn AL-55 | |
|---|---|
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| The Jet engine AL-55 (The international aerospace salon MAKS-2011) | |
| Type | Turbofan |
| National origin | Russia |
| Manufacturer | NPO Saturn and serial production by Ufa Engine Industrial Association JSC |
| Major applications | Originally designed for HAL HJT-36 Sitara |
Design edit
The design comprises five main features. It has a three-stage low pressure compressor, five stage high pressure chamber, an annular combustion chamber and a single stage high and low pressure turbines.
In August 2005, the Russian export organization known as Rosoboronexport and India's Hindustan Aeronautics Limited (HAL) signed an agreement for the licensed production of up to 1,000 AL-55I engines. The agreement includes a firm order for 250 engines to be manufactured at HAL facilities in India, to power both HAL HJT-36 trainer and HAL HJT 39 combat trainer aircraft.
Variants edit
- AL-55
- AL-55/I: A variant designed for licensed production in India.
Applications edit
Specifications edit
Data from UEC Saturn.[2]
General characteristics
- Type: Double spool (two shaft) turbofan
- Length: 1,950 mm (76.77 in)
- Diameter: 590 mm (23.23 in)
- Dry weight: 315 kg
Components
- Compressor: two-spool, with 3-stage low-pressure (LP) and 5-stage high-pressure (HP) and one annular compressor
- Turbine: 1 LP stage and 1 HP stage
Performance
- Maximum thrust: 1,760 kgf (17.3 kN; 3,900 lbf) (take-off thrust)
- Overall pressure ratio: 17.5
- Bypass ratio: 0.515
- Air mass flow: 28.5 kg/s
- Turbine inlet temperature: 1445 Tc[3][4][5]
- Specific fuel consumption: 0.69 kg/kgf.h (Specific fuel rate at the limiting point), 0.645 kg/kgf.h (Specific fuel rate in cruising mode)[3][4][5][6]
- Thrust-to-weight ratio: 5.59 (take-off thrust)
See also edit
References edit
- ^ MiG-AT aircraft Archived 2012-05-05 at the Wayback Machine
- ^ "Engines for military aircraft and UAS AL-55".
- ^ a b http://www.russia-algeria.ru/3/Saturn_english_2010.pdf [bare URL PDF]
- ^ a b "United Engine Corporation". Uk-odk.ru. Archived from the original on 2014-02-16. Retrieved 2014-04-06.
- ^ a b Соколов Константин. "NPO "SATURN" > AL-55". Npo-saturn.ru. Retrieved 2014-04-06.
- ^ "AL-55E engine".