Turbomeca Arrius
The Turbomeca Arrius is a shaft turbine developed by the French manufacturer Turbomeca to drive helicopters . According to a tradition at Turbomeca, the engine was named after a mountain in the Pyrenees ( pic d'Arrius in the Ossau valley near Pau ).
It was developed from 1981 and was used from 1983; so far more than 3000 pieces (as of 2015) have been sold. The output of the different versions is between 357 kW and 530 kW.
variants
- 1A: two pieces in the Eurocopter AS 355 N Ecureuil
- 1M: two pieces in the Eurocopter AS 555 N Fennec
- 2B, 2B1, 2B1A, 2B1A_1,2B2: 2 pieces in the Eurocopter EC 135 (2B2 has been in use since 2002)
- 2F: a piece of Eurocopter EC 120
- 2K1: two pieces in the Agusta A109 Power (certified by FAA in 2001)
- 2K2: two pieces in the Agusta A109 LUH
- 1D, 2D: a piece in the Socata Omega (Socata Epsilon remotorisé)
- 2G1: two pieces in the Kamow Ka-226 T
- 2R: a piece in the Bell SLS
Technical specifications
The engines each consist of the actual twin-shaft turbine and a reduction gear adapted to the specific installation purpose. The reversing annular combustion chamber is arranged at the rear in order to keep the installation dimensions of the engine small. The single-stage centrifugal compressor is driven by a single-stage high pressure turbine. The second turbine stage behind it serves as a working or power turbine, which transfers its mechanical drive power to the built-in reduction gear. Their direction of rotation is opposite to that of the “gas generator” (compressor stage and first turbine stage). The output speed at the gearbox output is 6000 min −1 . The twin-shaft engine is designed as a free-wheeling turbine . The shafts of the “gas generator” and the power turbine with the drive train are not mechanically connected to each other, although they work one behind the other (but with different directions of rotation) in the same gas flow. This arrangement enables the engine to be started and run up (by accelerating the "free-running" gas generator shaft using an electric starter to the starting speed) when the drive train is not yet rotating (power turbine with reduction gear ), without it being separated from the load (helicopter rotor) by a switchable clutch or centrifugal clutch must become.
| variant | Max. Power (OEI 30 sec) |
Max. Performance (OEI 2.5 min) |
Starting power | Continuous output | Dimensions L × W × H |
Weight MTOW |
regulation |
|---|---|---|---|---|---|---|---|
| 1A / M | 357 kW | 790 ×? ×? mm | 101 kg | FADEC | |||
| 2B2 | 610 kW | 590 kW | 472 kW | 1160 × 518 × 690 mm | 114 kg | FADEC | |
| 2F | 376 kW | 1360 × 448 × 674 mm | 103 kg | hydraulic-mechanical | |||
| 2K1 | 560 kW | 500 kW | 426 kW | 973 × 538 × 638 mm | 115 kg | FADEC | |
| 2G1 | 591 kW | 537 kW | 457 kW | ? mm | ? kg | FADEC |
OEI (One-Engine-Inoperative) Performance up to which the engine may be loaded up to three times if the other fails. This entails a complete inspection of the engine, i.e. no continuous power.
Web links
- "Homepage" of the engine on the Turbomeca website (English) last updated: January 9, 2016
- Type certificate of the Turbomeca Arrius 1A series - EASA-TCDS-E.080 (PDF; 438 kB)
- Type certificate of the Turbomeca Arrius 2 series - EASA-TCDS-E.029 (PDF; 235 kB)
- FAA-TCDS-E34NE (PDF; 99 kB) - FAA type certification of the Arrius A1 series
Individual evidence
- ↑ Patrick Hoeveler: competition . New engines for civil helicopters. In: Flight Revue . Motor Presse Stuttgart , March 2015, ISSN 0015-4547 , p. 64 .
- ↑ Arrius 2G1. Turbomeca about the 2G1 version for the Kamow-226T. (No longer available online.) Turbomeca, archived from the original on May 7, 2016 ; accessed on October 9, 2016 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
