This is a factory in Toulouse that is the result of a joint venture composed by the companies Turbomeca and ABG SEMCA. This joint venture was dedicated to the construction of auxiliary power groups (APUs).

-It started business in 1977 as GIE Turbodyne, but as there existed another brand in the USA with the same name, it was changed to Astadyne.

-Turbomeca proposed their Astazou turboshafts and ABG SEMCA its 440 kW generators.

-The first product was the AST-600.

-The Most significant product would be the AST-600, used in the Dassault-Breguet patrol aircraft Atlantique 2.

"Astadyne AST-600"

-The power is 300 Kw and its maximum rotation speed could reach 44,886 rpm.

-Although its normal rated rotation speed was 40,806 rpm.

-You can see a unit at the CAEA in Aquitaine. France.

From appendix 6: The collection of the Aeronautique Conservatoire d'Aquitaine has recently increased with a new Astadyne APU, the AST 950-1A.

-It is a turbo-generator based on the Astazou 16 turbine, developed by ABG SEMCA (Liebherr-Aerospace after 1995).

"Astadyne 950"

-It provides pneumatic power of 3.5 bar and 0.65 kg/sec. bleed air. It uses a ABG-SEMCA compressor.

-The accessories and training box, gears, etc., came from ABG-SEMCA as well. Both alternators are 210 kW Auxilecs.

-It has a hydraulic 12 kW Messier-Hispano pump. This is used by a hydraulic motor to extend and retract the antenna to a length of 8 km. This 8 km antenna line forms part of a dipole antenna that is used by special submarine radio communication transceivers.

-The four antisubmarine fighters C.160H Transall Astarte have two units of this model.

"Astadyne 950"