空客A380及340仿真试验系统的电液伺服作动器是什么公司

最佳答案 - 由提问者2008-08-30 12:46:43选出

是德国撼神公司提供的。

Before an aircraft can take off for realit has to prove its prowess on thehydraulic test bed. It must withstand atough set of tests representing at least2 - 3 aircraft lives with all conceivable"real situations". For this purpose noless than 90 hydraulic cylinders haveto be coordinated with a high degreeof control effort. A dry run which paysoff for all aircraft in the air. The testingmachine cylinders from Hänchen notonly ensure a "real" feeling of flight butalso permit the sustained and highlyprecise reproducibility of allmovements.The Airbus 340 already has more than 20,000 flights behindit: taxiing on the runway, operation of the landing gear onuneven ground, take-off, flight and landing in good weatheras well as in vertical turbulence with 7.6 m/s gust speed. Thisscenario takes place on a hydraulic test bed at IABG inOttobrunn near Munich. "Since 1970, since the first fatiguestrength tests on the Airbus A 300, we have been usingHänchen hydraulic cylinders. Together we defined,developed and tested the necessary units. And even onextreme special constructions such as synchronous cylinderswith a five metre stroke and six metre length the Swabiancylinder manufacturer, unlike other companies, never failed,"reports Dipl.-Ing. Siegfried Schmid, head of the hydraulicloading unit group at IABG. The hydraulic unit for the Airbustests is a fluid system in the superlative: 90 hydrauliccylinders and two hydraulic motors are supplied by six fluidpumps with up to 2,000 litres of oil per minute at a powerconsumption of 1.2 MW.The mega-characteristics of the test stand are reflected in thedetails.At a working pressure of 210 bar the cylinder transfers up to1600 kN of load - depending on the cylinder size - to thestructure. This enables conditions to be simulated in whichthe wings are subjected to a loading of up to 250 tonnes,because the A 340 is a wide-bodied long-haul aeroplane witha wingspan of 60 metres. The entire double wing with thecentral fuselage element