What’s that you’re doing, Mr. Barner?

What’s that you’re doing, Mr. Barner?
© Sonja Brüggemann/LH Technik

Ralf Barner, 53,

Electronics technician

has been working with Lufthansa Technik in Hamburg for 37 years


“I’m hooking up an integrated drive generator (IDG) for testing. The IDG does the same job in a plane as the alternator in a car. Every engine has its own built-in IDG. It generates the electricity for all the on-board electronics – from the in-flight entertainment display to the computer system. I’m attaching a movement sensor here, which we will use later to measure the IDG’s reaction to the test. I’ve already connected up the power and oil lines. When I start the test programs, I let the IDG run in standard and overload mode, and even simulate short circuits, all the while keeping my eye on the readings. Oil normally flows into the device at temperatures of up to 100 degrees Celsius; inside it, pressure levels of up to 20 bar are acceptable. The IDG I’m testing now has just been repaired. If the test goes smoothly, it will be certified and ready for installation in the next airplane.”