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Helicopter in balance

Center of gravitiy measurement for helicopters

Helicopters have two main center of gravity points. In flight operation the center of gravity affects the flight characteristics and the fuel consumption of the helicopter. When servicing or removing aggregates, the center of gravity must be monitored so the helicopter won’t tilt. For this purpose Althen developed a mobile measuring system for the determination of the center of gravity of helicopters.

A solution in two suitcases

Our measurement solution consists of two suitcases:

  • The first suitcase includes data acquisition with a 10-channel Data Logger GL220, the terminals for the strain gauge load cells as well as a voltage supply with normal voltage.
  • In the second case, there are three load cells with a nominal force of 20 kN and a linearity of 0.1%, the connection cables and the type-specific receptacle adapters.

For the measurement, you connect the helicopter through the adapters and the force sensors to a lifting device. The type-specific adapters ensure that the flight pattern is not damaged. The measuring system displays the results of the individual sensors as decimal numbers.

The mass center of the helicopter can then be calculated using the geometry of the measuring points and the three measured values. The measured values can either be stored in the data logger or stored on a USB stick and archived.

Vorteile:

  • Mobile Lösung
  • Der Datenlogger kann auch aus dem Koffer entnommen und für weitere externe Messungen genutzt werden. Mit ihm können Spannungen, Temperaturen und Luftfeuchte erfasst werden.
  • Das gesamte Messsystem kann durch den Austausch der Kraftnehmer und Adapter an verschiedene Flugmuster angepasst werden. Somit bietet die Lösung über die spezifische Anwendung bei der Hubschrauberwartung hinaus vielfältige Einsatzmöglichkeiten.
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