IABG supports qualification of NH90 helicopter

On behalf of ESG Elektroniksystem- und Logistik-GmbH , IABG Oberpfaffenhofen has supported the qualification of the NH90 transport helicopter for the  BAAINBW. Three NH90 configurations (Forward Air Medical Evacuation MedEvac, Chase and Training) as well as different typical mission phases relevant for helicopter operation were covered in the course of the test campaign over a period of several weeks. The flights were accomplished by the  army aviators of Heeresflieger Waffenschule in Bueckeburg with test pilots of Wehrtechnische Dienststelle 61 (WTD61).

Objective of the campaign was to create a work place analysis regarding the effects of oscillation and vibrations on the human body at the respective work places, to evaluate results and derive appropriate operational requirements with regard to service hours, protection equipment, etc. Further measurements on noise, dust and flue gases were accomplished by project partners. The WTD 91 in Meppen took over the firing test elements with on-board weapons and provided the measurement results obtained to IABG.

The helicopter was equipped with measuring instruments at the end of 2013, initially in the form of a sample installation, with the goal of obtaining flight permission from the WTD61 ML in Manching. For this purpose, IABG carried out verifications of strength, electromagnetic compatibility and integration of the experimental technology installed in the helicopter.

Up to 117 acceleration channels with sensors particularly designed for human vibration  application were used for the measurement.  Measuring sensors  were, among other places, installed in the cockpit, seats, cabin floor and selected parts of the mission equipment. Data on position and attitude were recorded as well.
The measurements were focused on complete body vibrations and so-called hand-arm vibrations.

IABG specialists subsequently analysed the acceleration data generated by these measurements regarding their risk to health, impact on perception and hand-arm vibration parameters.

The extensive test results serve as a basis for the evaluation of future NH90 missions regarding the effect on crews during in-flight service. The measurement data are assessed and evaluated by the ESG security engineer in charge. IABG hereby provides an important contribution for the safe and sustainable use of the NH90 weapon system.