Abstract: Compared with internal-rotor switched reluctance motors (SRMs), external-rotor (ER) SRMs can show different vibration and acoustic noise behavior due to the differences in the designs, e.g.

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Received signals of this type typically consist of returns from the rotating main and tail rotor blades, the helicopter body, and other residual components which may overlap in time and frequency, ...

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Avionics manufacturer Thales is using a modified Airbus Helicopters H125 to test and develop new mission systems. Leased from MRO provider StandardAero, the light-single allows Thales to trial new ...

It is learnt that the tail rotor may have failed mid-ight, leading to the fatal accident that has prompted a high-level investigation by the Air Force. The Sri Lanka Air Force (SLAF) said that the ...

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fuselage (including the engine), main rotor system (including both main rotor blades, transmission and roof-beam structure), and the tail boom (including the tail rotor). As previously reported the ...

the main rotor system with both rotor blades, transmission, and roof-beam structure; and the tail boom with the tail rotor. "Several witnesses described hearing several loud 'bangs' emanating from ...