The UK has upgraded ... these helicopters were upgraded to the interim iHC3/3a standard. The iHC3 configuration included equipping the helicopters with a folding main rotor head (no tail fold ...

Following is a transcript of the video. This helicopter has dual-crossing rotors for increased precision The K-MAX uses a unique double rotor system where the two rotors cross each other.

Tandem rotor systems, commonly used in axial compressors, consist of two sets of blades arranged in a way that enhances aerodynamic performance. Recent research has focused on optimizing these ...

A total of 19 Mk3 and six Mk3a Commando Merlin helicopters have now been upgraded to the Mk4/4a standard, with the work overseen by the procurement arm of the Ministry of Defence (MoD), Defence ...

This equates to an annual average of 139 flight hours per helicopter during ... The twin-rotor aircraft can reach speeds of up to 300km/h. "UK Chinook flight hours down by nearly 20% in four ...