2 Questions in 1

[loachboy]

Firstly after chatting with a bloke the other night, he seemed to be under the impresion Australia use aircraft to spot prawns. Is there any truth in this statement and if so where and do they use Heli's? PM: If you know anything.

Secondly: Bear with me. Is there such thing as a 2 Bladed - Fully articulated Helicopter. If so, which type and if not why ?

Pardon this second question if is not worthy !

Please only constructive useful replies.

Loachy :uhoh:

[vorticey]

i know they use spotter planes around the gulf, not herd of them using helicopters and see no need, the plane spots for many boats on a single flight.

maybe the fully articulated head was just to allow movement between multiple blades which isnt nesisary on a 2 bladed setup.

[Flingwing207]

...not sure about prawns, but helicopters are used to herd tuna!

As far as the fully articulated 2-bladed rotor system, (as mentioned already) it isn't needed, although you will see coning hinges on Robinson rotorheads - this because the blades are not designed to absorb the bending loads of coning. (There has been and continues to be debate about the possible negative effects of having both a teetering and coning hinge on a rotor system and its contribution to certain unexplained inflight breakups of Robinson helicopters.)

[MightyGem]

Don't prawns live on the seabed? Bit hard to see from the air, methinks.