A rotor 1, characterised by the fact that each said second, elastomeric coupling includes a knee joint of {HEAD ~ elastomeric material} housed within the associated said hole and coupled to the associated said projection by {TAIL ~ means} of a splined coupling  
coupled by
A rotor 1 , characterised by the fact that each said second , elastomeric coupling includes a knee joint of { HEAD ~ elastomeric material } housed within the associated said hole and coupled to the associated said projection by { TAIL ~ means } of a splined coupling
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH