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 means of {TAIL ~ a splined coupling}  
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 means of { TAIL ~ 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH