Patent Number

EP2727832 A1 2014-05-07

Rotor head of a rotary wing flying machine and method of manufacturing and assembling such a rotor head
The invention relates to a rotor head (20) of a rotary wing flying machine with a fuselage, a rotor mast (21) or a rotor shaft (22) extending above said fuselage.A plurality of rotor blades (23 - 26) extend radial from said rotor mast (21) or rotor shaft (22) and means (2) for attaching said blades (23 - 26) to said rotor mast (21) or rotor shaft (22) permit flapping, pitch and lead-lag blade movements of said blades (23 - 26).A fairing/ aerodynamically shaped hub-cap (3) encloses said rotor mast (21) or rotor shaft (22) and said blade attaching means (2).Said fairing/hub-cap (3) forms a chamber for said rotor mast (21) or rotor shaft (22) and has a peripheral cut-out for each blade (23 - 26) through which said blade (23 - 26) extends radial from said rotor mast (21) or rotor shaft (22).Said cut-outs are sized to accommodate all of the movements of said blades (23 - 26) with said blade attaching means (2) encountered in operation.The invention relates as well to a method of manufacturing and assembling the components of the inventive rotor head (20).		©Questel

FamPat family

Publication Number		Type	Publi.Date	Links
	EP2727832	A1	2014-05-07
	STG:	(A1) Application published with search report
	AP:	2012EP-0400045
	EP2727832	B1	2016-06-22
	STG:	(B1) Patent specification
	AP:	2012EP-0400045
	RU2531858	C1	2014-10-27
	STG:	(C1) Patent for invention
	AP:	2013RU-0148523
	KR10-2014-0056114	A	2014-05-09
	STG:	(A) Published application
	AP:	2013KR-0131741
	KR10-1557891	B1	2015-10-06
	STG:	(B1) Patent specification
	AP:	2013KR-0131741
	CN103786882	A	2014-05-14
	STG:	(A) Published application
	AP:	2013CN-0475958
	CN103786882	B	2016-08-17
	STG:	(B) Granted patent for invention
	AP:	2013CN-0475958