Methods and apparatus are provided for making a rotor blade spar from composite material wherein a multi-component mandrel is used to form the composite spar. The mandrel is made using a number of components, which are assembled to provide a structure that is sufficiently strong to maintain the spar shape during pre-cure lay up, compaction and curing of the composite material. The multiple components used to form the mandrel can be separated from each other and easily removed from the spar either before or after curing of the composite material. The mandrel components can then be re-assembled and re-used to form additional composite spars.
申请公布号
WO2008147402(A2)
申请公布日期
2008.12.04
申请号
WO2007US25371
申请日期
2007.12.12
申请人
HEXCEL CORPORATION;WHITE, JANE (THE ADMINSTRATRIX OF THE ESTATE OF JOE WHITE);CALLIS, RICHARD, A.;NEWKIRK, SCOTT