Helicopter blade mandrel with roller assembly
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United States of America Patent
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Aug 20, 2013
Grant Date -
Feb 9, 2012
app pub date -
Oct 19, 2011
filing date -
Jan 25, 2008
priority date (Note) -
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Abstract
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 that are assembled and held in place using a roller assembly. The roller assembly is removed after pre-cure lay up and compaction of the composite material. Once the roller assembly is removed, the remaining mandrel components can be separated from each other and easily removed from the spar. The mandrel components, including the roller assembly, can then be re-assembled and re-used to form additional composite spars.
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