Patent ID: 11932381
Assignee: LOCKHEED MARTIN CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A mandrel assembly to define a spar surface, comprising:
a first member having a first surface contour that conforms to a first portion of the spar surface, the first member including respective interlocking features at opposing edges;
a second member having a first surface contour that conforms to a second portion of the spar surface, the second member including respective interlocking features at opposing edges;
a third member having a first surface contour that conforms to a third portion of the spar surface, the third member including respective interlocking features at opposing edges to interlock with the respective interlocking features of the first and second members;
a fourth member having a first surface contour that conforms to a balance of the spar surface, the fourth member including respective interlocking features at opposing edges to interlock with the respective interlocking features of the first and second members; and
a support member having a plurality of vanes that extend outwardly, each vane having an end insertable into a respective groove of each of the first member, second member, third member, and fourth member,
whereby the interlocking features are configured to interconnect the first through fourth members to permit the mandrel to remain assembled without the support member.