Method of Fabricating a Ducted Blanket for a Rotor Spar.

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Abstract:

A method for fabricating an impervious fiberglass blanket having a plurality of spaced-apart slots on its inner side, such as for overlaying and venting a pressurized helicopter rotor spar, includes the steps of positioning a thin metal forming grid of spaced-apart strips, corresponding to the desired slots, on a forming table over a sacrificial layer of peelable material. Sheets of resin-impregnated fiberglass material are positioned over the grid, another sacrificial layer is applied, and a flat caul plate is placed over the lay-up. The laid-up assembly is placed in a vacuum bag, the bag is evacuated, and the assembly is cured in an autoclave. Author

Author(s):
Anton, John ; Bush, Edward
Author Organization(s):
DEPARTMENT OF THE ARMY WASHINGTON DC
Descriptive Note:
Patent Application,
Pagination:
0009

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And, Possibly, For Foreign Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-169 590
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Patent applications, *Helicopter rotors, *Spars, Fiberglass, *Blankets, Fabrication, Composite structures, Vents, Venting, Ducts, Inventions
Field(s)/Group(s):
Helicopters, Ceramics, Refractories and Glass, Laminates and Composite Materials
Report Date:
1980 Jul 17