Lightweight Integrally Stiffened Composite Structure

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-08-C-0165
Agency Tracking Number: N081-016-0686
Amount: $141,499.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: N08-016
Solicitation Number: 2008.1
Small Business Information
9950 Wakeman Drive, Manassas, VA, 20110
DUNS: 604717165
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Wonsub Kim
 Principle Structures Engineer
 (703) 530-1904
Business Contact
 Diana Eichfeld
Title: Contracts Manager
Phone: (703) 396-6329
Research Institution
Aurora’s Integrally Stiffened SBCF Panel (ISSP) design and manufacturing approach is a replacement for honeycomb panels. It relies upon the unique forming capability provided by Stretch Broken Carbon Fiber (SBCF), which is unidirectional, collimated short carbon fiber filaments in a prepreg tape format. Uncured SBCF is formed through “stretching” similar to plastic forming of metal, allowing complex shapes to be easily produced at significant layup savings. However, after forming and cure, the discontinuous SBCF filaments provide almost the same strength and stiffness as conventional continuous fiber composites. SBCF forming to date is for single surface skins such as shear webs with formed stiffening beads. While significant labor savings result, these configurations are not suitable for external panels, where many honeycomb parts are used. ISSP features a double skin panel –a smooth outer, air passage skin and a beaded inner skin – to provide structural efficiency and light weight of a sandwich panel, but without a core. The ISSP manufacturing process, successfully demonstrated, produces panels in a single cure cycle. A detailed Trade Study to validate weight and cost vs. a honeycomb baseline design will be conducted in collaboration with Sikorsky and Bell to establish weight, quality and manufacturing costs trade.

* Information listed above is at the time of submission. *

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