Fuel Cell Ballistic Repair and Fitting Replacement.
Abstract
This document presents all data resulting from a three-phase program conducted to develop and evaluate materials and procedures for the field repair of ballistically damaged crashworthy, self-sealing fuel cells. The initial phase involved establishing both ballistic repair and fitting replacement procedures, and the repair materials to be used. The evaluation was made using both cube cells and panels of cell material containing replaced fittings. The second phase involved three cube cells that were mechanically wounded, repaired, and ballistically tested to establish size, proximity, location, and number of wounds that could feasibly be repaired. All wounds were 3-1/4-inch knife slits; the minimum distance between wounds was 2 inches; and the maximum number of wounds in any 30-inch x 30-inch cube face was 8. The third phase involved the use of full-scale crashworthy, self-sealing fuel cells. All cells were ballistically wounded, subjected to a post-gunfire fuel soak, repaired, and crash impacted. The cells utilized were a UH-1D/H, upper L.H.; a UH-1C, L.H.; a CH-47C, auxiliary; and an OH-58. The UH-1D/H and OH-58 cells passed the crash impact test, while the UH-1C and CH-47C cells did not. It was concluded that the repair procedure and repair cement would restore the crashworthy integrity of the ballistically wounded UH-1D/H and OH-58 fuel cells. It was further concluded that the crashworthy integrity of the larger UH-1C, L.H., and CH-47C fuel cells would not be restored using the repair cement.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA027178
Entities
People
- S. G. Young