Accession Number:

ADA024523

Title:

Full Temperature Range Protective System for Fastener Areas of Carrier-Based Naval Aircraft.

Descriptive Note:

Summary rept. 1 Jan 74-31 Dec 75,

Corporate Author:

LOCKHEED-GEORGIA CO MARIETTA

Report Date:

1976-02-01

Pagination or Media Count:

104.0

Abstract:

Results are presented for a program to develop a full temperature range -65 to 325 F protective systems for carrier-based aircraft. Selected primers, intermediate coatings, and topcoats were subjected to screening tests. The best coating systems were applied to aluminum and titanium specimens representative of aircraft joints. After five cycles of a simulated flight spectrum, the specimens were checked for coating defects, corrosion, and coating adhesion. The most effective coating combinations were three-layer systems composed of a MIL-P-23377 epoxy-polyamide primer, an aliphatic linear polyurethane topcoat, and intermediate costs of elastomeric polyurethane or inhibited polysulfide. These, plus an additional system with an inhibited polysulfide primer and polyurethane topcoat, were applied to A-7 carrier-based Navy aircraft during 1975. Plans were made for the periodic inspection of the test aircraft over a span of 3 years. Navy C-130 Aircraft BUNO 149787 with experimental coating systems on the upper center wing was given a two-year inspection in August 1975. Except for minor scratches, all systems were in excellent condition. Author

Subject Categories:

  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE