Commander, Naval Air Systems Command (Code 2.3), Patuxent Naval Air Station, Bldg 2272, Lexington Park, MD 20670

15 -- P-3C FULL SCALE FATIGUE TEST AND POST TEST ANALYSIS FOR P-3C SLAP/SLEP SOL N00019-98-R-0012 POC Sherita Crosby, Air-2.3.2.2.1, (301) 757-5216 E-MAIL: Crosby_Sherita%PAX9CMr.NAWCAD. NAVY.MIL, Crosby_Sherita%PAX9CMr.NAWCAD. NAVY.MIL. Rev. B 1/27/98 P-3C SERVICE LIFE ASSESSMENT PROGRAM PHASES II AND III SYNOPSIS The U.S. Navy (USN) and its Foreign Military Sales (FMS) partners are conducting a series of programs to assess and extend the P-3C operational service life. These programs will determine structural modifications and replacements required to extend the P-3 operational service life to meet inventory requirements through at least the year 2015. Both material condition and fatigue life are primary considerations related to achieving this goal. While the P-3 Sustained Readiness Program (SRP) corrects the material condition deficiencies, the Service Life Assessment/Extension Program (SLAP/SLEP) is required to assess (SLAP) and then extend (SLEP) the fatigue life. The primary objectives of SLAP are to assess the fatigue life and damage tolerance characteristics of the P-3C airframe, and to identify structural modifications required to attain the 2015 service life goal. SLAP will be accomplished in three phases: I) Pre-Testing Analysis; II) Full-Scale Fatigue Test; and III) Post-Test Analysis. The contract for Phase I has already been awarded. A new contract will address Phases II and III of this program. The following is a summary of major tasks to be performed under this new contract: a) Update the fleet usage, operation loads system, and P-3C finite element model b) Develop fatigue design and test spectra c) Perform static, fatigue, and damage tolerance analyses d) Design, fabricate, prototype, and install SLEP kits e) Receive and prepare test aircraft f) Design, fabricate, and assemble test fixtures including loading jigs g) Design and either manufacture or obtain a test and data acquisition system h) Design and install instrumentation i) Perform baseline nondestructive inspections j) Perform full-scale fatigue and damage tolerance testing k) Perform visual, and instrumental in-situ nondestructive inspections of fatigue critical locations at periodic intervals during testing using state-of-the-art monitoring and detecting technology l) Design and install repairs and modifications as required m) Perform complete post-test destructive teardown inspections, and conduct metallurgical and fractographic failure analyses n) Correlate test data and verify analysis methodology o) Validate and verify SRP/SLEP kits for production; generate drawing and tooling data packages p) Develop a new fatigue life tracking algorithm. Rebaseline Fatigue Life Expended (FLE) for the entire P-3C fleet aircraft using the test results The offeror should possess full in-house engineering and testing capability, extensive expertise and experience in the areas of full-scale fatigue and damage tolerance analysis and testing, NDI/T, metallurgical failure analysis, manufacturing, production, modification, rework and overhaul of new and old airframes. Copies of the draft Statement of Work (SOW) will be made available upon request, and the draft SOW will be posted on the NAVAIR web site (http://www.navair.navy.mil/air20/air214/solicndx.htm) after February 9, 1998. Comments, feedback, and questions on the draft SOW are solicited and will be welcome. In addition, the draft solicitation is intended for release on the NAVAIR web site at a later date yet to be determined. Requests to be included on the bidders list will be accepted in writing only to: Department of the Navy Naval Air Systems Command Naval Air Systems Command Headquarters 47123 Buse Road, Unit # IPT, Code 2.3.2.2.1 Patuxent River, MD 20670-1547 (0033)

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