HVOF as a Hard Chrome Replacement Jon L. Devereaux AIR - 4.9.7.4 NADEP Jacksonville Materials Engineer Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 3. DATES COVERED JAN 2006 2. REPORT TYPE 00-00-2006 to 00-00-2006 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER HVOF as a Hard Chrome Replacement 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION Naval Air Depot Jacksonville,AIR 4.9.7.4,Jacksonville,FL,32212 REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S) 11. SPONSOR/MONITOR’S REPORT NUMBER(S) 12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release; distribution unlimited 13. SUPPLEMENTARY NOTES 26th Replacement of Hard Chrome and Cadmium Plating Program Review Meeting, January 24-26, 2006, San Diego, CA. Sponsored by SERDP/ESTCP. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF 18. NUMBER 19a. NAME OF ABSTRACT OF PAGES RESPONSIBLE PERSON a. REPORT b. ABSTRACT c. THIS PAGE Same as 40 unclassified unclassified unclassified Report (SAR) Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18 HVOF as a Hard Chrome Replacement Current Status of P-3 Main Landing Gear HVOF MLG Piston installed 26 April 99 on VP-30 Aircraft BuNo 156522 850 Landings on HVOF coated MLG Piston (Aug 00) HVOF Coated Piston removed from service Aug 2000 due to internal oil leak on ID-2 (NOT HVOF COATED) HVOF Coated Strut repaired, sent back to VP-30 Installed on Aircraft 160284 STBD April 25, 2001 1,078 Total Landings on HVOF coated strut (8/23/01) HVOF as a Hard Chrome Replacement Current Status of P-3 Main Landing Gear 2,858 Total Landings on HVOF coated strut as of 30 Sept 03 Aircraft sent to Depot JAX for PDM on 13 August 2003 Aircraft returned to VP-30 on Feb. 6, 2004 3,329 Total Landings on HVOF coated strut as of 7 May 04 4,410 Total Landings on HVOF coated strut as of 1 March 05 6,378 Total Landings on HVOF coated strut as of 15 January 2006 when strut was removed & turned in to Supply IAW AFB 383 (Strut Assy S/N C30-1252 P/N 937958-103 R/H MLG) HVOF as a Hard Chrome Replacement Buno-156522 VP-30 Aircraft Installed 4/26/99 4/26/99 HVOF as a Hard Chrome Replacement 4/26/99 Buno-156522 VP-30 Aircraft- Installed – 4/26/99 4/26/99 HVOF as a Hard Chrome Replacement AA//CC 116600228844 NNoovv 1144,, 22000033 22,,885588 LLaannddiinnggss 4/26/99 156522 VP30 Aircraft- Installed – 4/26/99 4/26/99 HVOF as a Hard Chrome Replacement Second P-3 MLG Piston coated with HVOF WC/Co 83/17 • Tested in $70M P-3 aircraft SLAP/SLEP - Full Scale Fatigue Test • R/H MLG chrome plated • L/H MLG HVOF coated • HVOF coating, grinding & processing of gear funded by Naval Research Lab (NRL) • Testing started 30 August 2001 (24 month test) • 26,000 CTH planned; ECD December 02 if all goes well • Landing gear shows no sign of coating problems HVOF as a Hard Chrome Replacement Second P-3 MLG Piston coated with HVOF WC/Co 83/17 • 26,000 CTH initially planned • Test extended to 38,000 CTH - some of airframe not tested sufficiently • 200-250K cycles on LG representing 47,000 Landings • Test represents two fatigue lifetimes • If this testing doesn’t break the landing gear or HVOF coating, then nothing will! - NAVAIR Structures • Landing gear shows no sign of failure or coating problems • Test Completed with a “BANG!” on 4 March 2003 • Landing Gear removed April 2003 for inspection HVOF as a Hard Chrome Replacement