Joseph Lenski Jr., Publications & Seminars

Joseph W. Lenski, Jr, Senior Bearing Engineer
Drive Systems Technology, Inc.
Mechanical Power Transmission Consultants
24 Marlborough Lane
Glen Mills, PA 19342-1519
Phone: 610-358-0785 Fax: 610-358-2776
Web: www.geardoc.com; E-Mail: DrBearing@comcast.net

PUBLICATION LIST

  1. TEST RESULTS REPORT AND TECHNOLOGY DEVELOPMENT REPORT FOR HLH/ATC COMPLIANT ROLLER BEARING DEVELOPMENT PROGRAM, November 1972 – J. W. Lenski, Jr., USAAMRDL Technical Report 72-62
  2. DESIGN, FABRICATE, TEST, AND EVALUATE SPIRAL BEVEL SUPPORT BEARINGS (TAPERED ROLLER), June 1973 – A. J. Lemanski, J. W. Lenski, Jr., and R. J. Drago, Contract DAAJ02-71-0025, Eustis Directorate, U. S. Army Mobility and Research Development Laboratory, Fort Eustis, VA – USAAMRDL Technical report 73-16
  3. AN ANALYTICAL AND EXPERIMENTAL INVESTIGATION OF THE CONTACT CONDITIONS AT THE ROLLER END/CONE RIB OF A TAPERED ROLLER BEARING, November 1973 – R. J. Drago and J. W. Lenski, Jr., AGMA Paper No. 109.32, American Gear Manufacturers Association, 1973 Semi-Annual Meeting, New Orleans, Louisiana
  4. TEST RESULTS REPORT AND TECHNOLOGY DEVELOPMENT REPORT- HLH/ATC DRIVE SYSTEM AFT ROTOR SHAFT BEARING TEST, January 1974 – J. W. Lenski, Jr., USAAMRDL Technical Report 73-92
  5. HLH/ATC ENGINE SHAFT SUPPORT BEARING DEVELOPMENT, May 1974 – J. W. Lenski, Jr., USAAMRDL Technical Report 74-16
  6. TEST RESULTS REPORT AND DESIGN TECHNOLOGY DEVELOPMENT PROGRAM HLH/ATC HIGH SPEED TAPERED ROLLER BEARING DEVELOPMENT PROGRAM, June 1974 – J. W. Lenski, Jr., USAAMRDL Report 74-33
  7. HELICOPTER TRANSMISSION VIBRATION AND NOISE REDUCTION PROGRAM -VOLUME 1, TECHNICAL REPORT, March 1978 – R. J. Drago, R. W. Howells, J. W. Lenski, Jr., E. G. Schaffer, and J.J. Sciarra, USARTL-TR-78-2A, Applied Technology Laboratory, U. S. Army Research and Technology Laboratories (AVRADCOM), Fort Eustis, VA
  8. HELICOPTER TRANSMISSION VIBRATION AND NOISE REDUCTION PROGRAM -VOLUME 2, USER’S MANUAL, March 1978 – R. J. Drago, R. W. Howells, J. W. Lenski, Jr., E. G. Schaffer, and J. J. Sciarra, USARTL-TR-78-2B, Applied Technology Laboratory, U. S. Army Research and Technology Laboratories (AVRADCOM), Fort Eustis, VA
  9. HELICOPTER TRANSMISSION VIBRATION AND NOISE REDUCTION PROGRAM – VOLUME 3 – EVALUATION OF METAL-MATRIX HOUSING SPECIMENS, October 1978 – Joseph W. Lenski, Jr., USARTL Report -78-2C
  10. STRUCTURAL STIFFENING OF TRANSMISSION HOUSING WITH METAL MATRIX MATERIALS, April 1979 – Joseph W. Lenski, Jr., Paper Number 79-0806, 20th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics and Materials Conference, St. Louis, Missouri
  11. AN ANALYTICAL APPROACH TO THE SOURCE REDUCTION OF NOISE AND VIBRATION IN HIGHLY LOADED MECHANICAL POWER TRANSMISSION SYSTEMS, July 1979 – R. J. Drago, J.W. Lenski, Jr., and A. Royal, Fifth World Congress on the Theory of Machines and Mechanisms, Concordia University, Montreal, Canada
  12. AN ANALYTICAL APPROACH AND SELECTIVE STIFFENING TECHNIQUE FOR THE SOURCE REDUCTION OF NOISE AND VIBRATION IN HIGHLY LOADED MECHANICAL POWER TRANSMISSION SYSTEMS, September 1979 – R. J. Drago, J. W. Lenski, Jr., and A. C. Royal, Fifth European Rotorcraft and Powered Lift Aircraft Forum, Amsterdam, The Netherlands
  13. SELF-CONTAINED GREASE LUBRICATION SYSTEMS FOR AIRCRAFT APPLICATIONS, May 1979 – Arthur Irwin, Clinton Inglee and Joseph W. Lenski, Jr.- AHS paper No. 79-39 -35th Annual National Forum of the American helicopter Society, Washington, D.C.
  14. ADVANCED TRANSMISSION COMPONENTS INVESTIGATION PROGRAM – BEARING AND SEAL DEVELOPMENT, August 1980 – Joseph W. Lenski, Jr., USAAVRADCOM-TR-80-D-19
  15. DEVELOPMENT OF A FILAMENT-WOUND GRAPHITE/POLYIMIDE COMPOSITE TRANSMISSION HOUSING, January 1981 – Joseph W. Lenski, Jr., John Mack and James Gomez, Fifth DoD/NASA Conference on Fibrous Composites in Structural Design, New Orleans, Louisiana
  16. METAL-MATRIX COMPOSITES APPLICABILITY TO HELICOPTER PROPULSION SYSTEMS AND DRIVE SYSTEM, May 1981- Joseph W. Lenski, Jr., Paper No. 19, Fourth Metal Matrix Composites Technology Conference, Arlington, Virginia
  17. METAL-MATRIX COMPOSITES APPLICABILITY TO HELICOPTER PROPULSION DRIVE SYSTEM, July 1981- Joseph W. Lenski, Jr., Fred Brown and Robert Pinckney, USAAVRADCOM-TR-81-D-34
  18. HELICOPTER DRIVE SYSTEMS FOR THE 1980’s – DESIGN AND MATERIAL INFLUENCE ON WEIGHT AND SERVICE LIFE, October 1981 – Joseph W. Lenski, Jr., SAWE Paper number 202
  19. DEVELOPMENT OF METAL-MATRIX HELICOPTER TRANSMISSION CASES, January 1982- Robert L. Pinckney and Joseph W. Lenski, Jr., Sixth Annual Conference on Composites and Advanced Ceramic Materials, Cocoa Beach, Florida
  20. APPLICATION OF METAL-MATRIX COMPOSITES TO HELICOPTER TRANSMISSIONS FOR REDUCTION OF NOISE AND VIBRATION, February 1982- Joseph W. Lenski Jr. and Robert L. Pinckney, USAAVRADCOM-TR-81-D-41
  21. DEVELOPMENTS IN THE DESIGN, ANALYSIS, AND FABRICATION OF ADVANCED TECHNOLOGY TRANSMISSION ELEMENTS, November 1982 – Raymond J. Drago and J. W. Lenski, Jr., AHS Paper No. RWP-12, American Helicopter Society Rotary Wing Propulsion System Specialists Meeting, Williamsburg, VA (17 Pages)
  22. DEVELOPMENT OF A GRAPHITE/POLYIMIDE COMPOSITE TRANSMISSION HOUSING, March 1983- Joseph W. Lenski Jr., National Specialist’s Meeting on Composite Structures, American Helicopter Society, Philadelphia, Pennsylvania
  23. APPLICATIONS OF METAL MATRIX COMPOSITES TO A CH-47D ENGINE TRANSMISSION HOUSING, May 1983- Joseph W. Lenski Jr., Fifth MMC Technology Conference, Naval Surface Weapons Center, Silver Spring, Maryland
  24. ADVANCED TRANSMISSION COMPONENTS INVESTIGATION PROGRAM – COMPOSITE TRANSMISSION HOUSING DEVELOPMENT, August 1983 – Joseph W. Lenski, Jr., USAAVRADCOM-TR-83-D-9
  25. ADVANCED TECHNOLOGY TRANSMISSION ELEMENTS, October 1983 – Raymond J. Drago and Joseph W. Lenski, Jr. Journal of the American Helicopter Society, Washington, DC, Volume 28, Number 4, Pages 44 – 53 (10 Pages)
  26. SPECIAL POWER TRAIN REQUIREMENTS FOR THE NEXT GENERATION OF ROTARY-WING AIRCRAFT, October 1984 – Raymond J. Drago and Joseph W. Lenski, Jr. Advisory Group For Aerospace Research and Development, North Atlantic Treaty Organization (NATO), Neuilly Sur Seine, France: Presented at the 64th Symposium of the Propulsion and Energetics Panel on Gears and Power Systems for Helicopters and Turboprops, Lisbon, Portugal (12 Pages)
  27. BASIC BEARING DESIGN AND ANALYSIS COURSE (V9692.3), Seminar Text Joseph W. Lenski, Jr. (1050 Pages), Editions 1984, 1986, 1989, 1994 Library No. 621.822, L573B
  28. WRITTEN DISCUSSIONS OF TECHNICAL SOCIETY PAPERS ON THE SUBJECT OF HIGH SPEED BALL AND ROLLER BEARING SKIDDING 1965, 1969, 1971, AND 1976, ASME, ASTLE
  29. ADVANCED POWER TRAIN TECHNOLOGY CURRENT ACTIVITIES AND FUTURE NEEDS, June 1985- Joseph W. Lenski, Jr. and Raymond Drago, Presented at the NASA/U.S. Army Rotorcraft Workshop, Lewis Research Center, Cleveland, Ohio
  30. APPLICATION OF METAL-MATRIX COMPOSITES TO HELICOPTER FULL- SCALE TRANSMISSION HOUSINGS, December 1987 – Joseph W. Lenski, Jr., USAAVSCOM -TR-87-D-11
  31. BOEING DESIGN MANUAL – BEARINGS-POWER TRANSMISSION, August 1990 – Joseph W. Lenski, Jr., BDM-1512
  32. BOEING HELICOPTERS ADVANCED ROTORCRAFT TRANSMISSION (ART) PROGRAM STATUS, November 1990- Joseph W. Lenski, Jr., Paper No. 2, Rotary Wing Propulsion Specialists’ Meeting, American Helicopter Society, Williamsburg, Virginia
  33. ADVANCED ROTORCRAFT TRANSMISSION PROGRAM – STATUS REPORT, October 1990 – Raymond Drago and Joseph W. Lenski, Jr., Paper No. 90FTM7, Presented at the 1990 Fall Technical Meeting, American Gear Manufacturers Association, Toronto, Canada
  34. ADVANCED ROTORCRAFT TRANSMISSION (ART) PROGRAM – BOEING HELICOPTER STATUS REPORT, June 1991 – Joseph W. Lenski, Jr. and Mark J. Valco, Presented at the AIAA, SAE, ASME and ASEE 27th Joint Propulsion Conference, Sacrament, California, NASA TM-104474 and AVSCOM TR91-C-032
  35. TRANSMISSIONI AVANZATE PER ELICOTTERI, Part I: January 1992 & Part II: February 1992 – Raymond J. Drago & Joseph W. Lenski, Jr., ORGAMI DI TRANSMISSIONE Pages 28-35 (Journal of the Italian Gear Manufacturers Association, In Italian)
  36. THE RELATIVE NOISE LEVELS OF PARALLEL AXIS GEAR SETS WITH VARIOUS CONTACT RATIOS AND GEAR TOOTH FORMS, October 1993 – Raymond J. Drago, Joseph W. Lenski, Robert H. Spencer. Mark J. Valco, & Fred B. Oswald, AGMA Fall Technical Meeting, Detroit, MI, American Gear Manufacturers Association, Alexandria, VA (17 Pages)
  37. GEAR SOUND LEVELS WITH VARIOUS TOOTH CONTACT RATIONS AND FORMS, October 1993 – Joseph W. Lenski, Raymond J. Drago, Robert H. Spencer, Mark J. Valco, & Fred B. Oswald, AHS Rotary Wing Propulsion Specialists’ Meeting, Williamsburg, VA, American Helicopter Society, Alexandria, VA (15 Pages)
  38. COMPARISON OF TRANSMISSION ERROR PREDICTION WITH NOISE MEASUREMENTS FOR SEVERAL SPUR AND HELICAL GEARS, June 1994 – Donald R. Houser, Fred B. Oswald, Mark J. Valco, Raymond J. Drago and Joseph W. Lenski, Jr. AIAA 94-3366, ARL-TR-493 and NASA Technical Memo 106647, 30th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Indianapolis, Indiana
  39. OVERVIEW OF A FIVE-YEAR RESEARCH, DEVELOPMENT, AND TEST PROGRAM (Conference Keynote Address), September 1994 – Raymond J. Drago & Joseph W. Lenski, Jr., International Gearing Conference, University of Newcastle, Newcastle Upon Tyne, England (18 Pages)
  40. INFLUENCE OF GEAR DESIGN PARAMETERS ON GEARBOX RADIATED NOISE, September 1994 – F. W. Oswald, D. P. Townsend, M. J. Valco, Raymond J. Drago, Joseph W. Lenski, Jr., & R. H. Spencer, International Gearing Conference, University of Newcastle, Newcastle Upon Tyne, England (18 Pages)
  41. ADVANCED ROTORCRAFT TRANSMISSION PROGRAM (ART), April 1995 – Joseph W. Lenski, Jr., NASA Contractor Report 195461 and Army Research Laboratory Contractor Report ARL-CR-224

SEMINARS PRESENTED

  1. DRIVE SYSTEM DESIGN, Presented to the US Navy at the Boeing Training Center, Philadelphia, PA, June 1984
  2. BASIC BEARING DESIGN AND ANALYSIS COURSE
    A. Boeing Rotorcraft, Philadelphia, PA 1997
    B. Boeing Rotorcraft, Philadelphia, PA 1995
    C. Boeing Commercial Division, Settle, WA 1991
    D. Boeing Rotorcraft, Philadelphia, PA 1989
    E. Boeing Commercial Division, Seattle, WA 1988
    F. Boeing Rotorcraft, Philadelphia, PA 1986
    G. Boeing Rotorcraft, Philadelphia, PA 1984
  3. ENGINEERING TRAINING – FUNDAMENTAL OF BEARING DESIGN – DRIVE SYSTEM DESIGN, Presented to the Singapore Army and Air Force (MINOS) personnel at the Boeing Training Center, Philadelphia, PA, June 1999
  4. MATERIALS ENGINEERING: METALS AND METALS PROCESSING, BEARING FAILURES CASE STUDIES, Boeing Rotorcraft, Philadelphia, PA, 2002
  5. FAILURE ANALYSIS BEARINGS COURSE – MODES- CAUSES- CURES, October 2003 – Joseph W. Lenski, Jr., Presented at the Boeing Company, Philadelphia Rotorcraft, Philadelphia, PA
  6. BASIC BEARING DESIGN AND ANALYSIS COURSE –Triumph Gears Systems, Park City, UT, MARCH 2005
  7. BASIC BEARING FOR THE INSPECTOR – COURSE NUMBER 9PBF060437, Boeing Rotorcraft, Philadelphia, PA, 2007
  8. GEARBOX CSI: FORENSIC ANALYSIS OF GEAR AND BEARING FAILURES – USEFUL TOOLS OF OPTIMIZING GEARBOX DESIGN, Presented by AGMA and AGMA Foundation,
    A. American Gear Manufacturers Association, Orlando, FL, February, 2007
    B. American Gear Manufacturers Association, Clearwater, FL, November, 2007
    C. American Gear Manufacturers Association, Clearwater, FL, November, 2008
    D. American Gear Manufacturers Association, Concordville, PA, October, 2009
    E. American Gear Manufacturers Association, Clearwater, FL, December, 2010
    F. American Gear Manufacturers Association, Concordville, PA, January, 2012
    G. American Axle and Machine Company, Detroit, MI, July 2012
    H. American Gear Manufacturers Association, Philadelphia, PA March 2014
    I. American Gear Manufacturers Association, Concordville, PA, March 2015
    J. Redstone Arsenal Army Base, Redstone, AL April 2015
    K. American Gear Manufacturers Association, Concordville, PA March 2016
    L. U. S. Navy NAVAIR Base, Cherry Point, NC April 2016
    M. U.S Navy Test & Evaluation College Pax River NAS, Patuxent River, MD June 2016
    N. American Gear Manufacturers Association, Concordville, PA March 2017
    O. Sikorsky Aircraft, Stratford, CT, December 2017
    P. Ontario Drive and Gear Co., New Hamburg, Ontario, Canada April 2018
    Q. United States Naval College, PAX River Navy Base, Patuxent River, MD May 2018
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