Senior Bearing Engineer, publications & seminars.
RESUME’
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.gear-doc.com; E-Mail: DrBearing@comcast.net
Joseph W. Lenski, Jr. was a 40-year employee of the Boeing Company and held the position of Technical Fellow, Bearing Technology with the Dynamic Systems Technology group at Philadelphia Rotorcraft division when he retired in 2003. His field of expertise is in the area of rolling element-bearing technology with extensive work in drive system design and lubricant development. He graduated from Drexel University with a Bachelor of Science Degree in Mechanical Engineering in 1963 and a Master’s Degree in Mechanical Engineering in 1966. He joined Boeing Vertol Division in 1963 as an associate engineer in the transmission design group and became involved in the design and testing of helicopter transmission components. He later directed his efforts towards the development of computer programming techniques and analysis for all types of rolling element bearings. During these years he worked very closely with well- known bearing consultant, A. B. Jones, in the development of an extensive library of computer programs that have been used in the design of all rotorcraft drive systems in Philadelphia since 1968. He has been associated with all phases of bearing design including preliminary bearing sizing, vendor negotiation, testing, with considerable emphasis on research and development, and failure investigations. He still continues to provide bearing technical support to the Boeing Company since he retired.
In addition to his responsibilities at Boeing, Mr. Lenski has provided bearing consultant work for Drive Systems Technology, Inc. since 1973. This work has included bearing analysis, selection and life predictions, bearing failure investigations and discussion of various high technology bearing designs and concepts. This work has been done for various steel mill companies, gearbox manufacturers, oil producing facilities, wind turbines and mining companies. Mr. Lenski has provided detailed reports documenting his work in these various areas.
In addition to his work in bearings, he has been assigned as program manager and project engineer for many government funded research and development programs, as well as the Philadelphia Rotorcraft focal for drive system IR&D and IAD projects. These programs have included work on new material development (M-50 NiL, VASCO-X2, CBS 600, ceramic rolling elements and PEEK cages), new bearing design concepts (out-of-round bearings, hollow and hollow ended rollers), high speed (>20,000 Ft/Min) and bi-directional tapered roller bearings, high speed grease lubricated ball bearings, preliminary evaluation of many advanced transmission components such as composite (graphite and metal matrix) housings, bearings, lubricants, clutches and seals and the Advanced Rotorcraft Transmission I (ART I) and Rotorcraft Drive System 2001 programs. Many of these developments have been successfully used in today’s rotorcraft drive systems.
Mr. Lenski has authored more than 50 technical reports, papers and seminars that have been presented at many national and international conferences of AHS, AIAA, ASME, SAE, AGMA and AGARD. A list of many of these technical reports and papers are attached. He has prepared extensive notes and a class manual on basic bearing design and analysis and bearing failure analysis, presenting this information at many seminars. These highly technical seminars were taught to more than 550 engineers at Boeing Philadelphia and Seattle and to members of the U.S. Navy and a few foreign military groups and at various AGMA seminars. A listing of these seminars will be provided later. Joe was also the technical custodian of the Boeing Design Standard BDM 1512 titled “Bearings- Power Transmissions”.
In addition to his work at Philadelphia Rotorcraft, Joe supported various other Boeing programs such as F-22, AH-64, wind turbine, rail cars, AWACS, jetfoil, space station and many commercial aircraft (767, 777, 747…) programs. He has provided consultation on bearing technology transfer to other Boeing groups, to major aerospace bearing manufacturers (MRC, FAG, Timken, SKF, Kaydon, McGill, SBB and ITB/RBC) and to Boeing team members (Bell Helicopters – V-22 and Sikorsky – RAH-66).
In addition to being a life member of ASME for 50 years, Joe was active in, AHS, SAE-E-34 and the ABMA Standards Committee B-3. He was chairman of the SAE Lubricating Characteristics Subcommittee E-34C that is presently developing standards for aircraft propulsion lubricants. Joe was requested by Professor Tedric Harris to be a guest lecturer at Penn State University in the Department of Mechanical Engineering. Joe has also achieved membership in Pi Tau Sigma and Tau Beta Pi, National Honorary Engineering Societies.
