Accession Number : ADA073381


Title :   Development of Mainshaft High-Speed Cylindrical Roller Bearings for Gas Turbine Engines.


Descriptive Note : Interim rept. 1 Apr 1977-1 Oct 1978


Corporate Author : PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV


Personal Author(s) : Brown, P F ; Dobek, L J ; Robinson, J D ; Miner, J R


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a073381.pdf


Report Date : Oct 1978


Pagination or Media Count : 106


Abstract : This combined analytical and experimental program is aimed at generating a manual that will permit the design of 3.0 MDN cylindrical roller bearings. The roller bearing analysis will be correlated with the results from a series of bearing tests designed to determine, by statistical methods, the effect of geometrical variables on bearing performance. An existing quasi-static design optimization system was previously upgraded and the basic analyses for use in developing a program to predict the dynamic behavior of roller bearing components was completed. A study identified a total of thirty separate bearing parameters that can influence roller skewing and skidding. Two groups of 124 mm roller bearing designs were then prepared using statistical design techniques and incorporating parameters from the list of thirty. Fabrication of full-scale bearing hardware was completed and testing was completed. Results indicate that roller end wear is significantly affected by roller corner radius runout.


Descriptors :   *HIGH VELOCITY , *GAS TURBINES , *CYLINDRICAL BODIES , *ROLLER BEARINGS , *DRIVE SHAFTS , SIMULATION , DYNAMICS , STATICS , MANUALS , GEOMETRY , WEAR , FABRICATION , PARAMETERS , EXPERIMENTAL DESIGN


Subject Categories : Machinery and Tools
      Mechanics
      Jet and Gas Turbine Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE