by National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, For sale by the National Technical Information Service] in [Washington, D.C.], [Springfield, Va .
Written in English
|Statement||James J. Zakrajesek.|
|Series||NASA technical paper -- 2901., AVSCOM technical report -- 88-C-010.|
|Contributions||United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.|
|The Physical Object|
Get this from a library! Comparison study of gear dynamic computer programs at NASA Lewis Research Center. [James J Zakrajsek; United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.]. Current research efforts at NASA Lewis include efforts to validate program D_NST by comparing the results with experimental data from the gear noise test rig. D_NST is also being extended to provide dynamic analysis of high contact ratio spur gears. Gear train dynamics research Vibration in rotorcraft transmissions is a. This report presents a computer-based method of analysis of spur gear system dynamics. The report is based upon research conducted by the authors at the University of Cincinnati with the support of the NASA Lewis Research Center from to under Grant NSG The report represents a portion of the first author's doctoral dissertation. and experimental study of gear thermal conditions, the analytical and experimental study of split torque sys-tems, the evaluation of several new advanced gear steels and transmission lubricants and the evaluation of various aircraft transmissions. The area of research needs for gearing and transmissions is also discussed. NASA Lewis Research CenterFile Size: 1MB.
2 NASA LEWIS GEAR NOISE, VIBRATION, AND DIAGNOSTICS RESEARCH The gear dynamics research activities at NASA Lewis focus on developing advanced technologies and analytical tools to help achieve the goals of reduced weight, vibration, and noise in future rotorcraft transmissions. This paper presents a computer simulation showing how the gear contact ratio affects the dynamic load on a spur gear transmission. The contact ratio can be affected by the tooth addendum, the pressure angle, the tooth size (diametral pitch), and the center by: HELD AT NASA LEWIS RESEARCH CENTER October 21 Introduction On October 21 The Futures Group of Glastonbury, CT, ran a "futuring workshop" on the premises of NASA's Lewis Research Center under sponsorship of the Office of Technology . Lewis Research Center, located in Cleveland, Ohio, is NASA's Center of Excellence in turbomachinery. This center has a primary mission to work in aeropropulsion in support of NASA's Aeronautics and Space Transportation Technology Enterprise. Organized in by the National Advisory Committee for.
Fundamental microgravity science experiments are tasked to the Lewis Microgravity Division. Academic, industry and government researchers have access to the Lewis ground-based research facilities. The program also supports the conduct of microgravity science experiments on the Shuttle and in the future aboard the International Space Station. A companion tool to Glenn Research Center's ACD software (LEW), ACOD is streamline analysis code for predicting the off-design performance of multistage axial-flow compressors. Flow, blading, and loss are modeled similarly to ACD. ½ ¾ NASA Lewis Research Center ¿ ¾ Computer Sciences Corporation, NASA Ames Research Center. Sohoni, V.N., and Chace, M.A., “Pseudo-Prototyping of Aerospace Mechanical Dynamic Systems with a Generalized Computer Program,” Proceedings of the 20 th Aerospace Mechanisms Symposium, NASA Lewis Research Center, Cleveland, Ohio, May 7–9, Google ScholarCited by: