Accession Number : ADA590986


Title :   Deconstructing Hub Drag. Part 2. Computational Development and Anaysis


Descriptive Note : Final technical rept. 1 Jul 2009-30 Jun 2013


Corporate Author : GEORGIA INST OF TECH ATLANTA SCHOOL OF AEROSPACE ENGINEERING


Personal Author(s) : Shenoy, Rajiv ; Smith, Marilyn J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a590986.pdf


Report Date : 30 Sep 2013


Pagination or Media Count : 129


Abstract : Development, validation and demonstration of a computational approach to model complex rotorcraft hubs, their components and their wakes for both static and rotating operation has been developed. A priori computations were compared with experimental results to yield high confidence in the computational analysis. The hub was analyzed for its total and component drag, including interference drag. Components include hub plates, shanks, pitch links, scissors, and hardware. Wake turbulent spectra were obtained for the near and far field wakes, and wake velocities in the near wake. Scaling, influence of the fuselage, and physics of the wake were all explored. With the highly accurate computational approach developed, design and analysis of hubs can be conducted using computations directly on full-scale configurations.


Descriptors :   *COMPUTATIONAL FLUID DYNAMICS , *DRAG , COMPUTATIONS , FAR FIELD , FUSELAGES , HUBS , ROTATION , SCALING FACTOR , STATICS , VALIDATION


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE