A theory has been developed, based on lifting surface theory, for evaluation of the pressure field generated by an operating propeller in a nonuniform inflow field. In addition, an experimental procedure and a signal processing technique for measuring small pressure levels accurately have been established and utilized in an extensive experimental program. Theoretical results obtained by means of a computer program developed for the CDC 6600 high-speed digital computer agree well with those of experiments conducted at Davidson Laboratory and at the Naval Ship Research and Development Center. The difficulty of accurately establishing by measurements the decay of small pressures at point farther than one radius from the propeller precludes the possibility of determining the blade-frequency force exerted on a flat boundary by integrating the measured signatures. In contrast, integration of double the theoretical free-space pressure over the flat boundary appears to be a feasible and meaningful approach. (Author)

  • Corporate Authors:

    Stevens Institute of Technology

    711 Hudson Street
    Hoboken, NJ  United States  07030
  • Authors:
    • JACOBS, W R
    • Mercier, J
  • Publication Date: 1970-12

Media Info

  • Pagination: 56 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00016692
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: SIT-DL-1485 Final Rpt
  • Files: TRIS
  • Created Date: Aug 27 1971 12:00AM