axial flow fan design

[insideman]

Stepanoff advocates solidity = 4.75 X (gh/um^2) . I am uneasy about this, thinking that less chord would often be beneficial by decreasing drag losses, provided that other inefficiency is not thereby introduced.
The benefit of of improving efficiency, even a couple of points, would be incalculable. Imagine all the worlds radiator fans suddenly consuming slightly less fuel.

Can you point me toward sources that either support or refute Stepanoff?

[deleted-71490]

Insideman:

These may be of value to your work.

http://www.pub.ro/English/Ects/Mecanica/Descrp/EE.htm

http://caltechbook.library.caltech.edu/22/01/chap3.htm

http://caltechbook.library.caltech.edu/22/01/chap7.htm

naca.larc.nasa.gov/digidoc/report/tr/58/NACA-TR-758.PDF

http://www.ocp.tudelft.nl/dredging/miedema/ 2001_WODCON_16_Miedema/wodcon2000%20miedema.htm

http://www.ocp.tudelft.nl/dredging/ miedema/1996_WEDA/weda96.htm

http://www.ocp.tudelft.nl/dredging/ miedema/1999_TAMU/tamu99.htm

Matt Mulanax

[insideman]

Some of the sited sites were simply not there. Two denied entry to me. One mentioned solidity. but not Stepanoff. Two concerned dredging, not fans. Where next?

[deleted-71490]

Insideman:

http://www.galleryoffluidmechanics.com/

caltechbook.library.caltech.edu/22/01/chap3.htm (see if you can get this text from a university library)

http://www.johnston-pump.com/Miscellaneous/ DownloadDoc.asp?DocID=242

These may be of value.

Good luck using the engineering boards.

Matt Mulanax

[insideman]

Thank you. But I still see nothing apropos my need. Maybe I'm too thick headed?