- #1
kach22i
- 51
- 0
I'm looking for an on-line paper/article/pdf about ducted fans; "Interrupted air flow at fan inlet (subsonic), resulting in fan stall" which I can print out and read. Centrifugal, axial and or mixed-flow fans included.
I have not had much luck doing a Google search on my own, perhaps I'm using the wrong search terms.
I'm interested in non-bell shape inlets, something "S" shaped, or with a louvered grille up ahead of the fan. I'm assuming inlet plenum volume, drag and shape also come into play.
I see inlets (on cars, airplanes, helicopters) for circulation, cooling air and auxiliary power generation which are not like those used for thrust (which are tube/foil-like). I also see on hovercraft, lift fans at right angle of flow, but thrust fans in-line with direction of motion. Is there an efficiency ratio here, what's the design threshold?
I just want to learn a little (get me to fist base so I don't sound so stupid), and maybe it will help put me to sleep at night too.
EDIT: something with pictures would be nice.
http://www.free-online-private-pilot-ground-school.com/turbine-engines.html
I have not had much luck doing a Google search on my own, perhaps I'm using the wrong search terms.
I'm interested in non-bell shape inlets, something "S" shaped, or with a louvered grille up ahead of the fan. I'm assuming inlet plenum volume, drag and shape also come into play.
I see inlets (on cars, airplanes, helicopters) for circulation, cooling air and auxiliary power generation which are not like those used for thrust (which are tube/foil-like). I also see on hovercraft, lift fans at right angle of flow, but thrust fans in-line with direction of motion. Is there an efficiency ratio here, what's the design threshold?
I just want to learn a little (get me to fist base so I don't sound so stupid), and maybe it will help put me to sleep at night too.
EDIT: something with pictures would be nice.
http://www.free-online-private-pilot-ground-school.com/turbine-engines.html
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