Inlet passage shapes (water and air)

I believe the hot gases create the power when there is a separate power turbine behind the base turbine. As better explained by these guys:http://aardvark.co.nz/pjet/turbine4.htm
Keep in mind, any kind of propulsion prop blades need to be shaped like a wing so as to creat a low presure side and a high presure side (like a sail).
A turbine blade is thus so shaped as shown here http://www.grc.nasa.gov/WWW/K-12/airplane/powturb.html
If you want to send the info on that inventer, I'm pretty good at finding things on the web.

 

I'll try to find it today, not even http://www.zabasearch.com/ worked last time.

Not exactly right out of my sketch book (and wall of clay models), but similar. I can see some of the Joint Strike Fighter layout being doubled here and scaled down.

http://www.rutherford-research.ca/rrx/aerospace/aerospaceDesign.php

Nuclear UAV's? :blink:

 

I've never seen a turbine blade so thick and with holes, any ideas on this baby?

 

I've never seen a turbine blade so thick and with holes, any ideas on this baby?

It looks like a major attemp to keep it cool, so probably a blade for the power turbine wheel vs a compressor turbine wheel.

 

Or it could be for low speed rotation and high angles of attack.

EDIT: I stand corrected.

http://www.globalsecurity.org/military/library/policy/army/fm/1-506/ch3.htm

 

The "inlet" is what this thread is supposed to be about, but that ignores the fan/thruster and the exhaust path (swirling to straight is best).

By now you might of guessed everything is on the table. You can find the strangest sources on the Internet and apply them to your application.

Polythene ducted ventilation in piggeries
http://www.wisil.recumbents.com/wisil/nacaduct/naca-duct.htm

 

fan/thruster and the exhaust path (swirling to straight is best).

A definite plus to the internal prop (impeller) is taking the swirl out of the discharge. This used on the water jets, hence absolutely no steering torque transmitted to the steering wheel.

 

Changing the intake flow of water.

The water intake on these ships was in the foils. The water exited out the stern of the hull. Note the speed for a 133 foot vessel!
http://navysite.de/pboats/phm1.htm

 

I found this today............

http://marinejettech.com/IntelliJET Development History.htm

 

Model form........

http://www.westbourne-model.co.uk/model-boat-Jet-Drives.htm

 

I don't think these were ever built, I see some problems.

http://www.aiaa.org/tc/vstol/unbuilt/breguet/index_a.html

 

Another way to skin a cat.............

http://www.marinetalk.com/articles-marine-companies/art/Hydro-Air-Drive-DKG00123645TU.html

The Hydro Air Drive is highly efficient at high speeds because the inlet water does not have to bend upward and has less wetted area friction compared to the inlet water flowing into the fully submerged standard water-jet rotor.

 

Tell me all about Diagonal or Mixed Flow Fans and Compressors

Are they more efficient than an axial fan with a 90 degree elbow discharge and stator vanes to straighten the flow?

How do the pressure recovery losses compare? My meaning here is which fan (Diagonal or Axial) has a superior ability to draw air into it's self? This condition may be found in serpentine or convoluted ducted air intakes found in scaled RC aircraft.

http://en.wikibooks.org/wiki/Jet_Propulsion/Compressors

http://en.wikipedia.org/wiki/Diagonal_or_mixed-flow_compressor

Real Life Example:
http://www.jinzhoufan.com/doce/index02.htm
XLT2 Diagonal-Flow Fire-Protection Fan

Computer fans:
http://www.arrow.net.bz/aws/resource_mag/august_2004/engineering/ebm.html