developments in turbofan engines

[avinod4all]

hello,
My name is vinod, I am student and currently I am doing a project on developments in turbofan engines. I want to know the developments taking place in the turbofan engines with respect to efficiency and noise. Also, I want to know more about propfan (unducted turbofan) engines, can anyone suggest any website to get more information about propfan engines other than wikipedia.

[JaredJames]

Have you tried Google yet?

As this is a project, specific answers can't be given.

Perhaps you could show some of the websites you've investigated, or show us some results you've gathered. This is purely so we can be sure we aren't doing the work for you.

[Dr Lots-o'watts]

How about this?
http://www.pwc.ca/en/engines/engines

I had a statistics professor who once worked for them. God he was funny. He was getting close to retirement and he acted like he almost didn't care anymore. He had such hilarious manners.

[35 AoA]

NASA did a study during the oil crisis in the 1970's on the subject of propfans. That would probably be a good place to start, as I'm sure they laid the groundwork for any continuing investigation of this kind of technology.

Not familiar with this project, but it appears there is some more current research going on as well.....below
http://f00.inventorspot.com/images/Test%20Prop.jpg

[mugaliens]

Not familiar with this project, but it appears there is some more current research going on as well...

Not to mention real-world results of two decades of test and evaluation:

http://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Hercules.propeller.arp.jpg/220px-

Yes, technically it's a turboprop... But it works better at lower velocities than the depicted designs.