NASA/Army/Garrett turbocompounded V-6 diesel

I note that NASA report comments on their being very impressed by the Nomad,
& how the relatively low fuel costs 60 years ago cruelled its chances.

Never-the-less, if in (a potential) future, & 'green' concerns over the effects of stratospheric turbine use,
come to the crunch, it is possible that we may yet see a Nomad-type (diesel-punk?) comeback..
 
The potentially big deal here is the inherent flat rating. Heckuva good UAV motor too.


On the Army helicopter engine: note early in the report that it talks about the logistics of fuel supply. When military people think about engine efficiency they often forget that fuel at the FOB or out of the back end of a KC-135 costs more than it does on contract at O'Hare.
 
The OPOC rides again...


http://www.aviationweek.com/blogs.aspx?plckblogid=blog:27ec4a53-dcc8-42d0-bd3a-01329aef79a7&plckpostid=blog:27ec4a53-dcc8-42d0-bd3a-01329aef79a7post:378cdd1b-858e-43d7-af0e-82c2f60f1a29

http://www.aviationweek.com/Blogs.aspx?plckBlogId=Blog:27ec4a53-dcc8-42d0-bd3a-01329aef79a7&plckPostId=Blog:27ec4a53-dcc8-42d0-bd3a-01329aef79a7Post:e919cfe1-dccd-4a5f-bd47-4824edd08a3b
 
OPOC certainly has some big name support.

This bloke appears to have reason in his claims to a superior design though..

http://www.pattakon.com/pattakonPatOP.htm
 
It will be interesting to see weight estimates for these engines.
 
Some of the engines cited do include weight & power-to-weight ratio info, A..
 
can anyone please provide the NASA Report, the link doesn t work anymore:( I would really like to know what they did....
 
thank you a lot!

Great find, with a lot of information about the Napier Nomad too, very intresting!

Despite that, I believe 1000 HP @6000 rpm was a bit to ambitous for a helicopter Diesel engine...
 
Last edited:
Nicknick said:
thank you a lot!

Great find, with a lot of information about the Napier Nomad too, very intresting!

Despite that, I believe 1000 HP @6000 rpm was a bit to ambitous for a helicopter Diesel engine...
Click to expand...
They also need to add a "soft" torque converter to reduce torsional vibration.
 
So higher the rpm, so lower the torque fluctuations, this would not be a major problem.
 

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