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RBnDFW RBnDFW is offline
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Default Very cool engine

Gerald Miller wrote:
On Thu, 13 Aug 2009 00:09:23 -0400, "Ed Huntress"
wrote:

"Don Foreman" wrote in message
...
On Wed, 12 Aug 2009 13:50:43 -0400, "Ed Huntress"
wrote:

Maybe everyone knows about this engine but me, but if not, this is a very
cool little piece of machinery worth looking into. It's the rotary-valve
4-stroke used in the Honeywell hovering drone that's being prepared for
field use by the US Army:

http://www.nytimes.com/2009/08/12/bu...l?ref=business

It's built by a British company, RCV Engines Ltd., and it's amazingly
simple. They've made available a 7-year-old SAE paper about it, with lots
of
detail about the seals (for anyone who's followed rotary-valve engines
over
the years, that's where most of the action is):

http://www.rcvengines.com/pdf_files/saepaper.pdf

It must be pretty darned reliable to be used in the drone, so this is more
than just another weird engine curiosity.

Here's RCV's home page. They make model engines, too:

http://www.rcvengines.com/index.htm
I saw that in the lab and they flew it once at lunchtime a few years
ago.

I'd really like to see one run -- not that you could tell much by watching
it, but I'd like to see it anyway.

Just like I would like to see the Napier Sabre engine running, just to
say I'd seen one running, likewise the big four bank radial, or the 24
cylinder "W" Allison.


Or the 16-cylinder 1.5-liter W BRM