On 05/23/2011 11:48 PM, GF wrote:
Further to marine propulsion using the principles of a water jet. The
Humphrey pump I inspected at Chingford ran on coal gas, it did not
have the "high speed" suggested by Dan.
It performed ten power strokes a minute lifting ten tons of water 54
feet per stroke.The delivery pipe diameters were large, suggesting
high volume low velocity. This same pendulum action could be achieved
with suitable water conduits designed into the construction of the
vessels hull, low in the keel. the cross section of which need not
necessarily be circular.
Designing a propulsion system for a boat would probably require the
inclusion of an accumulator to provide a fairly constant pressure to
an "out put main" where jets at strategic points could be manipulated
for steering and manouverability.One feature of of an engine with a
fluid piston is the shape of the combustion chamber can be designed to
suit a constant pressure explosion, where as the piston can be cone
shaped increasing in surface area on descent.
I think it would be fairly simple and low cost to build an air
compressor to start with by boring a hole in the ground and install a
pipe within a pipe.and get a column of water "see sawing' up and down
the hole using the water as a ram to compress air, by exploding gas at
one end of the column
.
GF
Another point, if you look at theLockwood valveless pulse jet engine
<http://www.zachmiers.com/pulsejetbook/> as described by Bruce Simpson
(not Bart!), you will see "Thrust Augmentors"
<http://www.aardvark.co.nz/pjet/valveless.htm>, which allow higher
thrust by trading velocity for mass flow. That would help on a boat.
Dave 8{)
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
for more Gasifiers, News and Information see our web site:
http://gasifiers.bioenergylists.org/
