http://www.martinjetpack.com/

Now I think a 109 lb rotary would be perfect for this. Very impressive.

Tony

A great job of engineering but 10 GPH for a 200 HP 2 stroke
is BS.  a 2 stroke is lucky to see a BSFC of
.65 pounds of fuel per HP hour. That means 130 pounds
of fuel per hour or 21 gallons an hour GPH.

5 gallons of fuel would weigh 31 pounds giving an endurance
of 15 minutes. Range at 63 MPH would therefore be 16 miles.

The engine was probably an OMC or Mercury outboard motor.
Although an air cooled version would make more sense.
Flying out side in a cloud of dust would make it un
flyable :)

That will make it a good James Bond movie prop :)

An ultralight helicopter makes more sense.

Paul Lamar



Paul,  I looked at the engine secion of the site. The engine at 132
lb/122 cu in/180 ft lbs/200 HP/Cdi dual plug ignition/with a generator-may find
a place in experimentals for short distance recreational flying as a
replacement for VW based engines or on a CUB. It still needs a PSRU and
radiator so all up weight would more likely be 170 lbs.

Thanks for the
response on reworking the RX8 exhaust, that gives me the confidence to do
it.  I am still researching 3D software for cad. I read the books on
solidworks 2009 and am disinclined to use it.

They store a separate but
associated file for every sketch you draw on a face and have a lot of 6
letter file extensions all of which are native to solidworks. The drawing
commands are weak compared to my old autocad14 with multiple clicks on
flyouts and holding down shift and control keys. My 14 doesnt have a loft
command so I am looking at the 2010 version. I like having all my
construction drawings available for reference in the open drawing wich
solidworks doesn't do. I have books on catia v5 r19  and autocad 2010 coming
from e-bay, about 1200 pages each and am looking for a rhino v4 manual to
download.

These other vendors tend to say autocad is a 2D drawing program
where it is actually a 3d solid modeling  system that can do 2D drawings. Do
the model and turn it to a face and you have the 3 view drawings etc without
drawing anything. I dont have any interest in annimating and associating
drawing elements and don't want other instances of a solid changed all
through the database when the onscreen image is edited. FEA an flow
analysis  would be a deciding factor if they are included which I have heard
they are in catia.Step two is trying the evaluation versions after reading
the books. Nothing like a test drive.

george grimes

Two cycles have very bad reps George in EAA. The pistons tend to expand
and seize without warning. Lots of people have died.
A liquid cooled version is better.

IMHO The main problem with Solid Works is its steep learning curve.
It will do some things better than Rhino but then Rhino does compound
shapes like cowling's better. The beauty is you can load Rhino files into Solid
Works and do filleting better. To be really equipped you need both
but I would Start with Rhino.

Paul Lamar