Re: Jet Engine ?

On Mar 3, 5:26�pm, "Ken S. Tucker" <dynam...@xxxxxxxxxxxx> wrote:
On Mar 3, 1:36 pm, teuton...@xxxxxxx wrote:





Ken,

My friend Gisebert Nijhuis of the IFO Picture Library has a jet engine
proposal and I always wondered if it would work. Check it out:

http://www.laesieworks.com/inventions/GN021.jpghttp://www.laesieworks...

Invention: Cold turbine gas engine
Invention date: 1993
Inventor: Giesbert Nijhuis
Short description: A gas turbine engine with a turbine driven by cold
air instead of hot air. Goal: An easy to build, fuel efficient gas
turbine engine. A gas turbine engine is a beautiful engine: its mass/
power ratio is good, there are few moving parts and the fuel burning
process is very clean compared to other fuel burning engines. A
complex part though is the turbine, because it is placed in hot
exhaust gasses. My invention is a turbine driven by cold air instead
of hot exhaust gasses. The hot exhaust gasses suck cold air into the
exhaust pipe, the new cold air stream now drives the turbine.
Advantages: �A cold turbine is �much easier to construct than a hot
turbine, and the burning temperature can be higher than with normal
gas turbines, so the fuel can burn cleaner.
Problems? The air suction might not be strong enough to drive the
turbine.
Original?
Yes, I still haven't seen this anywhere else!
Down here, a photo of an air sucking exhaust pipe, to cool and/or
reduce sound or heat signature. That's not the same.
Rob

For me those illustrations are ambiguous.
Turbojet theory requires cool air is expanded, using fuel
to become hot accelerated air, captured by the turbine
and ~2/3 of that energy is fed back to the compressor.
IIRC the hotter the better.
Ken
(As Keith points out, efficiency).- Hide quoted text -

- Show quoted text -

Why the sigh and negativity? It's not my design, but Giesbert's!

Anyway, when I was a teenager I always wondered why it wouldn't be
possible to use ram-air combustable wings with internal chambers and
electro-hydraulic shifters and engine louvers to fly with? The initial
air would come from a suction inlet on top of the fuselage and
channeld into the wings via an arc vent, but as the a/c took off and
gained speed the ram wings would scoop air into the multi-combustion
chamber and burn aft.

I know it sounds crazy... but hey, I think all aviation lovers used to
draw alot and think up all sorts of weird stuff ;)

Rob

p.s. Could the Germans have twinned the pulsejets for the V-1 to make
it any faster and immune from attack??? I used to call that my
Fi-103V-1701 :)~
.

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