Israeli Company Makes Dramatic Improvement in Jet Engine Design


By Joshua18
September 14, 2010
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From an article ("Powering up") in the anti-Zionist newspaper, The Economist:

"Jet engines: A nifty new engine design promises to improve combustion efficiency, thus cutting fuel consumption and reducing emissions

Jet with a twist

IN A world worried about global warming, improving the cleanliness and efficiency of jet engines is a priority for airlines and aircraft manufacturers. It is not just altruism: greener engines also use less fuel, and so cut costs. Incremental improvements over the years have made a difference. Modern jets burn only half as much fuel per unit of thrust as their 1960s counterparts. But some people think it is time for a radical redesign. One of those people is David Lior, the boss of a small Israeli firm called R-Jet Engineering.

Jet engines rely on Isaac Newton’s third law of motion: for every action there is an equal and opposite reaction. When a jet is running, a compressor at the front draws in air and compresses it (see illustration). This air is guided and diffused by static blades to allow for easier ignition when it is mixed with fuel and ignited in a combustion chamber. The reaction comes in the form of rapidly expanding hot gases, which blast out of the rear of the jet and thus drive the aircraft forward. As they do so, they pass through another set of static blades which direct and accelerate the hot gases to turn a turbine. The turbine is connected by a shaft to the compressor at the front, thus turning it and keeping the whole process running.

The approach taken by R-Jet involves having the air and hot gases in the combustor rotate with the compressor and turbine. To achieve this, the company uses what it calls an orbiting combustion nozzle (OCN), which turns with the compressor to inject the air into the combustion chamber as a vortex. The vortex is maintained by blades that rotate on the inner casing of the combustor. This swirling action helps mix the air and fuel for a more complete and much quicker combustion. The hot gases then exit, also in a vortex, to drive the turbine."

For the rest of the article, follow the link:

http://www.economist.com/node/16909889?ref=nf

COMMENTS

mattpryor

Tue, 09/14/2010 - 10:59

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3 points

Cool ;)


Yvetta

Tue, 09/14/2010 - 11:50

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3 points

That's hot!


jose (not verified)

Tue, 09/14/2010 - 13:21

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3 points

I suggest all anti-sem... sorry, anti-Israel countries boycott this !


telegramsam

Tue, 09/14/2010 - 13:43

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-4 points

So basically it's a ram jet. That's been around since tha 1950s. And if the Economist is anti- Zionist so is the ZF.


Joshua18

Tue, 09/14/2010 - 14:32

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2 points

"So basically it's a ram jet."

Jews aren't smart, they're just lucky, or they steal, or they lie. Anyone who has ever visited a neo-Nazi website will recognise in telesh*t's response one of the 1001 reasons why Jews aren't successful according the the Jew-haters of the world. Telesh*t acquired his knowledge of science the same place he acquired his prejudices and his mom - the gutter.

"And if the Economist is anti- Zionist so is the ZF."

Ha! No doubt he also imagines that the Institute for Historical Review really is "an independent educational research and publishing center".


mattpryor

Tue, 09/14/2010 - 14:52

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1 point

Joshua:

The poster that you are replying to rarely has anything useful, intelligent or interesting to say. Usually it is negative and repetitive and best ignored.


jose (not verified)

Tue, 09/14/2010 - 19:21

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1 point

Je... sorry Israelis are soooo stupid that in less than fifty years, representing less than 0.1% of the world population, they managed to get only nine Nobel Prizes. More than the all Muslim countries altogether, representing 20% of the world population. The odds against that are astronomically low!

Besides Israel is the one country with the highest number of patents per inhabitant. Very low creativity, no doubt.

Non-Jewish geniuses on this blog, on the other hand, understand all from a journalistic popularisation of a technical invention, and can explain us why this invention is not one and will not be a success anyway. Probably experts in aeronautics! How lucky we are to have them write on this blog. Don't you feel honoured just to be able to read them ?


happygoldfish

Tue, 09/14/2010 - 21:42

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0 points

i'm puzzled … this "new design" was discussed in an aviation forum in february 2007, based on a 27/2/07 flightglobal ("serious about aviation") article by arie egozi …

it doesn't seem to have got very far in over 3 years!


amber

Tue, 09/14/2010 - 22:34

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1 point

Very well put Joshua18.


Jonathan Hoffman

Wed, 09/15/2010 - 06:55

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1 point

T-Spam has been away for two weeks, it was so nice.

I thought (make that hoped) he had been banned.....


telegramsam

Wed, 09/15/2010 - 08:10

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0 points

Amazing how the far right always want people banned.


amber

Wed, 09/15/2010 - 10:57

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-1 points

Amazing how morons like telegramsam, Jonathan Hoffman's obsessive stalker, can have a brain without actually using it.


Anonymous

Wed, 09/15/2010 - 11:05

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0 points

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