ULM motorized with compressed air

Gregconstruct · by **Gregconstruct** » 16/12/07, 11:45

Chatham wrote:But 2 hours of autonomy with 2 diving tanks I ask to see (I do not believe it) and the composite bottles it costs the asshole ...

In short, it is a toy for wealthy people ...

Flytox · by **Flytox** » 16/12/07, 11:54

Bonjour à tous

For the inflation of the bottles, one can approach the diving clubs which have their compressor. There are some in all the big cities. They sell "inflation" for 5 to 10 euros per 4.8 m ^ 3. I don't know if the connection standards are the same, but with some precautions (240 bars) we can adapt. : Mrgreen:

A+

Cuicui · by **Cuicui** » 17/12/07, 12:32

Is Pascal's trilobic the ideal solution for making a compressed air ULM engine?

Gregconstruct · by **Gregconstruct** » 17/12/07, 18:58

Are the compressors in diving clubs capable of delivering 240 bars?

Chatham · by **Chatham** » 17/12/07, 19:24

Most of them go up to 330bars ...

Gregconstruct · by **Gregconstruct** » 17/12/07, 19:26

Thanks for the information!

330 bars is huge! So the idea of Flytox is good!

We will end up having this ULM stolen : Cheesy:

micdhi · by **micdhi** » 17/12/07, 21:37

good evening:
I would just have a question which is not irrelevant:
why they use double effect pneumatic cylinders, with a speed multiplier behind, indeed I saw (I am part) a pneumatic cylinder, reversible linear, therefore bidirectional, which turns the propeller in one direction and more , a speed multiplier, the pneumatic star piston engine exists and there is no multiplier or reducer it is direct .... seen on another forum
http://forums.futura-sciences.com/attac ... 1191669694

loop · by **loop** » 17/12/07, 22:12

Bonsoir

K'air's pneumatic motor is designed on the basis of an industrial cylinder.
Just look at the bases and the body which is made of aluminum profile, like standard pneumatic cylinders
Its design is basic, but also limits the concept and features, including power and performance.

There are several models of compressed air motors, that of Guy negro, piston, that of Pascal, rotary, and each of them have their advantages and disadvantages

I will try to find a description of the one which is presented, opposite MDI, on the video of the compressed air car.
It looked very compact

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loop · by **loop** » 17/12/07, 22:21

Here is the address of the MDI competitor's website
I have no idea of the comparative performance of the 2 solutions
If some easily navigate in English

http://www.engineair.com.au/development.htm

Good reading

A+

Cuicui · by **Cuicui** » 17/12/07, 23:34

Di Pietro engine. Interesting. But more complex than the trilobic.

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ULM motorized with compressed air

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