Is it reasonably possible to build a sounding water rockets?

[MTd2]

I found some high tensile plastic tubes which can hold up to 200bar of pressure, weight about 1.5kg/m of length and measure 110mm of diameter. Is it possible to make a sounding rocket with that, that is, a rocket that goes up to 100km high? What would it be its minimal dimensions and how much water should it carry?

Is it reasonably possible to build a sounding water rockets? (fly up to 100km, at least)

[WRA2]

Considering that the world record height is 623 meters. I would not think it was possible to fly one 100km high.

http://www.wra2.org/WRA2_Standings.php

[Brian]

Considering that the world record height is 623 meters. I would not think it was possible to fly one 100km high.

http://www.wra2.org/WRA2_Standings.php

Anything's possible, just the price range is too high for most people who turn to water rocketry.

[WRA2]

Considering that the world record height is 623 meters. I would not think it was possible to fly one 100km high.

http://www.wra2.org/WRA2_Standings.php

Anything's possible, just the price range is too high for most people who turn to water rocketry.

yea but that would defeat the original posters purpose as a sounding rocket. He is looking for a cheaper alternative to a pyo one.

[MTd2]

Well, by reasonable, I mean, something that won't require hundreds of millions to develop new technologies. It could cost millions, say, up to 5 million USD, but with things that I can buy online, for example.

[Brian]

Currently such a rocket would be unrealistic because a lot of energy is wasted on carrying water with it as such a rocket would be huge and carry a lot of water.
This said, a reduction in the water necessary would be possible with an air fuel mix, allowing the reaction mass to act compressible. This should hopefully allow, with high pressures, to accelerate the reaction mass to supersonic speeds to be utilized in a De laval Nozzle. With a large pressure vessel and a relatively small nozzle, a consistent nozzle velocity should be possible so the De laval Nozzle can work efficiently. Booster would probable be required to get this off the ground.
I know I keep bringing De laval Nozzles into the convocation but it should be possible, and required for a Sounding Rocket.

[U.S. Water Rockets]

Currently such a rocket would be unrealistic because a lot of energy is wasted on carrying water with it as such a rocket would be huge and carry a lot of water.
This said, a reduction in the water necessary would be possible with an air fuel mix, allowing the reaction mass to act compressible. This should hopefully allow, with high pressures, to accelerate the reaction mass to supersonic speeds to be utilized in a De laval Nozzle. With a large pressure vessel and a relatively small nozzle, a consistent nozzle velocity should be possible so the De laval Nozzle can work efficiently. Booster would probable be required to get this off the ground.
I know I keep bringing De laval Nozzles into the convocation but it should be possible, and required for a Sounding Rocket.

There are probably a whole array of things you could do that would really make a difference, but it would be very costly and would probably require a massive scale. If the rocket was large enough, then it could contain the necessary equipment needed to regulate the air and water mixture with precise control. The size needs to be very large to offset the weight of these things. That makes the idea impractical for regular hobby builders.