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Technology

University of Cape Town Team Breaks World Water Rocketry Record (uct.ac.za) 35

New submitter Cycliclogic writes: A team of engineers based at the University of Cape Town recently had their record breaking flights of their water powered rocket Ascension III ratified by the Water Rocket Achievement World Record Association. This record is for a single stage rocket power purely on pressurized water. Two launches must be completed within two hours, the record being set at the mean above-ground altitude of the two flights. The record now stands at a whopping 2723 Feet (830m). You can watch videos of the launches here. (Warning: they're loud.)
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University of Cape Town Team Breaks World Water Rocketry Record

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  • 0.8 km down... (Score:4, Interesting)

    by Pseudonymous Powers ( 4097097 ) on Thursday October 08, 2015 @02:28PM (#50688409)

    ...only 152.2 km to go.

    In all seriousness, I wonder what they could achieve with a multistage version.

  • by HornWumpus ( 783565 ) on Thursday October 08, 2015 @02:36PM (#50688467)

    Back in the 70s. Bought a 10,000psi stainless cylinder at surplus. Screwed on a fin set, nozzle and burst plate he constructed. Then filled it 80% with water before building a bonfire around it.

    They drank beer until the pressure plate popped out at about 8,000 psi.

    They were walking around, stomping out fires in the dessert when a group of nice airmen in a Huey invited them to come and talk. They denied everything.

    Apparently Russian launch detection satellites saw the flight. He claims they made 10k meters+.

  • TFA (Score:4, Funny)

    by PPH ( 736903 ) on Thursday October 08, 2015 @02:47PM (#50688561)

    I just scanned the articles and didn't see what sort of tank pressures these things use.

    Also, do I have to use a tank of water? Or can I make my own as I go? One tank of LH2, one of LO2 .....

    • Rules say has to be "Mainly Water" and nothing "that might harm the environment"

      I wonder if you have to charge it with air, or if you can charge it with hydrogen or helium gas to pressurize it?
      • Rule 2: Rocket must use compressed ambient atmospheric air as its energy. Other gasses have much higher compression ratios and there needs to be a baseline so the record is fair to all. (see section II for special rules regarding bottled air).

      • Rules say has to be "Mainly Water" and nothing "that might harm the environment"

        Obligatory Danger Warning: this rocket gives off Hydrogen Hydroxide!

    • Here's a video [youtube.com] that has some of the rocket details in the intro and the flight data at the end of it.
  • Lets ban water, so the terrorists cant built water-rockets.

  • The most egregious abuse of the Wadsworth constant.

    Seriously. Eleven and a half minutes? The Shuttle used to take less time to get into orbit than this thing sat there doing nothing.

Somebody's terminal is dropping bits. I found a pile of them over in the corner.

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