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Captain Cook Jet

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  • Captain Cook Jet

    The Captain Cook Memorial Jet was constructed on behalf of the Commonwealth Government by the National Capital Development Commission to commemorate the bicentenary of Captain James Cook's discovery of the East coast of Australia. It was officially inaugurated on 25 April 1970 by Her Majesty Queen Elizabeth II.
    Water is drawn from the lake through a 50-metre intake tunnel to the underground pump house. There are two 4 stage vertical spindle centrifugal pumps capable of pumping 250 litres per second against a head of 183 meters. Each of the pumps is driven by a 560 kilowatt water-cooled 3.3 kilovolt electric motor. Operation of the jet can be carried out both remotely using programmable logic controls and also locally using switchgear.
    The water is then pumped through a 450mm diameter steel pipeline which extends approximately 205m from the pump house, through the tunnel and along the lake bed to the concrete nozzle housing structure. The nozzle housing is located 150 metres from the lake wall in the central basin of Lake Burley Griffin . The nozzle housing accommodates 2 discharge nozzles - a main nozzle which operates with both pumps operating simultaneously and a resulting jet of water 147m tall, plus an auxiliary nozzle which operates with a single pump operating and a resulting jet of water 110m tall. Remote controlled nozzle selector valves, located in the nozzle housing, direct the flow to either the main or auxiliary nozzle. The exit velocity of water leaving the nozzles is 260kph and the mass of water in the air at any time is 3 tonnes on single pump operation and 6 tonnes on dual pump operation.

    The fountain has been under repair for years - but at last it's operational again








    Last edited by Alan; 19-02-2017, 07:44 PM.
    Alan

    Still trying to make the ordinary look extraordinary

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  • #2
    Good description Alan, the first one is my favourite, it looks terrific.
    Lloyd
    Never make the same mistake twice, there are so many new ones, try a different one each day
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    • #3
      Beautiful photos Alan..
      IShootACanon

      Web: isacimages.com.au
      Why do they put expiry dates on cartons of sour cream?

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      • #4
        Thanks Gents - Autumn approaches, which is the only season worth experiencing in Canberra
        Alan

        Still trying to make the ordinary look extraordinary

        D7000 | D90 | Coolpix S31 | iPhone 6s | Mac

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        • #5
          Autumn? what's Autumn hahaha We don't have that up here!
          Lloyd
          Never make the same mistake twice, there are so many new ones, try a different one each day
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          • #6
            You don't know what you are missing - it is worth experiencing...

            Brilliant Autumnal tree colours, 'Enlighten' Light show to rival Sydney's Vivid, Skyfire Fireworks, Stunning Weather, Balloon Festival.

            We have just had a successful Multi-Cultural Food and Wine Festival.

            It's sad that the rest of the year is rubbish ...
            Alan

            Still trying to make the ordinary look extraordinary

            D7000 | D90 | Coolpix S31 | iPhone 6s | Mac

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