QinetiQ adds cavitation tunnel to its ship testing capabilities
The reopening completes QinetiQ’s International Maritime Consultancy and Software (IMCS) testing capability, which combines state-of-the-art physical and virtual hydrodynamic testing with naval architecture advice and QinetiQ’s advanced ship design software, Paramarine. The facilities include Europe’s largest hydrodynamic testing tank, used to test ship and submarine seakeeping and manoeuvring, and a 270-metre-long towing tank, used to test ship and submarine resistance and propulsion.
Samantha Hill, Test and Evaluation Business Manager for International Maritime Consultancy and Software at QinetiQ, said: “We have reopened our cavitation tunnel in response to a demand from our customers to provide a comprehensive set of test and evaluation facilities all under one secure roof. Furthermore, regulatory and economic factors have driven a need for quieter and more efficient ships.”
“Cavitation around a poorly designed propeller can damage a ship, increase fuel bills, and generate noise and vibration that disturbs marine life and causes discomfort for passengers and crew. Physical testing is an indispensable tool to observe and measure cavitation and to reduce its effects. Coupled with our strong computational fluid dynamics capability, QinetiQ can provide a full propeller optimisation service.
“The reintroduction of the cavitation tunnel further provides the final piece in our naval architecture consultancy service, which enables customers to design vessels and test them for seakeeping, manoeuvring and propulsion in a single secure location.”
Housed inside a three-story listed building at QinetiQ’s Haslar site in Portsmouth, the Haslar tunnel contains 180 tons of water, circulated by an impeller to speeds of up to eight metres-per-second. The testing section measures 5.35m in length by 2.4m width and 1.2m in height allowing it to accommodate models of up to five metres in length.
Cavitation is the formation and collapse of bubbles around a moving fast-moving component in the water, leading to vibration, erosion and decreased efficiency. Before a specific propeller design is cleared for production, it needs to be tested in model scale in the cavitation tunnel either on its own or behind the aft model of the ship.
For more information, visit the QinetiQ website at https://www.qinetiq.com/services-products/maritime/Pages/default.aspx
- A FTSE250 company, QinetiQ uses its world class knowledge, research and innovation to provide high-end technical expertise and advice, to customers in the global aerospace, defence and security markets. QinetiQ's unique position enables it to be a trusted partner to government organisations, predominantly in the UK and the US, including defence departments as well as other international customers in targeted sectors.
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