Powered by MOMENTUM MEDIA

Website Notifications

Get notifications in real-time for staying up to date with content that matters to you.

DST leads development of seakeeping analysis to support expeditionary capability

The Royal Australian Navy needs to know how its ships will perform at sea, because it can then define operational envelopes – DST analysis is helping to inform the operational capacity of the RAN.

The Royal Australian Navy needs to know how its ships will perform at sea, because it can then define operational envelopes – DST analysis is helping to inform the operational capacity of the RAN.

The RAN approached DST to help assess the seakeeping of the landing helicopter dock (LHD) landing craft (LLC). The LLC is the purpose-built sea-shore connector for the LHD amphibious assault ship. 

Advertisement
Advertisement

DST scientists Terry Turner and Dr Daniel Sgarioto joined an engineering task force established by the RAN’s Amphibious Combat and Sealift System Project Office (ACSSPO) to generate hard data explaining how the LLC would perform under a wide variety of sea conditions with different cargo weights. Related performance aspects were investigated by the other task force members.

To undertake their study, Turner and Dr Sgarioto joined with long-time collaborators at the Maritime Research Institute Netherlands (MARIN) to create an accurate large-scale (1:5) model of the LLC. 

"Experiments with scale models allow us to test scenarios without putting people in harm’s way if tested at full scale. Some parts of the model were very accurate, including the bow door, which was 3-D printed at scale from the as-built drawings," Dr Sgarioto explained.

The DST analysis was an important ingredient in the task force deliverables that provide immediate and long-term improvements to the LLC vessel, enabling the loading and transport of all current and future land vehicles and thus providing a force multiplier for amphibious forces.

With the model in the water at MARIN, researchers created the sea conditions of interest to the Navy, applied weights in the correct locations to represent different payloads, and observed the resulting vessel motion.

PROMOTED CONTENT

Dr Sgarioto added, "Tests like this give us a window into vessel motion, but they’re not exhaustive enough to cover all scenarios. What we did next with MARIN was develop a LLC landing craft simulation that was validated using the test data. We were then able to investigate a wider spectrum of operating conditions in a much shorter time-frame."

According to Turner, their results, combined with that from other members of the program, give the Navy a lot more assurance about how they can operate the landing craft. Demonstrations at sea of the vessel’s operational capability will now take place.

DST leads development of seakeeping analysis to support expeditionary capability
LLC_Transit_HMAS_Adelaide.jpg
lawyersweekly logo

The inaugural Defence Connect AIC Summit will place you with key decision-makers and stakeholders within the defence industry to discuss the government’s intention to improve AIC and increase the nation’s sovereign production, defence capability and resilience. Don’t miss your chance to be part of this event, register for free today to attend the live stream on 22 October. Register your interest to attend, visit: www.defenceconnect.com.au/aic-summit

more from defence connect

Sep 23 2021
HMAS Gascoyne deploys on live mine disposal ops
The Royal Australian Navy's Huon Class minehunter coastal HMAS Gascoyne is conducting a live mine disposal activity on its latest...
nuclear engineering program
Sep 23 2021
$1m donation expands Australia’s only nuclear engineering program
The Sir William Tyree Foundation has made a $1 million donation to support UNSW’s expanding nuclear engineering program and fost...
Sep 23 2021
PODCAST: Unpacking AUKUS — Australia’s nuclear submarine deal
In this episode of the Defence Connect Podcast, editor of Defence Connect Liam Garman and news editor Charbel Kadib join host Phil...