US, UK Test New Aircraft Landing Concepts for Aircraft Carriers

first_img View post tag: News by topic Bae Systems has been actively involved in the design of the Shipborne Rolling Vertical Landing (SRVL) manoeuvre being developed for the UK MOD when the F35B Lightning II Short Take-off and Vertical Landing (STOVL) aircraft and the new Queen Elizabeth Class (QEC) Aircraft Carriers come into operational service.The SRVL manoeuvre provides enhanced ‘bring back’ meaning the aircraft is capable of bringing back more payload i.e. weapons and fuel over vertical landings owing to the wing lift created by forward airspeed at touchdown. Joint research efforts on both sides of the Atlantic have developed enhanced aircraft flight controls and displays which are applicable to both the F35C Carrier Variant arrested recovery and the F35B STOVL variant SRVL recovery to the aircraft carrier, albeit separated by some 70 knots approach airspeed.The recent flight simulation trials at Warton tested these enhanced control law modes for F35C arrested recoveries to a Nimitz class carrier and gained positive feedback from the US Navy and F35 test pilots involved in the trial. James Denham (Aeromechanics division at the US Naval Air Systems Command) said: “During this trial we’ve identified improvements to deliver more accurate touchdowns, less bolters and reduced pilot training. Ultimately, what we’ve been able to test in this simulated environment allows us to inform future Concepts of Operation. The co-ordination and co-operation between us all has been extraordinary.”The facility at Warton is currently engaged in supporting UK carrier integration and risk reduction studies, realistically simulating the landing and take-off characteristics of a F35B STOVL variant to and from the Queen Elizabeth class carrier allowing engineers and pilots to help define and refine the design, layout and operations for both platforms. The work being undertaken in the simulator is generating large savings as refinements can be fed into the design phase of both programmes. The simulator can also be switched to represent the F35C Carrier Variant and US Nimitz carrier deck, as was demonstrated in this trial. Further trials are due to take place soon to test the same control law mode for F35B SRVL recoveries to the UK’s QEC aircraft carriers with the US Navy observing. [mappress]Press Release, March 27, 2014; Image: BAE Systems View post tag: Defence View post tag: Navy View post tag: Carriers View post tag: Aircraft US, UK Test New Aircraft Landing Concepts for Aircraft Carriers View post tag: test Share this article Equipment & technology View post tag: Defensecenter_img View post tag: Concepts Back to overview,Home naval-today US, UK Test New Aircraft Landing Concepts for Aircraft Carriers BAE SYSTEMS’ F35 SIMULATORLanding fixed wing aircraft on aircraft carriers could be revolutionised thanks to a recent piloted flight simulation trial. The trial saw UK and US partners on the F35 programme use BAE Systems’ F35 Simulation facility at Warton to test new concepts for landing. View post tag: Naval View post tag: New March 27, 2014 View post tag: Landing View post tag: US View post tag: UKlast_img read more

Malaria in 3-D

first_imgAlong with being the hottest thing at the local multiplex, 3-D imaging has entered the laboratory as an important research tool.Using an imaging technique known as high-speed holographic microscopy, Laurence Wilson, a fellow at Harvard’s Rowland Institute, worked with colleagues to produce detailed 3-D images of malaria sperm — the cells that reproduce inside infected mosquitoes — that shed new light on how the cells move. The work was described Nov. 5 in the Proceedings of the National Academy of Sciences.“The working assumption was that this structure moved through a consistent clockwise beating,” Wilson said. “But what we found was, if you look at the malaria swimming, it doesn’t just move in a ‘right-handed’ way — it actually turns out to be a very general motor.“The only way we could identify this was because we could see the 3-D structure,” he continued. “We could never do that before, and we found that there’s a whole zoo of shapes and waveforms it uses. What stuck out, however, was the idea that it does a right-handed stroke, then a left-handed stroke — so it relies on the strict alternation between the two.”The hope, Wilson said, is that the research might illuminate how other, similarly constructed cells — such as cilia inside the lungs — are able to move. In addition, understanding how malaria parasites move may one day help scientists develop new strategies for combating the disease by halting its ability to reproduce.Holographic imaging of malaria sperm Holographic microscopy creates a “stack” of images that can be processed by computers to create 3-D models. The raw data is acquired rapidly, allowing the sample to be imaged thousands of times per second in 3-D. This ability was key to imaging a fast-moving object such as the malaria sperm.For researchers such as Wilson, the structure of malaria sperm is most compelling as an area of study.As in similar cells, the malaria sperm is primarily built from a grouping of protein microtubules — nine pairs of tubes are arranged in a circle around a central pair, all of which are connected through radial spoke proteins. As the tubules move lengthwise against each other, the cell is able to produce waves along its length, propelling it forward.“That’s how you get a sperm tail beating, or cilia beating in your lungs,” Wilson said. “The nice thing about malaria, however, is that from a mechanical point of view, it’s relatively primitive. Unlike other model systems we looked at — all of which have a head or cell body attached — malaria has no accessory mechanical structures. There’s only a cell membrane and some DNA arranged along its length.”Holographic microscopy creates a “stack” of images that can be processed by computers to create three-dimensional models. The raw data is acquired rapidly, allowing the sample to be imaged thousands of times per second in 3-D. This ability was key to imaging a fast-moving object such as the malaria sperm.“Holographic microscopy has been used for some time, but no one has tried to do exactly this sort of imaging before,” Wilson said. “No one has ever used it to look at the shape of something in this way, or in the same level of detail that we have.”While the study gives researchers the clearest picture yet of how such cellular motors work, Wilson said studies are already in the works to get a better understanding of how they can go wrong, and what the consequences may be.“The hope is if we know how this malaria sperm works, then when similar cellular motors go wrong, we can say why they’ve gone wrong,” Wilson said. “When these things go wrong in the human body, it can lead to problems like infertility and polycystic kidney disease — all sorts of unfortunate things can happen if these structures don’t work properly.”last_img read more

Katarina Line introduced a new luxury mini cruiser

first_imgAs is already a tradition every year, this season the Opatija agency Katarina Line presents a new ship in its fleet, which from this Saturday will adorn the Adriatic Sea and the ports in which it will dock.Adriatic Sun is a new DELUXE SUPERIOR category boat, 47,2 meters long and 8,6 meters wide, which provides comfortable accommodation for 36 passengers in 19 modern double cabins.The immediate family of Stipe Vukovic, the owner of this beautiful mini cruiser, has been cooperating with the Katarina Line agency for many years and began its long-term partnership with the Victoria Traditional Ensuite category, followed by Spalato, Premium Superior and Fantasy, Deluxe.last_img read more