View allAll Photos Tagged compactor
Compact is a neat little studs up font. Basic, but gets the job done. Perfect for signing mosaics.
Try writing with the font or check the details on Swooshable.
What might look like an abstract artwork is actually a novel antenna, small enough for a minisatellite, to track global ship traffic from orbit.
Commercial vessels are mandated to transmit Automatic Identification System (AIS) signals, which are used to track maritime traffic – the oceangoing equivalent of air traffic control. The system relies on VHF radio signals with a horizontal range of just 40 nautical miles (74 km), useful within coastal zones and on a ship-to-ship basis, but leaving open ocean traffic largely uncovered.
However, in 2010 ESA fitted an experimental antenna to Europe’s Columbus module of the International Space Station, demonstrating for the first time that AIS signals could also be detected from up in orbit, opening up the prospect of global ship tracking from space.
“Based on our testing, this new prototype designs offers a four-fold increase in ship detection performance,” explains ESA antenna specialist Nelson Fonseca, overseeing the project.
“The AIS detection system on Columbus employs a low-gain ‘whip’ antenna, receiving signals within a very broad beam, with corresponding potential for signal overlap and interference.
“This antenna design combines higher-gain with a more reduced footprint, allowing more of a focus on regions of highest interest, and can also discriminate between polarisations, increasing the likelihood of detection for any individual AIS signal within the antenna field of view.”
In addition, clever engineering has shrunk the overall antenna size to a size where up to five could be hosted on a single cubic-metre minisatellite.
“Despite its name, VHF is quite a low wavelength in space terms, implying a bulky antenna of about 1 m across and half-a-metre thick to operate ideally at that frequency,” Nelson adds.
“But the patterned square-shaped structure on the underlying face of our antenna changes the signal behaviour, enabling us to shrink the design to 50 cm width and 3 cm thickness – making it suitable for hosting on a smaller platform.”
The antenna was developed through ESA’s ARTES Advanced Research in Telecommunications Systems – Advanced Technology programme with Italian companies CGS as prime contractor and MVG as subcontractor in charge of the electrical design.
“CGS and MVG are highly interested in moving forward with the optimisation and environmental qualification of this outstanding antenna element,” explains Andrea Di Cintio, managing the project at CGS. “The next step will be to identify a specific mission and then optimise the design and qualification accordingly.”
“Significant reduction of antenna dimensions and weight without compromising electrical performance was challenging,” adds Andrea Giacomini, lead antenna designer at MVG. “It required a radical change in the design and validation approach. We are proud to have been involved.”
Credit: ESA–G. Porter, CC BY-SA 3.0 IGO
This 1 3/8 inch figure is the DC Comics character The Flash as seen in the game HeroClix. The red and yellow streaks behind him are actually tissue paper.
I believe this is the first toy photo I've posted to Flickr that was lit by my camera's flash. I typically use lamps, flashlights, LEDs, etc.
This image is straight out of the camera: no tweaking, no color processing, no cropping, no nothing.
Submitted to the Flickr group 7 Days of Shooting.
I will be using this camera in week 325 of my 52 film cameras in 52 weeks project:
www.flickr.com/photos/tony_kemplen/collections/72157623113584240
The best words to describe HK's cityscape.
Recently fall in love with the skyscrapers and cityscape, I spent few weekends on wandering around Central to Wan Chai. Look up and look for sth fun!! :)
Not many if any places to see a pair of SD35's running now days in the US, here GLC 383 and 384 work the interchange with the Ann Arbor RR at Osmer siding just north of Ann Arbor, Michigan. Nice compact packages these SD35's seen from above, if only EMD had cataloged an SD30, that would have been a pretty swell looking unit - August 23, 2024.
A V-22 Osprey unfolds it's rotors as the crew preps the aircraft for departure from the California International Air Show.
Instructions for my custom models for the Death Star Escape & Compactor are now ready. You can buy downloads on my website
If there’s one company in Australia with heaps of dino compactors, that company will be Suez, or SITA as I wish they were still known. Maybe in the past the company had more dino work on a national scale, but the high majority is now subject to their Sydney operations, with most of their bulk bin trucks indeed dino roll-offs. I’m sure the company has a good couple hundred open top containers, compactor containers and integrated units in Sydney, a lot of which appear to be young or freshened up. However, a few years ago I came across one of their older pieces of equipment outside their Wetherill Park transfer station, just sitting on the road unattended while its transporter was somewhere else. I love seeing a compactor just sitting on the road out from a dock, especially at night in the Sydney CBD haha It’s not often you would find a compactor of this capacity being used for garbage, so I think it’s safe to say this is a dry waste container or more likely one for paper and cardboard. You can tell this one is an oldie, with very faded paint and signage, plenty of scratches and a decent amount of rust. You can see the front of the container has been punched inwards... a result of the many times this steel box has been pushed into its resting position by the bail hook and frame. I reckon the “No Parking Day Or Night” signs should feature an additional “Offending Vehicles Will Be Towed” - not hard to do with the truck!