22 novembre 2017 | International, Aérospatial
DAVID PUGLIESE, OTTAWA CITIZEN
More from David Pugliese, Ottawa Citizen
The Canadian government highlighted at the recent Vancouver UN meeting its plan to have RCAF helicopters sent on United Nations missions.
Canadian government statements talked about an Aviation Task Force of armed helicopters while government staff provided details that the rotary contribution could include four armed helicopters and two “utility helicopters.”
Armed helicopters?
That specific phrase was selected because the UN had asked for attack helicopters. Since Canada doesn't have attack helicopters, government officials figured they would use the phrase “armed” to make it appear like they were meeting UN needs.
So Defence Watch asked what exactly the RCAF is committing to the UN.
The armed helicopters will be Griffons, equipped with door guns, according to the Canadian Forces.
The “utility” helicopters will be RCAF Chinooks. (the phrase utility helicopter in the Canadian context tends to refer to Griffons but in this case the government is using “utility” to refer to Chinooks).
And when or where will these helicopters be deployed? No one knows. It could be a couple of years.
14 avril 2021 | International, Aérospatial
Lockheed Martin has secured a USD447.2 million contract for the production of 12 MH-60R Seahawk multirole naval helicopters for the Republic of Korea Navy (RoKN). The US Department of Defense (DoD) announced on 12 April that work on the Fore...
8 décembre 2020 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité
by Jon Grevatt The US Department of Defense (DoD) has identified four additional Chinese corporations that it claims have links to China's military. The companies' inclusion on the list of ‘Communist Chinese military companies' means that US investors will be prevented from buying stock in the firms from January 2021. The new list, which takes the number of blacklisted Chinese companies to 35, features corporations that are known primarily for operations in commercial domains. They include the Semiconductor Manufacturing International Corporation (SMIC), China Construction Technology Company (CCTC), China International Engineering Consulting Corporation (CIECC), and China National Offshore Oil Corporation (CNOOC). The DoD said these firms' inclusion on the list is aligned with US efforts to tackle China's military-civil fusion (MCF) strategy, which seeks to adopt advanced commercial technologies for military gains. It said, “The [DoD] is determined to highlight and counter the People's Republic of China's (PRC) military-civil fusion development strategy, which supports the modernisation goals of the People's Liberation Army (PLA) by ensuring its access to advanced technologies and expertise acquired and developed by even those PRC companies, universities, and research programs that appear to be civilian entities.” The DoD added that the list of Chinese companies will continue to be updated “with additional entities as appropriate”. In response to the listing, China's foreign ministry spokesperson said on 4 December that the move constituted a “groundless suppression”. https://www.janes.com/defence-news/news-detail/us-expands-list-of-communist-chinese-military-companies
29 août 2018 | International, C4ISR
By: Kelsey Atherton The ocean hides what it contains, and it is in that hiding that submarines have their power. Lurking under seas, at first with just enough capability for an attack run and now with the ability to lurk for months at a time, submarines remain power out of reach, unseen until engaged in combat or resupplying in a friendly port. That stealth comes at a cost, however, besides the simple perils of existing underwater. When submerged, submarines are more or less on their own until they resurface again, since radio waves do not travel well through seawater. Or they are for now. New research by MIT, presented at a conference in late August, devised a way for submerged submarines to communicate wirelessly with people on the surface by combining hydroacoustics and acoustic radars. Presently, submarines communicate either across normal radio frequencies when surfaced or through hydroacoustic signals and listening posts underwater that can transmit the messages back to counterparts on shore. Very and extremely low-frequency radio waves can be transmitted in a way that submarines can listen to below the surface, but it's a one-way form of communication, from stations on land to submarines. To get something responsive, with the flexibility to communicate away from static seabed hydrophones, needs something else. Specifically, it needs a way to combine hydroacoustic transmission from the submarine through water that can then be converted into a useful data. “We present a new communication technology, translational acoustic-RF communication (TARF),” write paper authors Francesco Tonolini and Fadel Adib of the MIT Media Lab. “TARF enables underwater nodes to directly communicate with airborne nodes by transmitting standard acoustic signals. TARF exploits the fact that underwater acoustic signals travel as pressure waves, and that these waves cause displacements of the water surface when they impinge on the water-air boundary. To decode the transmitted signals, TARF leverages an airborne radar which measures and decodes these surface displacements.” In testing, they demonstrated that the communication technique can transfer data at standard underwater bitrates up to 400bps, and even do so with surface waves 6.3 inches crest-to-crest, or 100,000 times larger than the surface perturbations made by the acoustic transmitter. Right now, this communication is one-way. While the signal transmitted up from the water produces useful information at the boundary with the air, a signal transmitted through the air downwards would disintegrate on integration with water. This one-way is distinct from previous forms of communication with submarines, however, as it lets the submarine talk without revealing its position to surface sensors. Despite the limitations, and the earlierness of the research, Tonolini and Adlib see a bright future for the technology, as a way to enable a host of new technology in machines. The technology, they write, can enable “many applications including submarine-to-drone communication, deep-sea exploration, and subsea IoT (Internet of Things). https://www.c4isrnet.com/c2-comms/2018/08/28/mit-discovers-way-for-submarines-to-talk-to-drones