Electrical Technology’s Post

How is Grounding in AC/DC Systems Used for Protection in Aircraft, Ships, and Submarines?

The briefing started with Capt. Chris Polk explaining how Naval Sea Systems Command (NAVSEA) successfully managed to re-initiate the production line for the Heavyweight #Torpedo (#HWT) MK 48 Mod7, a torpedo it had stopped building in 1996. “In FY16, when we re-initiated the #productionline, we faced several #challenges, in particular the fact that, to use an analogy that can speak to everyone, we wanted to build the 1996 Mustang, we 1996 parts the way we used to build mustangs in 1996 but with today’s standards. All challenges across the board.” #NAVSEA addressed these challenges by initially improving #workflow and processes through increased #automation and workforce development. It also tackled #obsolescence by making “thousands of changes” to the technical data package. Finally, it worked with the Blue Force Alliance and #industry partners to identify supply chain weaknesses and strengths, removing duplications and supporting where necessary. The next step is encouraging industry and #government investment. Next, Capt. David Vehon explained that NAVSEA is also working to modernise the #submarines ’ fire control system. “When we do #modernisation, we do it all in one package – #communications, #EW, #sonar, #firecontrol – but we only have a limited number of #technicians (industrial welders, fibre optic technicians), so this has to be a very orchestrated event, and we all have to be aligned.” Capt. Vehon explained that there are multiple ways in which the industry can help in the process. First, it could find a way to decouple hardware and software to have hardware that can last multiple years while the software is regularly updated. Second, it can help with NAVSEA’s ability to track, fix, and correct #legacy edge systems so that everything will be working when the modernisation is finished and the systems go into testing. Third, new systems often require more electrical power and cooling, affecting modernisation timelines. The industry could help by developing plug-and-play solutions requiring no #submarine cooling or electrical distribution modifications. Fourth, it would be helpful to have solutions capable of reducing the time needed to connect all servers and systems inside the submarine to the fibre optics and electrical systems. Fifth, automation of all system #testing would also considerably decrease modernisation timelines. Finally, #digitalising predictive measures would go a long way to create a more efficient maintenance and/or modernisation #schedule. #mai #marineacoustics #innovation #technology #capability #forcemultiplier #underseawarfare #weapons #submarines Robert Oswald US Navy #navy #usnavy NAVSEA Warfare Centers (NSWC/NUWC) Naval Undersea Warfare Center Newport #NUWC https://lnkd.in/eCjYP8hN

**** Families of Marines killed in 2022 Osprey crash sue Boeing and other manufacturing companies for negligence **** The Boeing Osprey crashes are a direct result of their unreliability; not due to pilot errors. Now supposedly reliability "science" and reliability Engineering had been applied to the Osprey aircarft following the numerous MIL specifications of reliability studies, analysis, testing and so on. But they still proved to have a low reliability. This is a useful example of how incompetent modern reliability engineering theory-practice is when it comes to machinery. The end result is death of innoccent people, all because the reliability studies "proved" acceptable reliability. #reliabilityengineering #reliability #aviationincident #aviation #reliability #reliabilityengineering https://lnkd.in/gTqv2VhX https://lnkd.in/gS7jcmHe

Learn how ThayerMahan, Inc.’s scalable maritime surveillance capability can mitigate significant shortfalls in submarine construction and maintenance. #Navy #submarine #undersea #unmanned #uncrewed #surveillance #autonomous #intelligence #MDA #ThayerMahan #Seabeyond

Why does the C-130 use propellers and not jet engines? The C-130, a formidable presence in the sky, is a military aircraft that's been designed with specific missions in mind. Its use of propellers over jet engines is a deliberate choice that enhances its operational capabilities. Propellers are part of what's known as turboprop engines, which combine the reliability and efficiency of traditional propeller aircraft with the power of a turbine engine. The main reason for choosing propellers is their efficiency at lower speeds and altitudes, which is where the C-130 often operates. This efficiency translates into better fuel economy and longer flight times, which are crucial for the aircraft's role in providing close air support, air interdiction, and force protection. The propellers also allow for shorter takeoffs and landings, enabling the C-130 to operate from more rugged and less prepared airstrips, which is often the case in conflict zones. Turboprop engines, like those on the C-130, are less susceptible to damage from debris and small objects being sucked into the engine, which is a significant advantage when operating in austere environments. The propellers make the aircraft's engines less likely to ingest foreign objects, reducing the risk of operational problems and maintenance issues.

United States Special Forces on March 5 destroyed an Air Force Boeing 747 that had been airborne over the Texas Panhandle when inexplicable fires erupted on February 26, a source in General Eric M. Smith’s office told Real Raw News. The YAL is a modified Boeing 747 with an airborne laser (ABL). It was a collaborative project conceived in 2004 by the Department of Defense, the Air Force, and DARPA as a testbed for intercepting and destroying tactical ballistic missiles while in the boost phase. In 2011, then-Secretary of Defense Gates announced the project’s cancellation, claiming the airframe would need a more potent laser (20-30X) to prove viable on evolving battlefields such as Iran, and adding that the development of such a weapon was financially and technologically infeasible given the current state of technology. In February 2012, the prototype—ostensibly the only one produced–landed at Davis-Monthan AFB, Arizona, where it was purportedly placed in storage at the “boneyard” operated by the 309th Aerospace Maintenance and Regeneration Group until it was ultimately scrapped in September 2014 after all usable parts were removed. Our sources, however, said the decommissioning story was a ruse to conceal a catastrophic accident. As the story goes, technicians were evaluating an upgraded chemical oxygen iodine laser (COIL) when the platform misfired and vaporized the airplane and six workers. What the Air Force placed in the “boneyard” was a plastic and Styrofoam mockup, our source said. Moreover, the DOD built four YAL-style aircraft for $26 billion, including development and research. YAL­-2, of which there is no public record, caused the Texas Panhandle fires. On March 4, White Hats learned that YAL-2 took off from Fresno Yosemite International—a joint military-civilian airport—at 3:00 a.m., February 26, and flew southeast toward the Texas Panhandle. It reached Amarillo airspace approximately 2.5 hours later, loitering there at an altitude of 37,000 feet for another 45 minutes. During that time, the plane circled above Pampa and Fritch, Texas, uncoincidentally close to what would be named the Grapevine Creek and Smokehouse Creek fires, the most devastating in Texas’ history. YAL-2 then climbed to 39,000 feet and flew northeast, landing eventually at Wright-Patterson Airforce Base in Dayton, Ohio. Since a YAL holds 64,000 gallons of fuel and can remain airborne for 16 hours at cruise speed without mid-air refueling, the roughly 8-hour trip was well within its tolerance. Our source would not share how White Hats obtained evidence of the flight’s existence—it does not appear on publicly available flight tracking applications—but said the proof compelled General Eric M. Smith to orchestrate a surgical, boots-on-the-ground operation, hopefully before YAL-2 again took to the skies. Continued on page 2:

𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄 𝗲𝘅𝘁𝗿𝗲𝗺𝗲 𝘁𝗲𝗺𝗽𝗲𝗿𝗮𝘁𝘂𝗿𝗲𝘀 & 𝗘𝗠𝗜 𝗰𝗮𝗻 𝗰𝗿𝗶𝗽𝗽𝗹𝗲 𝘃𝗶𝘁𝗮𝗹 𝗮𝗶𝗿𝗰𝗿𝗮𝗳𝘁 𝘀𝘆𝘀𝘁𝗲𝗺𝘀? Defence professionals: Ensure peak mission performance with the latest advancements in insulating systems! Our new article explores how these innovations are safeguarding Air Force assets & personnel. ◾Mitigating environmental hazards ️ ◾Combating electromagnetic interference ◾Enhancing operational efficiency 𝗥𝗲𝗮𝗱 𝗻𝗼𝘄 & 𝗴𝗮𝗶𝗻 𝘃𝗮𝗹𝘂𝗮𝗯𝗹𝗲 𝗶𝗻𝘀𝗶𝗴𝗵𝘁𝘀: https://lnkd.in/gaQXX9aD #airforcetechnology #insulationsystems #defenceinnovation #aviationtechnology #insulatingsystems #aviationsafety #InsulationTechnology #defenceindustry #airforceindustry #airforceoperations #defenceindustries

Rolls-Royce will be supplying the power for three future Miecznik-class frigates for the Polish Navy. Each of the Miecznik multipurpose frigates will be powered by four 20-cylinder mtu Series 8000 engines with four mtu Series 4000 marine gensets used for the on-board power supply.   The four main propulsion engines of the CODAD propulsion system can be used flexibly in different combinations, from single engine operation for slow patrols to high-speed operation at over 20 knots, while the four on-board power generators feed the electrical power grid for ship and mission operations.   “This order as part of our strategic initiative in the government business not only further consolidates our strong position in the market for propulsion systems for very fast ships. With these state-of-the-art systems, we are also supporting our NATO partner Poland, with whom we have a long-standing partnership,” says Paul Röck, Defence Sales Director for EMEA and Latin America at Rolls-Royce Power Systems.   #mtusolutions #marinengineering 

Arresting cables: Ensuring safe landings on aircraft carriers with precision and strength. An arresting cable is a crucial component in aviation, especially on aircraft carriers, used to rapidly decelerate landing aircraft. These high-tensile steel cables are stretched across the flight deck and are attached to a hydraulic or mechanical system below. When a plane lands, it deploys a tailhook that catches the cable, bringing the aircraft to a stop within a short distance, typically under 100 meters. This system is vital for safe landings on the limited runway space of a carrier. The arresting cable absorbs the aircraft’s kinetic energy, reducing the need for long runways. It is primarily used by military jets but can also be found at emergency landing strips for certain high-speed aircraft. videorights : Respective owners DM for removal /credits #arrestingcable #engineering #technology #civilengineering #civilconstruction #engenharia #engenhariacivil #engenheiro #engenheirocivil