Why Navy Aircraft Carriers Might Be Unsinkable
With the conclusion of the Cold War, U-2Rs and TR-1s were converted to a new model designated the U-2S, thirty-one of which remain in service today. The U-2S has a more powerful F118 engine boosting speed to over five hundred miles per hour, as well as improved sensors and a GPS system. In 2012 the aircraft were further modified under the CARE program to have lower cabin pressure and and cleaner urine collection to make flying them more tolerable for the pilots.
The SR-71’s JP-7 fuel—which also had to be carried onboard specialized KC-135Q tankers to refuel the Blackbird—was designed to be a safe, high-flashpoint fuel that would not vaporize or blow up under extreme heat and pressure. It had such low volatility that one could supposedly extinguish a match in a puddle of JP-7. But that also meant that the fuel was difficult to ignite using the convention systems, which meant Lockheed had to develop a triethylborane-based chemical ignition system for the SR-71’s engines—adding to the jet’s complexity and maintenance costs.
Today all four Iowa-class battleships are scattered across the United States serving as floating museum ships. New technologies such as lasers and railguns will almost certainly spark a new wave of calls for reintroducing the ships with 21st Century technologies. While unlikely in the current fiscal environment, such a possibility shouldn’t be completely ruled out. The Iowa class keeps coming back, and still may yet again.
South Korean police had better not plan on getting much rest during the upcoming Winter Olympics: The country will deploy 10,000 police officers, backed up with the highest technology, to protect the Games, the Korean National Police (KNP) announced on Tuesday.
Special measures are being emplaced to prevent all forms of terrorism, to handle traffic and to manage the highly anticipated visit of a large North Korean delegation, the senior police official overseeing the Winter Olympics, which take place from February 9-25, explained in a briefing to foreign reporters in Seoul.