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Tag: tests

'Urban island' heat tests Phoenix, other large cities

'Urban island' heat tests Phoenix, other large cities

Technology
When temperatures soar as they have this week in downtown Phoenix, homeless people ride the air-conditioned light rail to avoid a heat so brutal it killed 155 people in the city and surrounding areas last year. An occasional siren wails as paramedics rush to help people sick from the heat. Already devilishly hot for being in the Sonoran desert, Arizona's largest city is also an "urban heat island," a phenomenon that pushes up temperatures in areas covered in heat-retaining asphalt and concrete. Phoenix on Wednesday recorded a sweltering 116 degrees (46 Celsius), setting a new high for the date. Phoenix officials say they are tackling urban warming, monitoring downtown temperatures, planting thousands of trees and capturing rainwater to cool off public spaces. Elsewhere, Chicago maintains...
KC-46 tanker aircraft completes flight tests ahead of first delivery

KC-46 tanker aircraft completes flight tests ahead of first delivery

Business
July 13 (UPI) -- The KC-46 Pegasus has successfully completed its final flight tests, setting the stage for delivery of the first aircraft to the U.S. Air Force in late October. The joint Boeing and Air Force team tested the Remote Vision System and completed tanker aircraft refueling certifications for the F-16 Fighting Falcon and C-17 Globemaster III, the Air Force announced Friday. The testing also included the KC-46 being refueled by the current KC-135 Stratotanker, which fulfills minimum qualifications for delivery of the aircraft. "With this milestone complete, the test program has demonstrated a level of maturity that positions Boeing to deliver, and the Air Force to accept, an aircraft by the end of October 2018," Air Force service acquisition executive Dr. Will Roper said in a p...
Fire Scout unmanned helicopter finishes first flight tests from LCS

Fire Scout unmanned helicopter finishes first flight tests from LCS

Business
July 9 (UPI) -- A MQ-8C Fire Scout unmanned helicopter finished its Initial Operational Test and Evaluation from the littoral combat ship USS Coronado, U.S. Navy officials said. The crew of the Coronado and Air Test and Evaluation Squadron 1, or VX-1, conducted combat simulations to evaluate the Fire Scout on target identification, intelligence and surface warfare, the results of which will help the Navy decide how best to use the rotorcraft. "The results, lessons learned, and recommendations reported on following this underway test period are absolutely invaluable to the future of the MQ-8C Fire Scout's mission effectiveness and suitability to perform that mission," Lt. Cmdr. Seth Ervin, the lead for the VX-1 unit on Coronado, said in a press release. The VX-1 is the test unit for the F...
YouTube stars' fury over algorithm tests

YouTube stars' fury over algorithm tests

Technology
Some of YouTube's most popular stars have criticised the website for "experimenting" with how their videos are delivered to their fans.Unannounced, YouTube started testing an algorithm that changed the order videos appeared in users' subscription feeds.The experiment came to light when some users complained on social media.One YouTube star said it was the worst decision the website had made for years. But YouTube defended its experiment.What's the issue?Originally, the YouTube subscription feed was a chronological list of videos from all the channels that a person had chosen to "subscribe" to. The system let people curate a personalised feed full of content from their favourite video-makers.However, many video-makers have previously complained that some ...
North Korea: No need for more missile tests

North Korea: No need for more missile tests

World
North Korean leader Kim Jong-un has said the country will suspend all missile tests and shut down a nuclear test site, state media say."From April 21, North Korea will stop nuclear tests and launches of intercontinental ballistic missiles," the Korean Central News Agency said, as quoted by South Korea's Yonhap agency.The decision came after a meeting of the ruling Worker's Party of Korea.North Korea has defied international sanctions over its weapons programme.This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version.You can receive Breaking News on a smartphone or tablet via the BBC News App. You can also follow @BBCBreaking on Twitter to get the latest alerts.Let's block ads! (Why?) BBC News - World