first_imgBy Dialogo March 04, 2011 Good work… During a firefight, the last thing a machine gunner wants to do is stop fighting to change barrels, but that’s how it has always been done with standard, single steel-barrel machine guns. The reason for the barrel change is that at high temperatures barrels lose “strength properties,” according to engineers working on a promising alternative. One of the engineers is Vinny Leto, systems project engineer, of the Armament Research, Development and Engineering Center, or ARDEC, Weapons System Technology Directorate. During a test firing of a proof-of-concept barrel in December, Leto witnessed a measure of success with the High Performance Alloys for Weapons Applications Project. During testing, the first rifled, cobalt-alloy machine gun barrel ever produced using the “flow forming” process consistently reached high temperatures without degraded performance. The proof-of-concept barrel was made of an alloy that contains more than 50 percent of the metal cobalt. Cobalt alloys are erosion- and corrosion-resistant metals that are designed to retain high strength during long-term exposure to high temperatures. Cobalt alloys are frequently used in the aerospace industry, such as the hot-gas section of turbine engines, explained Leto. Cobalt alloys are also used as short liners for machine gun barrels. “If you look at steel in a machine gun environment, it gets very hot at a high rate of fire,” said Leto. “The benefit of the cobalt alloy is that it is designed to operate in high-temperature, high-stress environments. It has the added benefits of corrosion and erosion resistance.” While cobalt alloy barrel liners have been produced for years, it is very difficult with existing machining techniques to impart rifling. “The material, for all of its phenomenal properties, is very difficult to manufacture and machine,” said Leto. Different from machining, flow-forming is an advanced process used to manufacture precise cylindrical components. The process consists of high-pressure rollers exerting pressure on the exterior of a cylinder, pressing material against a rod-called a mandrel-on the interior of the cylinder. For this project, the flow-forming process was modified to produce the rifling in the barrel bore. More testing and data gathering will be required before engineers know if flow forming manufacturing can be achieved with the alloy. Success, however, would provide war fighters with three potential benefits: lightening their load, increasing barrel service life, and giving them a barrel that could operate at higher temperatures compared to a steel barrel, Leto said. Soldiers and Marines typically carry spare barrels into battle so that they have a cool barrel to exchange if they engage the enemy in a firefight, explained Leto. Having that strength at higher temperatures means that barrels may not need to be changed during a firefight, eliminating the need for the extra barrel and maintaining a steady stream of firepower. Engineering team members met all of their proof-of-concept test objectives when they fired more than 24,000 rounds and achieved an 1,100 degrees barrel temperature. Leto said the alloy barrel was fired from the ARDEC-designed Advanced Remote/Robotic Armament System. Steel begins to lose strength at approximately 1,000 degrees, Leto noted, and the test yielded data needed to assess and design the next round of improvements. The team is planning to produce another prototype that will be fired from a fielded infantry weapon later this year. Previously, the engineers had produced a half-length barrel as an initial demonstration of the flow-forming process before moving on to manufacturing full-length barrels. The Office of Naval Research assigned the engineers as principal investigators into the flow forming manufacturing technology. They are leveraging ARDEC’s expertise with metallurgy and small arms design and analysis. Prototype testing will be conducted here at the Armament Technology Facility, which is ARDEC’s small arms design and evaluation facility. Previously, the engineers had worked with the Office of Naval Research in development of lightweight 60mm and 81mm mortar tubes made with a nickel-based alloy. The team is also working with the Joint Services Small Arms Program, which is also based at Picatinny Arsenal. The JSSAP office oversees the day-to-day implementation of the plan by the joint services regarding the development and investment in small-arms technologies.last_img read more

first_imgBy Dialogo December 17, 2014 “The goal is to restore security conditions and reestablish the rule of law and peace in all the towns of this region,” Rubido told reporters. The Soldiers and PF agents will provide security to residents in areas which have seen an increase in violence as a result of battles between drug cartels and gangs. There, organized crime groups are fighting for control of lucrative drug smuggling routes. Colombia’s National Navy, Panama’s National Aeronaval Service (SENAN) and US Military troops partnered to seize 295 kilograms of cocaine and 288 kilograms of marijuana from a vessel in the Caribbean Sea on December 7. Mexican troops and Federal Police bolster security in Acapulco The Armed Forces of the three countries cooperated closely to make the seizures and arrests. Colombia’s Navy obtained intelligence about the suspicious vessel and alerted U.S. Armed Forces, which forwarded the information to SENAN. Colombia, Panama, and the United States have signed international cooperation agreements that allow them to exchange information to carry out interdictions of suspicious vessels. The goal of the federal government is to “establish permanent security conditions” so residents will “have the certainty that they will have the necessary guarantees to enjoy their time off” during the holiday season, according to Rubido. Colombia, Panama, and the United States have signed international cooperation agreements that allow them to exchange information to carry out interdictions of suspicious vessels. The Soldiers and PF agents will provide security to residents in areas which have seen an increase in violence as a result of battles between drug cartels and gangs. There, organized crime groups are fighting for control of lucrative drug smuggling routes. The goal of the federal government is to “establish permanent security conditions” so residents will “have the certainty that they will have the necessary guarantees to enjoy their time off” during the holiday season, according to Rubido. They also arrested two suspects, but military authorities did not immediately disclose their names. The drugs were bound for Central America, military officials suspect. Mexican Army troops and Federal Police (PF) assumed command of public safety last week in the Pacific Coast resort city of Acapulco, according National Security Commissioner Monte Alejandro Rubido. The Armed Forces of the three countries cooperated closely to make the seizures and arrests. Colombia’s Navy obtained intelligence about the suspicious vessel and alerted U.S. Armed Forces, which forwarded the information to SENAN. They also arrested two suspects, but military authorities did not immediately disclose their names. The drugs were bound for Central America, military officials suspect. President Enrique Peña Nieto’s administration has bolstered security in 36 towns in the Hot Land, a region known for drug trafficking activity that encompasses parts of the states of Guerrero, Michoacán, Morelos and Mexico, Rubido said, adding the forces will be under the Defense Ministry’s command. Mexican Army troops and Federal Police (PF) assumed command of public safety last week in the Pacific Coast resort city of Acapulco, according National Security Commissioner Monte Alejandro Rubido. Colombia’s National Navy, Panama’s National Aeronaval Service (SENAN) and US Military troops partnered to seize 295 kilograms of cocaine and 288 kilograms of marijuana from a vessel in the Caribbean Sea on December 7. President Enrique Peña Nieto’s administration has bolstered security in 36 towns in the Hot Land, a region known for drug trafficking activity that encompasses parts of the states of Guerrero, Michoacán, Morelos and Mexico, Rubido said, adding the forces will be under the Defense Ministry’s command. Mexican troops and Federal Police bolster security in Acapulco “The goal is to restore security conditions and reestablish the rule of law and peace in all the towns of this region,” Rubido told reporters.last_img read more

first_img For all the Latest Sports News News, Cricket News News, Download News Nation Android and iOS Mobile Apps. New Delhi: Indian great Yuvraj Singh, a destructive left-handed batsman and a handy left-arm spinner, on Monday brought down curtains on his cricket career and announced retirement from all formats of the game. Singh, the hero of India’s 2011 World Cup triumph, made the announcement in a press conference in Mumbai. As soon as he made the announcement, wishes poured in from his co-players from around the world. His former teammate Rohit Sharma also tweeted but unlike others, he apparently raised questions on the BCCI’s way of handling Yuvraj Singh’s retirement.In his tweet, Rohit said, “You don’t know what you got till its gone. Love you brotherman You deserved a better send off.” Yuvraj Singh too responded to Rohit’s tweet. “You know how I feel inside! Love u brothaman you go be a legend.” Yuvraj Singh said in his reply to Rohit Sharma’s tweet.During his press conference, Yuvraj Singh did speak about not getting a farewell match. Singh revealed that the Board of Control for Cricket in India (BCCI) had told him that if he failed the Yo Yo fitness test, he would be given a farewell match. However, he passed the test and never got a farewell match.”I was told that if you are not able to pass the ‘Yo-Yo’ test, I would get a farewell game. I did not tell anyone in BCCI that I have to play the last match. Agar main accha tha, potential tha toh main ground pe se chale jaata. (If I was good enough, I would have retired from the ground). Aur mujhe is tarha ki cricket khelna pasand nahi hai, ki mujhe ek match chahiye (I don’t like to ask for a game, I have never played the game with that mindset),” Yuvraj said during the press conference.”Toh maine us time bola ki mujhe retirement match nahi chahiye, ‘Yo-Yo’ test pass nahi hoga toh main chup chhap ghar chale jayunga… ‘Yo-Yo’ test pass kiya and then rest is not my call (Then i said i don’t need retirement match, if i don’t pass the Yo-Yo test, i would go home…. i passed the test and then rest is not my call),” he said.Yuvraj Singh made his international debut for India in 2000. During his 19-year-old career, he played 304 ODIs for India and scored 8,701 runs at an average of 36.55. In the 58 T20I matches he played for the country, Yuvraj Singh scored 1,177 runs at an average of 28.02. In Tests, Yuvraj could not perform up to his potential, and scored just 1900 runs in 40 matches he played. His last appearance in the blue jersey came in an ODI against West Indies in 2017. last_img read more

first_img Facebook Twitter Google+ CHARLOTTESVILLE, Va. — His goal was only to hit the rim. Maybe get a rebound, another chance. Buddy Boeheim caught the ball near half-court with just three seconds to make a play. Syracuse’s lead that always seemed in reach would be one stop closer to evaporating. The ball trickled into his hands with hopes of salvaging a lost possession. Buddy did all he could. He turned, located the rim, and launched the ball as high as possible.The ball floated down out of the sky, and across the court, Joe Girard III got a “weird feeling.” Boeheim, vacated from his bench seat, didn’t think it had a chance but was glad his team had used the duration of the shot clock. Yet as it neared nylon, Buddy thought it was on line. “Man…” Buddy said after the SU win. “Craziest shot I’ve ever hit.”Nothing had changed for the Orange: No team meetings, dinners or groundbreaking game-plans. Tony Bennett said Syracuse’s (9-7, 2-3 Atlantic Coast) shocking surge and eventual 63-55 overtime win over No. 18 Virginia (11-4, 3-2) wasn’t a fluke, yet Boeheim couldn’t hold a smile off his face postgame. SU earned its first NET-100 win of the season against an opponent that embarrassed it on opening night, limiting the Orange to the fewest points in the 44-year Boeheim era. The Orange’s 20-point five-minute period was more than they scored in the first half of their season-opener against the Cavaliers and more than the second half of Saturday’s game.  AdvertisementThis is placeholder textwww.instagram.com/p/B7MzxrnprPD/?utm_source=ig_embed&utm_campaign=loading” data-instgrm-version=”12″> Boeheim insisted after the season-opener that the UVA defense would be the best SU would play until they met again. Saturday, it was until, in seemingly an instant, it wasn’t. Syracuse shot just 25.9% from the field across the first 40 minutes, but scorched the answerless Cavaliers with an 85.7% clip on seven shots in the added minutes.“This one felt great,” Girard said. “You’re a lot happier when you win games. It’s as simple as that.”Offense eluded the early part of the game. Back-and-forth baskets masked the futility of each offense as the matchup brought one missed opportunity after another. Defensive stops followed misses on the other end. In the Orange’s first game of the season, a 48-34 loss to the Cavaliers in the Carrier Dome, offense was similarly scarce and recent inefficiency from both teams promised — warned, really — of much of the same.Kihei Clark struck an early 3-pointer but few more would follow. The game went through countless scoring stretches as strong defense salvaged a game heading towards offensive disaster. The Cavaliers turned the ball over six times in the first six minutes, and SU somehow surprised by simply playing cleaner. The Orange went to the break with a four-point lead, Elijah Hughes skied for a highlight dunk and the Orange’s lead only grew. Virginia hadn’t shown any firepower at all.But, suddenly, it shifted. A poor-shooting Virginia team hit three-straight 3-pointers to cut SU’s lead to one. A Jay Huff turnaround hook shot gave Virginia the lead. Down three points, Bourama Sidibe flashed inside toward a ball that bounced off his hands towards the sideline. Sidibe tracked down the ball, only to cough his save into the hands of Kihei Clark, who finished at the other end of the court with a layup.As Virginia’s bench jumped, holding its largest lead of the game, Sidibe walked off the court with his head down. Girard put his arm around Sidibe’s back and gave him a nudge.“We could have easily folded and gave them this game,” Buddy said. “No one thought we were going to win this game… We got a lot of fight left in us.”For a while, teams traded free throws for twos. Syracuse started to hit its mark from beyond the arc: Girard drained a faceup long-ball, Hughes pulled up off the catch and Buddy nailed one more from the corner.Two free throws from Clark knotted the game at 43. A possession each came up empty, and five more minutes remained on the clock. Diakite hit a tough layup to start the overtime period, but five SU 3-pointers on six tries ensued. Hughes, then Girard, then Buddy. Huff worked down low with the Cavaliers down five, but Hughes poked the ball loose. The Orange worked the ball around, and when shot clock wound, Buddy hoisted his prayer and Girard pulled up to add another. Girard turned to the SU bench and ripped his hand in a cutting motion across his neck. A win for Syracuse is less of the performance that keeps its tournament window cracked open and more a pebble pelted at one already closed. Enough blows — repeated wins over opponents perceived far superior — and the Orange could possibly break through, shattering the unflattering expectations it’s built. In their remaining 15 games, the Orange need so much more. Yet Saturday, Syracuse got an offensive explosion that’s been so hard to come by, at a time when it seemed impossible. After the shot that solidified the win, Buddy opened up his palms by his sides and smirked. It was a feeling in part of disbelief. A low-percentage shot clinched a win that had hardly any probability. Boeheim said it was “lucky.”“But that’s 0kay,” Boeheim said. “Sometimes you need to get a little bit lucky.” Comments Published on January 11, 2020 at 6:32 pm Contact Michael: [email protected] | @MikeJMcCleary View this post on InstagramShooters shoot ‍♂️A post shared by Buddy Boeheim (@buddy_boeheim) on Jan 11, 2020 at 4:51pm PSTlast_img read more