Minnesota prison put on lockdown after about 100 inmates refuse to return to their cells_我的网站
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Stillwater Prison still on lockdown, but crisis resolved after 100-plus inmates refused to go back t
Stillwater Prison still on lockdown, but crisis resolved after inmates refused to go back to cells02:20The Minnesota Department of Corrections says an emergency situation at a state prison has been resolved after roughly 100 inmates in one living unit refused to return to their cells Sunday morning. Inmates, however, could remain on lockdown through Tuesday.Police, firefighters and other emergency teams rushed to the Stillwater prison after it was placed on emergency lockdown at about 8 a.m. local time, the department said. The prison is located in the city of Bayport, about 25 miles east of Minneapolis. All staff were removed from the common areas of the unit that was taken over, and two correctional officers remained in the unit's secure control area, staying "in constant communication with facility command personnel during the incident." Department spokesperson Andy Skoogman said no one was hurt, and "the situation was calm, peaceful and stable throughout the day."
"The majority of the time the incarcerated men who did not return to their cells were at tables that are in the commons area playing cards, talking with one another. There was never any type of violence throughout the incident at all," Paul Schnell, Department of Corrections commissioner, said in a Sunday afternoon news conference. The majority of inmates in the unit, which is between 220 and 250 men, had returned to their cells when originally ordered, Schnell alleged.He said the situation ended at about 3 p.m., when only two inmates were left refusing to go back to their cells. The two were brought to a segregated unit, and will go through a disciplinary process. WCCO Skoogman blamed the unrest, in part, on inmates' frustration with a decision to change cell release schedules during Labor Day weekend, which limited the inmates' access to phones, recreation and showers. Skoogman said that change was due to "staffing challenges." He also refuted a claim that inmates lacked access to clean water.
Inmates are usually given several hours a day during the weekend for recreation, Schnell said, but the holiday-related staff shortage dropped that amount of time to just a single hour. Overall, free time has been cut down by more than half for inmates amid the current staffing issues, he added, disclosing that the prison is short about 50 officers. "The more staff we have, the more we can open up programming, which is exactly what the concerns of incarcerated people are," Schnell said. In a statement Sunday afternoon, AFSCME Council 5, which represents Minnesota correctional officers, said that understaffing was to blame for the incident. Schnell said the 120-year-old facility is not climate controlled and its windows "have many challenges." He added that the department is doing studies to determine how to update the facility, and he expects that a bonding request will eventually be submitted to the Minnesota Legislature.In total, about 1,200 inmates are at the facility just southeast of Stillwater, according to department records. "Grateful the incident at Stillwater Prison has been resolved and no one was injured," Minnesota Gov. Tim Walz posted on social media. It was a day of uncertainty for Marvina Haynes, who was unable to communicate with her brother, Marvin.
"It's been very emotional, very terrifying," Haynes said.She alleged the men were protesting their movement being restricted. She also said their access to clean drinking water in the hot prison has been limited."The jail told us that everything ended peacefully, but we're not sure of that because we still haven't had the opportunity to speak with anyone from the prison," she said.In 2018, the facility was the site of an officer's murder. Officer Joseph Gomm was beaten to death with a hammer by inmate Edward Johnson.
B | 10月19日消息，近日，蓝箭航天“天鹊”真空型液氧甲烷发动机（ TQ-15A）在湖州成功完成了首次全系统热试车，试验时长20秒，试验过程中发动机起动关机正常、工作平稳。据介绍，TQ-15A为目前国内推力最大的真空型液氧甲烷发动机，真空推力达836千牛，是朱雀二号火箭第二批次的二级主发动机。与现有80吨+10吨的二级发动机布局方案相比，取消了游动发动机TQ-11，主发动机由不摇摆改为泵前摆，降低了二级发动机系统复杂度，总重量减轻约400千克，推力室进一步增大喷管面积比，并将涡轮排气引入推力室大喷管进行冷却，解决了涡轮排气引起的干扰力问题。
C | TQ-15A发动机真空推力提高9%、真空比冲提高130米/秒，推力调节范围拓宽至55%~110%且具备三次起动能力，可大幅提升火箭发射任务的适应性。本台TQ-15A发动机为带伺服机构不带大喷管状态，本次试车重点考核发动机系统、总装和各组合件改进方案的可行性，验证起动关机时序的正确性，获得发动机的实测性能数据及工作特性，发动机按预定程序起动和关机、工作平稳，达到了预期设计目标。本轮试车计划开展5次试车（含两次多次起动）、累计试车时间970秒，首次试车结束后将继续考核发动机长程工作可靠性、大范围推力调节时的工作适应性、发动机与伺服系统的工作协调性，多次起动、高低入口压力及过冷推进剂等各种条件下的发动机的工作适应性，全面验证发动机设计方案，并获得大喷管条件下发动机的性能数据。朱雀二号运载火箭自2017年9月立项至今，已完成了第一批次火箭技术状态的研发工作。目前，朱雀二号Y1火箭已出厂并完成低温加注合练，Y2火箭的总装工作正在嘉兴蓝箭航天中心进行。在此基础上，公司研发团队对第二批次火箭进行了研制迭代和优化改进，使之具备更优的性能和更高的可靠性。
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